WO2002002228A1 - Spherical catalyst support material and a process for producing it - Google Patents
Spherical catalyst support material and a process for producing it Download PDFInfo
- Publication number
- WO2002002228A1 WO2002002228A1 PCT/EP2001/007832 EP0107832W WO0202228A1 WO 2002002228 A1 WO2002002228 A1 WO 2002002228A1 EP 0107832 W EP0107832 W EP 0107832W WO 0202228 A1 WO0202228 A1 WO 0202228A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- support material
- hydrotalcite
- producing
- catalyst support
- weight
- Prior art date
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 37
- 239000000463 material Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910001701 hydrotalcite Inorganic materials 0.000 claims abstract description 18
- 229960001545 hydrotalcite Drugs 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 229910001868 water Inorganic materials 0.000 claims abstract description 8
- 239000002253 acid Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 5
- 239000011707 mineral Substances 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims abstract description 4
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims abstract 5
- 150000001875 compounds Chemical class 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000011777 magnesium Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 4
- -1 copper halides Chemical class 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 229910017604 nitric acid Inorganic materials 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 239000011591 potassium Substances 0.000 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- 150000004820 halides Chemical class 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims 2
- 229910052783 alkali metal Inorganic materials 0.000 claims 1
- 229910001508 alkali metal halide Inorganic materials 0.000 claims 1
- 150000008045 alkali metal halides Chemical class 0.000 claims 1
- 150000001340 alkali metals Chemical class 0.000 claims 1
- 238000001694 spray drying Methods 0.000 abstract description 5
- PWZFXELTLAQOKC-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide;tetrahydrate Chemical compound O.O.O.O.[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O PWZFXELTLAQOKC-UHFFFAOYSA-A 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- 238000005470 impregnation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000012798 spherical particle Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 1
- GANNOFFDYMSBSZ-UHFFFAOYSA-N [AlH3].[Mg] Chemical compound [AlH3].[Mg] GANNOFFDYMSBSZ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000001339 alkali metal compounds Chemical class 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- WMWXXXSCZVGQAR-UHFFFAOYSA-N dialuminum;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3] WMWXXXSCZVGQAR-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 229910001679 gibbsite Inorganic materials 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000003112 potassium compounds Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001226 reprecipitation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 150000004684 trihydrates Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/15—Preparation of halogenated hydrocarbons by replacement by halogens with oxygen as auxiliary reagent, e.g. oxychlorination
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/005—Spinels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/007—Mixed salts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/06—Halogens; Compounds thereof
- B01J27/08—Halides
- B01J27/122—Halides of copper
-
- B01J35/51—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0027—Powdering
- B01J37/0045—Drying a slurry, e.g. spray drying
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/15—Preparation of halogenated hydrocarbons by replacement by halogens with oxygen as auxiliary reagent, e.g. oxychlorination
- C07C17/152—Preparation of halogenated hydrocarbons by replacement by halogens with oxygen as auxiliary reagent, e.g. oxychlorination of hydrocarbons
- C07C17/156—Preparation of halogenated hydrocarbons by replacement by halogens with oxygen as auxiliary reagent, e.g. oxychlorination of hydrocarbons of unsaturated hydrocarbons
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention realtes to a spherical catalyst support material comprising alumina hydrate, produced from bauxite, and from 1 to 25 % (based on the total solids content) of hydrotalcite. According to the invention, a mixture of alumina hydrate, hydrotalcite, water and mineral acid is prepared. This mixture is subjected to spray drying and subsequently heat treated. The catalyst support material is particularly suitable for producing oxychlorination catalysts.
Description
Spherical catalyst support material and a process for producing it
Description
The invention relates to a spherical catalyst support material r a process for producing the spherical catalyst support material and its use as oxychlorination catalyst.
Catalyst support material comprising or consisting of activated aluminium oxide is known.
DE 21 25 625 discloses a process for preparing pseudoboehmite-like alumina which, owing to its large surface area, the high pore volume and the pore size, is suitable as support material for catalysts from bauxite. A disadvantage of this production process is that the product formed is not spherical.
It is likewise known that highly pure alumina hydrates can be prepared by hydrolysis of aluminium alkoxides, with metallic aluminium being used for preparing the alkoxides . • This material can be converted into a spherical form by spray drying.
It is an object of the invention to provide a catalyst support material based on alumina hydrate (Al203 • H20) which has a regular spherical structure starting from bauxite .
According to the invention, a suspension of alumina hydrate, hydrotalcite, water and mineral acid is firstly prepared by intensive stirring in order to' produce the support material .
For the purposes of the invention, alumina hydrate is an aluminium oxide obtained from bauxite, e.g. by dissolution of alumina trihydrate, e.g. hydrargillite,
and reprecipitation with acids, as described in the LaRoche process in DE-A 21 25 625.
In one embodiment, Versal 700 from LaRoche was used as alumina hydrate .
For the purposes of the invention, hydrotalcite is a magnesium-aluminium double compound in which the proportions of magnesium and aluminium oxides, hydroxides and/or carbonates can fluctuate . The hydrotalcite used according to the invention is a sparingly soluble compound.
In one embodiment of the invention, a hydrotalcite from LaRoche was used.
Physical data of the hydrotalcite:
LOI (1000°C) 43.2% Specific surface area 228 m2/g
(calcined at 550°C, 1 hour)
The proportion of hydrotalcite in the suspension is, based on the total solids content, from 1 to 25% by weight, preferably from 1 to 10% by weight, in particular from 1.3 to 3% by weight.
As mineral acid, it is possible to use nitric acid, sulfuric acid or hydrochloric acid, but preference is given to using nitric acid since it leaves behind no interfering decomposition products .
The suspension of alumina hydrate, hydrotalcite, water and mineral acid is spray dried and heat treated in a manner known per se .
To obtain a narrow particle size distribution of the dried support material, it is advantageous to subject the mixture to milling prior to spray drying. This
increases the proportion of fine particles in the mixture .
In one embodiment of the invention, a bead mill or a colloid mill was used.
Spray drying is carried out in a manner known per se .
The temperature of the gas, preferably hot air, used for drying and introduced into the dryer is from 500 to 600°C. The temperature of the vapour leaving the dryer is from 100 to 170°C.
The ' spherical particles formed are after-dried for a period of about 18 hours, e.g. in a drying oven at 150°C, and subsequently heat treated at about 600°C for a period of about 6 hours .
The spherical support material produced in this way has an average pore volume after calcination of from 0.5 to 0.8 ml/g, in particular from 0.5 to 0.6 ml/g.
A specific surface area of from 150 to 200 m2/g, in particular from 150 to 180 m2/g, was measured.
The particle size of the support material has the following distribution:
> 90 μ 0 - 10% by weight
60 - 90 μ 15 - 25% by weight
45 - 60 μ 15 -40% by weight
20 - 45 μ 15 -40% by weight < 20 μ 0 - 6% by weight.
The surface areas and the pore volume were determined by the standard BET (Brunauer-Emmett-Teller) method using nitrogen.
The spherical material produced according to the invention is particularly suitable as catalyst support for oxychlorination catalysts.
It has surprisingly been found that the addition of hydrotalcite ensures that spherical particles are formed. Furthermore, the properties of the resulting catalyst can be controlled or influenced by the amount of hydrotalcite in the support material . To produced a catalyst, the spherical material is .impregnated with the catalytically active metal compounds. Impregnation of the support material is carried out in a manner known per se .
In a preferred embodiment, impregnation of the support material is carried out by a method analogous to those described in EP-0 657 212 and EP-0 494 474.
In one embodiment, the support material is impregnated with a solution of the catalytically active compounds by dissolving, for example, copper, magnesium and alkali metal compounds, in particular lithium, sodium or potassium compounds and/or mixtures thereof, preferably the corresponding halides, in water at about 70 °C and mixing the support material with the warm solution in a kneader. After kneading, the supported catalyst is dried at about 170 °C for a period of about 48 hours .
The composition of the catalytically active compounds is chosen so that the supported catalyst has a copper content of from 30 to 90 g/kg (based on the total weight) and the other metal salts, namely the metal salts applied by impregnation, are present in an atom ratio Cu:Mg:Li:K and/or sodium of 1:0.1-1.5:0.01-1.0:0.001-0.8.
In a preferred embodiment, the supported catalyst applied by impregnation contains:
62 g/kg of copper
17 g/kg of magnesium
1.7 g/kg of lithium
12 g/kg of potassium.
The pore volume of this preferred supported catalyst is 0.24 cm2/g and the specific surface area (BET) is 113 m2/g.
It has surprisingly been found that the supported catalysts have a high abrasion resistance and a low erosive action. The catalyst particles themselves have a low tendency to stick together. Furthermore, it has been observed that the catalyst particles form virtually no caked material on the walls of the reactor or on the heat exchanger tubes. In addition, it has been found that varying the hydrotalcite content of the support material makes it possible to control the activity and selectivity of the catalyst. Thus, the selectivity of the catalyst can be increased by increasing the hydrotalcite content, but this simul- taneously reduces its activity. When used, for example, as oxychlorination catalyst for converting ethylene into dichloroethane, the catalyst displays a high selectivity and activity for the formation of 1,2- dichloroethane and a small tendency to form C02 when the proportion of hydrotalcite is about 10% by weight.
It has been found that the support material remains stable under oxychlorination conditions.
The invention is illustrated but not restricted by the following examples.
Examples
Example 1 :
Production of the support material
20 kg of aluminium oxide monohydrate (Versal 700, LaRoche) , 5 kg of hydrotalcite (HTC, LaRoche) and
2.1 kg of nitric acid were admixed with 75 kg of water and mixed .intensively by stirring. The slurry formed was milled in a bead mill to increase the proportion of fine particles and subsequently spray dried.
Spray drying condi ions:
Nozzle: Schlick 121
Nozzle orifice: 0.35 mm
Spray angle: 15°
Pressure: 15 bar
T mperature of drying gas:
Inlet: 530°C
Outlet: 100°C
The spherical particles were after-dried at 150°C in a drying oven for 18 hours and subsequently heat treated at 600°C for 6 hours.
Examples 2 and 3 :
Production of the support material
Support material was produced by a method analogous to Example 1 but with the amount of starting materials being varied.
Table 1 : Support production
Table 2 : Support properties
Example 4 ;
Production of the catalyst
4,500 g of support material from Example 1, 2 or 3 was in each case placed in a kneader. In a separate vessel,
1,038.40 g of CuCl2-2H20 (95 pure)
871.59 g of MgCl2-6H20
65.47 g of LiCl
142.33 g of KC1
850 g of H20
were mixed with one another and dissolved at 70°C.
The mixture was intensively kneaded and the free- flowing powder was then dried at 170 °C in a drying oven for 48 hours.
The catalyst is strongly hydroscopic and therefore has to be stored in a closed container.
Example 5 :
Oxychlorination
To demonstrate the catalytic activity of the supported catalyst, the oxychlorination of ethylene.to form 1,2- dichloroethane was carried out in a small laboratory reactor using the catalysts produced as described in Example 4.
Amount of catalyst: 565 ml
Temperature : 245 °C
Pressure : 5 . 8 atmospheres
Residence time: 10 seconds
Molar ratio: C2H4/2HC1 = 1 . 1- Molar ratio: C2H4/02 is controlled so that
1% by volume of 02 is always present in the off -gas .
Result :
Catalyst containing support as described in Example 2
Selectivity: 97.7 mol?
HC1 conversion: 99.8%
Claims
1. Spherical catalyst support material based on alumina hydrate produced from bauxite, characterized in that it contains from 1 to 25% by weight (based on total solids content) of hydrotalcite.
2. Spherical catalyst support material according to Claim 1, characterized in that it contains (based on total solids content) from 1 to 10% by weight, preferably from 1.3 to 3% by weight, of hydrotalcite .
3. Process for producing the catalyst support material according to Claim 1 or 2, characterized in that
a) alumina hydrate, hydrotalcite, water and mineral acid, preferably nitric acid, are intensively mixed, b) the mixture is milled if desired, c) the mixture, is spray dried and d) the supported particles are heat treated.
4. Use of the support material according to any of Claims 1 to 2 for producing oxychlorination catalysts by depositing halides of copper, magnesium and of alkali metals, preferably of lithium, sodium, potassium, and/or mixtures thereof as catalytically active compounds on the support .
5. Use of the support material according to any of Claims 1 to 2 for producing oxychlorination catalysts by depositing copper halides and alkali metal halides, preferably lithium, sodium, potassium halides, and/or mixtures thereof as catalytically active compounds on the support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2001279723A AU2001279723A1 (en) | 2000-07-06 | 2001-07-06 | Spherical catalyst support material and a process for producing it |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10032974A DE10032974A1 (en) | 2000-07-06 | 2000-07-06 | Spherical catalyst support material and a process for its production |
| DE10032974.8 | 2000-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2002002228A1 true WO2002002228A1 (en) | 2002-01-10 |
Family
ID=7648075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2001/007832 WO2002002228A1 (en) | 2000-07-06 | 2001-07-06 | Spherical catalyst support material and a process for producing it |
Country Status (4)
| Country | Link |
|---|---|
| AR (1) | AR028790A1 (en) |
| AU (1) | AU2001279723A1 (en) |
| DE (1) | DE10032974A1 (en) |
| WO (1) | WO2002002228A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3083286B1 (en) | 2018-06-27 | 2022-02-11 | Faurecia Systemes Dechappement | VALVE PROVIDED WITH A STABILIZATION MECHANISM FIXED TO THE FLAP AND EXHAUST LINE EQUIPPED WITH SUCH A VALVE |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4656156A (en) * | 1986-01-21 | 1987-04-07 | Aluminum Company Of America | Adsorbent and substrate products and method of producing same |
| EP0278535A1 (en) * | 1987-01-13 | 1988-08-17 | Akzo N.V. | Catalyst composition and absorbent which contain an anionic clay |
| US5098878A (en) * | 1989-12-15 | 1992-03-24 | Vulcan Materials Company | Oxychlorination catalyst compositions and process of making same |
| EP0557764A1 (en) * | 1992-02-28 | 1993-09-01 | Aristech Chemical Corporation | Process for making anionic clay catalysts, catalysts made thereby, and method of making isophorone |
-
2000
- 2000-07-06 DE DE10032974A patent/DE10032974A1/en not_active Withdrawn
-
2001
- 2001-07-05 AR ARP010103215A patent/AR028790A1/en unknown
- 2001-07-06 AU AU2001279723A patent/AU2001279723A1/en not_active Abandoned
- 2001-07-06 WO PCT/EP2001/007832 patent/WO2002002228A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4656156A (en) * | 1986-01-21 | 1987-04-07 | Aluminum Company Of America | Adsorbent and substrate products and method of producing same |
| EP0278535A1 (en) * | 1987-01-13 | 1988-08-17 | Akzo N.V. | Catalyst composition and absorbent which contain an anionic clay |
| US5098878A (en) * | 1989-12-15 | 1992-03-24 | Vulcan Materials Company | Oxychlorination catalyst compositions and process of making same |
| EP0557764A1 (en) * | 1992-02-28 | 1993-09-01 | Aristech Chemical Corporation | Process for making anionic clay catalysts, catalysts made thereby, and method of making isophorone |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2001279723A1 (en) | 2002-01-14 |
| AR028790A1 (en) | 2003-05-21 |
| DE10032974A1 (en) | 2002-01-17 |
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