EP0036703A2
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EP
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Preparation of metal containing catalysts
Assignee: Mobil Oil AS
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Filing: 1981-02-05
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Granted: —
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Expires: 2001-02-05
Abstract
Abstract Methods of preparing supported multimetallic and unimetallic catalysts of improved activity having uniform metals distribution are provided. Such methods involve saturating the catalyst support with carbon dioxide prior to impregnation with the desired metal or metals. Multimetallic catalysts encompassed by the invention comprise a platinum group metal with one or more metals from Groups VillA, VIIA and IVB of the Periodic Chart. Unimetallic catalysts embraced by the invention comprise a metal selected from ruthenium, rhodium, palladium, osmium, iridium, manganese, technetium and rhenium.
Inventors
- 👤 Charles Theodore Kresge
- 👤 Arthur Warren Chester
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 13:25
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/02; B01J37/0201; B01J37/0207; B01J23/00; B01J23/16; B01J23/32; B01J23/38; B01J23/40; B01J23/54; B01J23/56; B01J23/62; B01J23/622; B01J23/64; B01J23/656; B01J23/70; B01J23/89; C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
73 words
Process for preparing multimetallic catalyst composites comprising a platinum group metal and one or more metals from Groups VIIIA, VIIA and IVB of the Periodic Chart of the Elements on a common support, which comprises contacting the support with gaseous carbon dioxide in an amount and for a period of time sufficient to substantially saturate the support with carbon dioxide, thereafter impregnating the support with the desired metals and calcining the resulting composite.
Claim 2
Dependent Claim
73 words
Process for preparing multimetallic catalyst composites comprising a platinum group metal and one or more metals from Groups VIIIA, VIIA and IVB of the Periodic Chart of the Elements on a common support, which comprises contacting the support with gaseous carbon dioxide in an amount and for a period of time sufficient to substantially saturate the support with carbon dioxide, thereafter impregnating the support with the desired metals and calcining the resulting composite.
Claim 3
Dependent Claim
20 words
The process of claim 1 wherein the platinum group metal is selected from ruthenium, rhodium, palladium, osmium, iridium and platinum.
Claim 4
Dependent Claim
26 words
The process of of claim 1 or 2 wherein the Group VIIIA metal is selected from iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium and platinum.
Claim 5
Dependent Claim
22 words
The process of any one of claims 1 to 3 wherein the Group YIIA metal is selected from manganese, technetium and rhenium.
Claim 6
Dependent Claim
22 words
The process of any one of claims 1 to 4 wherein the Group IVB metal is selected from germanium, tin and lead.
Claim 7
Dependent Claim
17 words
The process of any one of claims 1 to 5 wherein the catalyst comprises platinum and rhenium.
Claim 8
Dependent Claim
24 words
The process of claim 6 wherein the impregnation is effected by utilizing an aqueous solution of H 2 PtCl 6 and HReO 4 .
Claim 9
Dependent Claim
34 words
The process of any one of claims 1 to 7 wherein each metal in the resulting composite is present in an amount of from 0.05 to 5.0 weight percent based on total catalyst weight.
Claim 10
Dependent Claim
63 words
Process of preparing unimetallic catalyst composites comprising a metal selected from ruthenium, rhodium, palladium, osmium, iridium, manganese, technetium and rhenium on a support, which comprises contacting the support with gaseous carbon dioxide in an amount and for a period of time sufficient to substantially saturate the support with carbon dioxide, thereafter impregnating the support with the desired metal and calcining the resulting composite.
Claim 11
Dependent Claim
63 words
Process of preparing unimetallic catalyst composites comprising a metal selected from ruthenium, rhodium, palladium, osmium, iridium, manganese, technetium and rhenium on a support, which comprises contacting the support with gaseous carbon dioxide in an amount and for a period of time sufficient to substantially saturate the support with carbon dioxide, thereafter impregnating the support with the desired metal and calcining the resulting composite.
Claim 12
Dependent Claim
29 words
The process of claim 9 wherein the metal in the resulting composite is present in an amount of from 0.05 to 5.0 weight percent based on total catalyst weight.
Claim 13
Dependent Claim
15 words
The process of any one of claims 1 to 10 wherein the support is alumina.
Claim 14
Dependent Claim
11 words
The process of claim 11 wherein the support is gamma alumina.
Claim 15
Dependent Claim
19 words
The process of claim 11 or 12 wherein the alumina has a surface area exceeding 20 m 2 /g.
Claim 16
Dependent Claim
17 words
The process of claim 13 wherein the alumina has a surface area exceeding 100 m 2 /g.
Claim 17
Dependent Claim
30 words
The process of any one of claims 1 to 14 wherein the support is contacted with carbon dioxide at room temperature, at a pressure of from 0 to 50 psig.
Claim 18
Dependent Claim
29 words
The process of any one of claims 1 to 15 wherein the support is contacted with carbon dioxide for a period of time from one minute to 48 hours.
Claim 19
Dependent Claim
17 words
The process of claim 16 wherein the period of time is from one minute to three hours.
Claim 20
Dependent Claim
16 words
The process of any one of claims 1 to 17 wherein the catalyst further comprises halogen.
Claim 21
Dependent Claim
24 words
The process of claim 18 wherein the amount of the halogen present is from 0.1 to 5 weight percent based on total catalyst weight.
Claim 22
Dependent Claim
12 words
The process of claim 18 or 19 wherein the halogen is chlorine.
Claim 23
Dependent Claim
25 words
The process of any one of claims 1 to 20 wherein the calcination is conducted at a temperature of from 427°C (800°F) to 538°C (1000°F).
Claim 24
Dependent Claim
26 words
The process of any one of claims 1 to 21 wherein the composite is further subjected to carbon dioxide treatment after impregnation, but prior to calcination.
Claim 25
Dependent Claim
32 words
The process of any one of claims 1 to 22 wherein subsequent to the calcination, the composite is reduced in a hydrogen atmosphere at a temperature not in excess of 538°C (1000°F).
Claim 26
Dependent Claim
16 words
A catalyst produced according to the process of any one of claims 1 to 23. 1935N
References Cited (Backward Citations)
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