Platinum group metal alloy catalysts for hydrogenation of carboxylic acids and their anhydrides to alcohols and/or esters
AssigneeThe British Petroleum Company p.l.c.
InventorsMelanie Kitson, Peter S. Williams
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Abstract
Catalyst composition comprising an alloy of at least one noble metal of group VIII of the Periodic Table and at least one metal capable of alloying with the group VIII noble metal, admixed with a component comprising at least one of the metals rhenium, tungsten or molybdenum, used for producing an alcohol and/or a carboxylic acid ester by reacting hydrogen with a carboxylic acid or anhydride thereof.
Claims16
A catalyst composition comprising an admixture of component (A) comprising an alloy of (i) at least one noble metal of Group VIII of the Periodic Table of the elements and (ii) at least one metal capable of alloying with the aforesaid Group VIII noble metal admixed with component (B) comprising at least one of the metals rhenium, tungsten and molybdenum.
A catalyst composition comprising component (A) comprising an alloy of (i) at least one noble metal of Group VIII of the Periodic Table of the elements and (ii) at least one metal capable of alloying with the aforesaid Group VIII noble metal and a support component (C) comprising a high surface area graphitised carbon having a BET surface area of at least 300 m.sup.2 /g;
- a ratio of BET to basal plane surface area of not greater than 4:1;
- and a ratio of basal plane surface area to edge surface area of at least 10:1, said graphitised carbon having been prepared by the successive steps of (1) heating a carbon material in an inert atmosphere at a temperature of from 900.degree. to 3300.degree. C., (2) oxidising the carbon at a temperature between 300.degree. C. and 1200.degree. C. and (3) heating in an inert atmosphere at a temperature of between 900.degree. C. and 3000.degree. C.
Dependencies are inferred from the claim text.