Patent ID: 7381682
Filing Date: 2008-06-03
Classification: B01D,B01J

Abstract:
1. A method for producing a supported platinum catalyst comprising: contacting a quantity of alumina support material with a volume of water for a first time period to form a liquid mixture, wherein said volume of water is greater than two times a pore volume of said quantity of alumina support material; adding a platinum salt solution having a molar concentration of 0.0001 to 0.1 to said liquid mixture following said first time period and stirring said liquid mixture for a second time period; and adding a reducing agent to said liquid mixture following said second time period and stirring said liquid mixture for a third time period, wherein said platinum salt is reduced to platinum particles within pores of said quantity of alumina support material within said liquid mixture during said third time period, wherein the average platinum particle diameter is greater than 3.0 nm and less than 5.0 nm.