Bimetallic catalytic composite

Abstract

Abstract A CATALYTIC COMPOSITE COMPRISING A COMBINATION OF A PLATINUM COMPONENT, A LEAD COMPONENT AND A HALOGEN COMPONENT WITH A PROOUS CARRIER MATERIAL IS DISCLOSED. THE PLATINUM AND HALOGEN COMPONENTS ARE PRESENT IN THE COMPOSITIE IN AMOUNTS, CALCULATED ON AN ELEMENTAL BASIS, OF ABOUT 0.01 TO ABOUT 2 WT. PERCENT PLATINUM AND ABOUT 0.1 TO ABOUT 3.5 WT. PERCENT HALOGEN, AD THE LEAD COMPONENT IS PRESENT IN AN ATOMIC RATIO TO THE PLATINUM COMPONENT OF ABOUT 0.05:1 TO ABOUT 0.9:1. MOREOVER, BOTH THE PLATINUM COMPONENT AND THE LEAD COMPONENT ARE UNIFORMLY DESPERSED THROUGHOUT THE POROUS CARRIER MATERIAL, AND SUBSTANTIALLY ALL OF THE PLATINUM IS PRESENT AS THE ELEMENTAL METAL AND SUBSTANTIALLY ALL OF THE LEAD IS PRESENT IN AN OXIDATION STATE ABOVE THAT OF THE ELEMENTAL METAL. THE PRINCIPAL UTILITY OF THE SUBJECT COMPOSITE IS IN THE CONVERSION OF HYDROCARBONS, PARTICULARLY IN THE REFORMING OF A GASOLINE FRACTION. A SPECIFIC EXAMPLE OF THE CATALYST DISCLOSED IS A COMBINATION OF A PLATINUM METAL COMPONENT, A LEAD OXIDE COMPONENT AND A HALOGEN COMPONENT WITH AN ALUMINA CARRIER MATERIAL WHEREIN THE PLATINUM AND LEAD COMPONENTS ARE UNIFORMLY DISPERSED THROUGHOUT THE CARRIER MATERIAL AND WHEREIN THE COMPOSITE CONTAINS 0.01 TO 2 WT. PERCENT PLATINUM, 0.1 TO 3.5 WT. PERCENT HALOGEN, AND AN ATOMIC RATIO OF LEAD TO PLATINUM OF 0.05:1 TO 0.9:1.

Inventors

• 👤 F Wilhelm

Bibliographic Details