초록 ▼

Zeolites washed with aqueous solutions or water or exhibit pH in the range of 9.4 to 10.0 and preferably 9.6 to 10.0 which can be converted to reforming catalysts with enhanced activity, selectivity and activity maintenance. Also processes for washing the zeolite to the target pH range and processes

Zeolites washed with aqueous solutions or water or exhibit pH in the range of 9.4 to 10.0 and preferably 9.6 to 10.0 which can be converted to reforming catalysts with enhanced activity, selectivity and activity maintenance. Also processes for washing the zeolite to the target pH range and processes for using catalysts made with the washed zeolite to reform naphtha feeds.

대표청구항 ▼

A reforming catalyst exhibiting enhanced selectivity, activity, and activity maintenance comprising: zeolite crystals having a pH within the range of 9.4 to 10.0, wherein said pH is determined by measuring pH of supernatent liquid from a mixture of one part of said zeolite crystals with ten parts of

A reforming catalyst exhibiting enhanced selectivity, activity, and activity maintenance comprising: zeolite crystals having a pH within the range of 9.4 to 10.0, wherein said pH is determined by measuring pH of supernatent liquid from a mixture of one part of said zeolite crystals with ten parts of dionized water by weight, and comprising exchangeable cations and at least oen catalytically active metal selected from the group consisting of Group VIII of the Periodic Table of Elements, tin and germanium. A process for treating zeolite to have a pH within a range effective in imparting enhanced activity, selectivity and activity maintenance to catalysts loaded onto said zeolite, said process comprisign washing zeolite with an aqueous liquid in a manner so as to result with zeolite having a pH within the pH range of 9.4 to 10.0 wherein said pH is determined by measuring pH of supernatent liquid from a mixture of one part of said zeolite crystals with ten parts of dionized water by weight.