초록 ▼

Catalysts of improved strength and activity are formed by compositing a clay matrixing material with a zeolite which contains cations of a Group IB metal, preferably a monovalent metal such as silver. The presence of the cations gives the zeolite improved resistance to the high sintering temperature

Catalysts of improved strength and activity are formed by compositing a clay matrixing material with a zeolite which contains cations of a Group IB metal, preferably a monovalent metal such as silver. The presence of the cations gives the zeolite improved resistance to the high sintering temperatures necessary to confer adequate strength upon the resulting catalyst.

대표청구항 ▼

A method of forming a calcined zeolite containing catalyst, which comprises treating the zeolite, having exchangeable sites, with a source of a Group IB metal cation in an amount sufficient to insure that at least 10 percent of the exchangeable sites are Group IB metal cation exchanged; forming a co

A method of forming a calcined zeolite containing catalyst, which comprises treating the zeolite, having exchangeable sites, with a source of a Group IB metal cation in an amount sufficient to insure that at least 10 percent of the exchangeable sites are Group IB metal cation exchanged; forming a composite of said exchanged zeolite with a clay matrixing material, in which the zeolite does not exceed about 50 percent by weight of the composite; and calcining the composite at a temperature above 600°C., whereby the alpha value of the composite after calcination is greater than that of a calcined mixture of said clay matrixing material and the zeolite. The method of claim 1, wherein said zeolite is ZSM-5, ZSM-11, ZSM-12, ZSM-20, ZSM-35, ZSM-39, zeolite X, zeolite Y, zeolite Beta or mordenite. The method of claim 2, wherein said Group IB metal is copper or silver.