Method of crystallizing a zeolite on the surface of a monolithic

Catalyst – solid sorbent – or support therefor: product or process – Zeolite or clay – including gallium analogs – And additional al or si containing component

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502 60, 502 68, B01J 2906

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active

048001872

ABSTRACT:
A method is provided of crystallizing strong-bound zeolites on the surfaces of a monolithic ceramic substrate by hydrothermally treating the substrate, in the presence of active silica, with a caustic bath to zeolitize the silica. According to various embodiments of the invention, the active silica can be present as a component of the caustic bath, in the form of a dried coating pre-deposited on the substrate, or as a separate phase of the monolithic substrate, homogeneous dispersed within the ceramic material.

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patent: 4157375 (1979-06-01), Brown et al.

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