Mordenite zeolite catalyst with special morphology and preparation method thereof

Abstract

The invention relates to a special-form mordenite catalyst and a preparing method thereof. The problem that the catalyst has a low activity and selectivity in an arene transalkylation reaction is mainly solved while the chain form improves the efficient mass transfer performance of a molecular sieve based catalyst. The chain-form mordenite serves as a carrier of the catalyst, and active componentsare selected from at least one of VIB elements, at least one of IIB elements, and at least one metal element in IA. The special-form mordenite catalyst well solves the technical problem and can be applied to industrial production of arene conversion like the arene transalkylation reaction.

Description

technical field

[0001] The invention relates to a mordenite catalyst with a special shape and a preparation method thereof, and is applied to the transalkylation reaction of aromatic hydrocarbons. Background technique

[0002] As one of the earliest zeolites recognized by humans, mordenite has special acid distribution and regular mass transfer channels, and has important industrial application value in petrochemical fields such as adsorption separation, catalytic cracking, disproportionation, transalkylation, and isomerization. In the two-dimensional pore system of mordenite, for the reaction of macromolecules such as aromatic hydrocarbons, the catalytic action generally only occurs in the elliptical straight main channel of the twelve-membered ring, while the eight-membered ring channel communicating with the main channel generally does not enter the channel. Therefore, for the reaction to reduce the diffusion limit, inhibiting the rapid growth of mordenite crystals in the...

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