catalisador para desproporcionamento com seletividade de forma de tolueno, processos para preparar o mesmo, e, para desproporcionar com seletividade de forma tolueno em p-xileno.

摘要

The present invention discloses a catalyst for toluene shape selective disproportionation, comprising: a) 45 to 95 wt % of ZSM-5 molecular sieve having an average particle size of from 0.3 to 6 mum and a molar ratio of SiO2 to Al2O3 of from 20 to 120; b) 0.01 to 30 wt % of at least one metal selected from the group consisting of Group IIB metals, Group IIIB metals, rare earth elements and Group VIII metals other than nickel, or oxide(s) thereof; c) 0 to 20 wt % of at least one metal selected from the group consisting of Group VA metals, Group VIB metals and alkaline earth metals, or oxide(s) thereof; d) 1 to 25 wt % of a silica inert surface coating derived from an organopolysiloxane; and e) 1 to 50 wt % of a binder. The present invention further discloses a process for shape selectively disproportionating toluene into p-xylene, comprising contacting a reaction stream containing toluene with the catalyst for toluene shape selective disproportionation under toluene disproportionation conditions.