Synthesis of Diphenyl Carbonate via Transesterification Catalyzed by HMS Mesoporous Molecular Sieves Containing Heteroelements

Abstract

Abstract: Heteroelements-containing mesoporous molecular sieves Me-HMS (Me=the incorporated metal) were prepared by the hydrothermal synthesis mothod and used for the synthesis of diphenyl carbonate (DPC) via transesterification between dimethyl carbonate (DMC) and phenol. Low angleX-raydiffraction patterns showed that all samples have typical of hexagonal phase structure. Among all tested Me-HMS samples, Ti-HMS exhibited the best catalytic performance, and the activity was closely related to the intra-framework Ti species content. When the molar ratio of Ti/Si in sol-gel reached 1/30, the amount of intra-framework Ti species in Ti-HMS was closed to saturation, and the maximum phenol conversion of 31.4% and the transesterification selectivity of 99.9% were obtained.

Key words: HMS mesoporous molecular sieve, dimethyl carbonate, phenol, transesterification, diphenyl carbonate

LUO Shuwen;CHEN Tong*;TONG Dongshen;ZENG Yi;LEI Yongcheng;WANG Gongying. Synthesis of Diphenyl Carbonate via Transesterification Catalyzed by HMS Mesoporous Molecular Sieves Containing Heteroelements[J]. Chinese Journal of Catalysis, 2007, 28(11): 937-939.

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Synthesis of Diphenyl Carbonate via Transesterification Catalyzed by HMS Mesoporous Molecular Sieves Containing Heteroelements

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