Effect of promoters on structure and performance of activated carbon-supported Wacker-type catalysts for synthesis of dimethyl carbonate | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

1153518

Reference Type

Journal Article

Title

Effect of promoters on structure and performance of activated carbon-supported Wacker-type catalysts for synthesis of dimethyl carbonate

Author(s)

Yang, P; Cao, Y; Bao, XH; Dai, WL; Fan, KN

Year

2004

Is Peer Reviewed?

Journal

Cuihua Xuebao / Chinese Journal of Catalysis
ISSN: 0253-9837

Volume

Issue

Page Numbers

995-999

Web of Science Id

WOS:000226325900014

Abstract

Activated carbon-supported Wacker-type catalysts (PdCl2-CuCl2) were prepared by using salts and hydrates of alkali and alkaline earth metals as promoters. It is revealed that the catalyst modified by KOAc exhibited the best catalytic performance in dimethyl carbonate (DMC) synthesis by oxidative carbonylation of methanol. The space-time yield (STY) of DMC over the catalyst with KOAc/CuCl2 = 1.0 was six timer the STY over the unmodified catalyst. The results of XRD, SEM and EPR suggested that a proper amount of KOAc was in favor of the formation and dispersion of Cu2Cl(OH)(3) species. and therefore the redox cycle of active Cu and Pd species was expedited.

Keywords

Wacker-type catalyst; palladium chloride; copper chloride; dimethyl carbonate; potassium acetate; methanol; oxidative carbonylation