Preparation of TiOy-SiOx Immobilized Pd-BMImCl Catalysts and Their Application in Carbonylation of Amines

Abstract

Abstract: Ahighly efficient Pd-BMImCl/TiO_y-SiO_x catalyst system synthesized through sol-gel method from palladium complex, ionic liquid, titanate and silicate esters was found for the oxidative carbonylation of amines. The catalyst efficiency was much higher than that reported in previous papers and the TOFnumber reached to 10372 when catalyst 0.05%Pd-4.6%BM ImCl/TiO_y-SiO_x was used. The usability of ionic liquid was the key point for preparation of this catalyst system because of its high dissolvability to palladium complex and affording appropriate micro-environment for the reaction. The synergism among palladium complex, ionic liquid, titanate and silicate was the main reason for the high catalytic activity of the catalyst system. BET, AESand XRDwere used to characterized the catalysts in detail.

Key words: Carbonylation, Sol-gel, Aniline, Carbamate

CLC Number:

O654.285

TrendMD:

SHI Feng, MA Yu-Chun, ZHOU Han-Cheng, DENG You-Quan. Preparation of TiO_y-SiO_x Immobilized Pd-BMImCl Catalysts and Their Application in Carbonylation of Amines[J]. Chem. J. Chinese Universities, 2002, 23(9): 1781.

References

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