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Zinc oxide as the precursor of homogenous catalyst for synthesis of dialkyl carbonate from urea and alcohols

Paper ID Volume ID Publish Year Pages File Format Full-Text
52971 46892 2009 4 PDF Available
Title
Zinc oxide as the precursor of homogenous catalyst for synthesis of dialkyl carbonate from urea and alcohols
Abstract

Zinc oxide (ZnO) was considered as an ideal heterogeneous catalyst for the synthesis of dialkyl carbonate from urea and alcohols in the previous works. However, according to the recent results of XRD, FTIR, TG–DSC and element analysis, ZnO was evidently found to be the precursor of homogenous catalyst Zn(NH3)2(NCO)2. Such a species could be formed via the coordination of NH3 to Zn(NCO)2, which originated from the reaction of ZnO with HNCO, the latter was the product of urea thermal decomposition.

Keywords
Urea; Alcohol; Dialkyl carbonate; Alkyl carbamate; Zinc oxide; Diammine zinc isocyanate
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Zinc oxide as the precursor of homogenous catalyst for synthesis of dialkyl carbonate from urea and alcohols
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 10, Issue 5, 25 January 2009, Pages 655–658
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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