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Synthesis of diethyl carbonate from ethyl carbamate and ethanol over ZnO-PbO catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
40892 45869 2012 7 PDF Available
Title
Synthesis of diethyl carbonate from ethyl carbamate and ethanol over ZnO-PbO catalyst
Abstract

The synthesis of diethyl carbonate (DEC) from ethyl carbamate and ethanol was investigated over a series of double metal oxides. Among the catalysts, ZnO-PbO showed the best catalytic activity and the highest DEC yield was 20.6%. Furthermore, ZnO-PbO had an excellent reusability. According to the results of XRD measurement, IR and element analysis, ZnO and PbO in ZnO-PbO catalyst were separately converted to Zn(NCO)2(NH3)2 and metal Pb during the reaction, indicating that the mixture of Zn(NCO)2(NH3)2 and metal Pb may be the real active composition for DEC synthesis and ZnO-PbO is the precursor. In addition, a possible reaction mechanism for DEC synthesis was proposed.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (92 K)Download as PowerPoint slideHighlights► ZnO-PbO shows a high catalytic performance for diethyl carbonate synthesis. ► ZnO-PbO also shows an excellent reusability. ► Zn(NCO)2(NH3)2 and cubic metal Pb are the real active composition. ► The catalytic mechanism of Zn(NCO)2(NH3)2 and cubic metal Pb has been elucidated.

Keywords
Diethyl carbonate; Ethyl carbamate; Ethanol; Urea; ZnO-PbO
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Synthesis of diethyl carbonate from ethyl carbamate and ethanol over ZnO-PbO catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 433–434, 8 August 2012, Pages 229–235
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us