Issue 22, 2016

Catalytic degradation of polyurea: synthesis of N-substituted carbamates with CuO–ZnO as the catalyst

Abstract

A composite oxide CuO–ZnO catalyst was prepared and tested in the degradation of various polyureas using urea as the carbonyl source for the first time in this field. Under the optimized reaction conditions, a 96% diethyl hexamethylenedicarbamate (EHDC) yield was obtained with polyurea-hexamethylenediamine (PU-HDA) over the CuO–ZnO catalyst. The characterization results of the structural and component properties of the prepared catalyst indicated that the Zn-rich polycrystalline oxide with good dispersion exhibited enhanced catalytic activity in this reaction system. Moreover, the catalytic mechanism of the CuO–ZnO catalyst in polyurea degradation was proposed and investigated preliminarily.

Graphical abstract: Catalytic degradation of polyurea: synthesis of N-substituted carbamates with CuO–ZnO as the catalyst

Supplementary files

Article information

Article type
Paper
Submitted
11 Jul 2016
Accepted
22 Aug 2016
First published
23 Aug 2016

Green Chem., 2016,18, 6091-6098

Catalytic degradation of polyurea: synthesis of N-substituted carbamates with CuO–ZnO as the catalyst

Q. Li, P. Wang, S. Liu, Y. Fei and Y. Deng, Green Chem., 2016, 18, 6091 DOI: 10.1039/C6GC01884J

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