Environment-friendly synthesis of diethyl carbonate via ethyl carbamate alcoholysis over cerium oxide catalyst.
JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019;
232:952-956. [PMID:
33395763 DOI:
10.1016/j.jenvman.2018.12.013]
[Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/05/2018] [Accepted: 12/04/2018] [Indexed: 06/12/2023]
Abstract
A series of cerium oxide catalysts were prepared by simply calcination of nitrate cerium, and used for clean synthesis of diethyl carbonate (DEC) by ethyl carbamate (EC) alcoholysis. 51% conversion and 82% selectivity were obtained with catalyst CeO2-600. Almost the same activity as the fresh sample could be regained if the used catalyst was recalcined at 600 °C. XPS, XRD, CO2-TPD and BET study suggested that high surface area and the presence of abundant basic sites are important to achieve a higher catalytic performance.
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