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Synthesis of diethyl carbonate from urea and ethanol over lanthanum oxide as a heterogeneous basic catalyst
Alternative TitleFuel Process. Technol.
Xin, Shumin2,3; Wang, Liguo2; Li, Huiquan2; Huang, Kelin3; Li, Fengjiao2
2014-10-01
Source PublicationFUEL PROCESSING TECHNOLOGY
ISSN0378-3820
Volume126Issue:OCTPages:453-459
AbstractThe catalytic synthesis of diethyl carbonate from urea and ethanol was investigated over various metal oxide catalysts. Among them, the lanthanum oxide prepared by precipitation method exhibited much higher catalytic activity. In particular, 38.6% of DEC yield could be achieved at the reaction conditions of ethanol/urea molar ratio of 10, reaction temperature of 210 degrees C within 3 h over La2O3-500. The catalyst structures and surface properties were studied by N-2 adsorption, XRD, FT-IR and CO2-TPD. On the basis of these results, it can be inferred that the high catalytic activity could be attributed to the abundant medium basicity of lanthanum oxide. Importantly, as confirmed by ICP-OES test, there was no obvious leaching of La into the resulting mixture. This phenomenon indicated that La2O3-500 was very stable during the reaction and behaved as a heterogeneous basic catalyst. In addition, the facile calcination of the used catalyst could provide an efficient way to regenerate the catalytic activity. (C) 2014 Elsevier B.V. All rights reserved.; The catalytic synthesis of diethyl carbonate from urea and ethanol was investigated over various metal oxide catalysts. Among them, the lanthanum oxide prepared by precipitation method exhibited much higher catalytic activity. In particular, 38.6% of DEC yield could be achieved at the reaction conditions of ethanol/urea molar ratio of 10, reaction temperature of 210 degrees C within 3 h over La2O3-500. The catalyst structures and surface properties were studied by N-2 adsorption, XRD, FT-IR and CO2-TPD. On the basis of these results, it can be inferred that the high catalytic activity could be attributed to the abundant medium basicity of lanthanum oxide. Importantly, as confirmed by ICP-OES test, there was no obvious leaching of La into the resulting mixture. This phenomenon indicated that La2O3-500 was very stable during the reaction and behaved as a heterogeneous basic catalyst. In addition, the facile calcination of the used catalyst could provide an efficient way to regenerate the catalytic activity. (C) 2014 Elsevier B.V. All rights reserved.
KeywordUrea Diethyl Carbonate Lanthanum Oxide Regeneration
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.fuproc.2014.05.029
URL查看原文
Indexed BySCI
Language英语
WOS KeywordEFFICIENT SYNTHESIS ; DIMETHYL CARBONATE ; PERFORMANCE ; HYDRATION ; MONOXIDE ; METHANOL ; LA2O3
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
WOS SubjectChemistry, Applied ; Energy & Fuels ; Engineering, Chemical
WOS IDWOS:000340329600051
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Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/11569
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc & Engn, Natl Engn Lab Hydrometallurg Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc & Engn, Beijing 100190, Peoples R China
3.Guangxi Univ Nationalities, Guangxi 530006, Peoples R China
Recommended Citation
GB/T 7714
Xin, Shumin,Wang, Liguo,Li, Huiquan,et al. Synthesis of diethyl carbonate from urea and ethanol over lanthanum oxide as a heterogeneous basic catalyst[J]. FUEL PROCESSING TECHNOLOGY,2014,126(OCT):453-459.
APA Xin, Shumin,Wang, Liguo,Li, Huiquan,Huang, Kelin,&Li, Fengjiao.(2014).Synthesis of diethyl carbonate from urea and ethanol over lanthanum oxide as a heterogeneous basic catalyst.FUEL PROCESSING TECHNOLOGY,126(OCT),453-459.
MLA Xin, Shumin,et al."Synthesis of diethyl carbonate from urea and ethanol over lanthanum oxide as a heterogeneous basic catalyst".FUEL PROCESSING TECHNOLOGY 126.OCT(2014):453-459.
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