Non-phosgene synthesis of isocyanates based on CO2: Synthesis of methyl N-phenyl carbamate through coupling route with lead compound catalysts

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	Non-phosgene synthesis of isocyanates based on CO2: Synthesis of methyl N-phenyl carbamate through coupling route with lead compound catalysts
	Gao, Junjie 1,2; Li, Huiquan 2; Zhang, Yi 2; Fei, Weiyang 1
刊名	CATALYSIS TODAY
	2009-11-30
卷号	148 期号:3-4 页码:378-382
关键词	Isocyanates Non-phosgene synthesis Methyl N-phenyl carbamate Coupling route Lead compound catalysts CO2 utilization
ISSN号	0920-5861
通讯作者	Fei, WY
英文摘要	The synthesis of methyl N-phenyl carbamate (MPC), the key intermediate for the non-phosgene synthesis of isocyanates based on CO2, was studied from the reaction of dimethyl carbonate and N,N'-diphenyl urea under pressure. A variety of solid catalysts were screened, which showed lead compounds such as PbO, PbO2, PbCO3, and 2PbCO(3)center dot Pb(OH)(2) had excellent catalytic activity. The characterization of XRD showed that the screened lead compound catalysts after reaction were changed into the same lead compound with the group -PbOH. With the increase of recycling times of the used lead compound catalysts, the selectivity of MPC and conversion of DPU were still about 99%. And the characterization of XRD and FRIR showed that new lead compound, which was produced with the increase of recycling times of the used lead compound catalysts, was also a lead compound with -PbOH. So the above results indicated that the real lead catalyst was the compound containing -PbOH. A possible reaction mechanism was discussed with the lead compound catalysts. (C) 2009 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]	Chemistry ; Engineering
关键词[WOS]	DIMETHYL CARBONATE ; UREAS ; CARBONYLATION ; METHANOL ; ANILINE ; AMINES
收录类别	SCI ; ISTP
语种	英语
WOS记录号	WOS:000272972400028
公开日期	2013-11-29
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/6549]
专题	过程工程研究所_湿法冶金清洁生产技术国家工程实验室
作者单位	1.Tsinghua Univ, State Key Lab Chem Engn, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Gao, Junjie,Li, Huiquan,Zhang, Yi,et al. Non-phosgene synthesis of isocyanates based on CO2: Synthesis of methyl N-phenyl carbamate through coupling route with lead compound catalysts[J]. CATALYSIS TODAY,2009,148(3-4):378-382.
APA	Gao, Junjie,Li, Huiquan,Zhang, Yi,&Fei, Weiyang.(2009).Non-phosgene synthesis of isocyanates based on CO2: Synthesis of methyl N-phenyl carbamate through coupling route with lead compound catalysts.CATALYSIS TODAY,148(3-4),378-382.
MLA	Gao, Junjie,et al."Non-phosgene synthesis of isocyanates based on CO2: Synthesis of methyl N-phenyl carbamate through coupling route with lead compound catalysts".CATALYSIS TODAY 148.3-4(2009):378-382.