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Kinetic Study of Methoxycarbonylation of Methylene Dianiline with Dimethyl Carbonate Using Lead Acetate Catalyst
Pei, Yixia1,2; Li, Huiquan1; Liu, Haitao1; Zhang, Yi1; Li, HQ
2011-02-16
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
Volume50Issue:4Pages:1955-1961
AbstractMethylene diphenyl dicarbamate (MDC) is a. key intermediate in the non phosgene manufacture of methylene diphenyl diisocyanate. The synthesis of MDC by methoxycarbonylation of methylene dianiline (MDA) with dimethyl carbonate in the presence of lead acetate catalyst, which showed high catalytic activity, was studied. Complete conversion of MDA and 98.10% yield of MDC were achieved under optimum conditions. To quantify the influence of both the temperature and reaction time, the kinetic parameters were investigated in the presence of Pb(OAc)(2)center dot 3H(2)O. A consecutive reaction model was established by simplifying the methoxycarbonylation process, and the two steps were confirmed to be first-order reactions by the integral test method and the numerical differential method, respectively. The results showed that the activation energies of the two steps are 175.84 and 177.92 kJ/mol, with the frequency factors being 1.91 x 10(20) and 1.98 x 10(20), respectively. Based on the kinetic model obtained, the progress of the reaction can be calculated under given conditions.
KeywordZinc Acetate Carbonylation Cohesive Particles Diisocyanate Carbamate Diamine Amines
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/ie1017095
Indexed BySCI
Language英语
WOS KeywordZINC ACETATE ; CARBONYLATION ; DIISOCYANATE ; CARBAMATE ; DIAMINE ; AMINES
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000287049700020
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5088
Collection湿法冶金清洁生产技术国家工程实验室
Corresponding AuthorLi, HQ
Affiliation1.Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Pei, Yixia,Li, Huiquan,Liu, Haitao,et al. Kinetic Study of Methoxycarbonylation of Methylene Dianiline with Dimethyl Carbonate Using Lead Acetate Catalyst[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2011,50(4):1955-1961.
APA Pei, Yixia,Li, Huiquan,Liu, Haitao,Zhang, Yi,&Li, HQ.(2011).Kinetic Study of Methoxycarbonylation of Methylene Dianiline with Dimethyl Carbonate Using Lead Acetate Catalyst.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,50(4),1955-1961.
MLA Pei, Yixia,et al."Kinetic Study of Methoxycarbonylation of Methylene Dianiline with Dimethyl Carbonate Using Lead Acetate Catalyst".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 50.4(2011):1955-1961.
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