Synthesis of dialkyl hexamethylenedicarbamate from 1,6-hexamethylenediamine and alkyl carbamate over y(no(3))(3)center dot 6h(2)o catalyst
文献类型：期刊论文
| 作者 | Zhang, Hongzhe1,2; Guo, Xiaoguang1,2; Zhang, Qinghua1,2; Ma, Yubo1,2; Zhou, Hancheng1; Li, Jian1,2; Wang, Liguo1,2; Deng, Youquan1 |
| 刊名 | Journal of molecular catalysis a-chemical
 |
| 出版日期 | 2008-12-10 |
| 卷号 | 296期号:1-2页码:36-41 |
| 关键词 | Green chemistry Alkyl carbamate Dialkyl hexamethylenedicarbamate 1,6-hexamethylenediamine Non-phosgene |
| ISSN号 | 1381-1169 |
| DOI | 10.1016/j.molcata.2008.08.020 |
| 通讯作者 | Deng, youquan(ydeng@lzb.ac.cn) |
| 英文摘要 | The non-phosgene carbonylation of 1,6-hexamethylenediamine (hda) with alkyl carbamates using y(no(3))(3)center dot 6h(2)o as a catalyst and the influence of reaction variables on the yields of dialkyl hexamethylenedicarbamate (hdc) were studied. at 453 k and in the presence of 5wt.% y(no(3))(3)center dot 6h(2)o, nearly 100% hda conversion and 85% dibutyl hexamethylenedicarbamate (bhdc) isolated yield could be achieved when butyl carbamate (bc) was employed as a carbonyl source. during reaction, an induction period was observed, but it almost disappeared by pretreating the catalyst with n-butanol. the ft-ir, x-ray diffraction (xrd) and x-ray photoelectron spectroscopy (xps) characterizations of the catalyst showed that some transformation occurred when the catalyst was pretreated with n-butanol or employed during reaction, i.e., part decomposition of y(no(3))(3) to y(2)o(3), conversion from crystal to amorphous state, changes occurring in chemical state of the active species, as well as some subtle interactions between the catalyst and n-butanol. all these observed changes might be the reason resulting in activation of the catalyst. (c) 2008 published by elsevier b.v. |
| WOS关键词 | N-PHENYL CARBAMATE ; DIMETHYL CARBONATE ; IONIC LIQUIDS ; OXIDATIVE CARBONYLATION ; ALIPHATIC-AMINES ; DIOXIDE ; PHOSGENE ; METHOXYCARBONYLATION ; ISOCYANATES ; URETHANES |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Physical |
| 语种 | 英语 |
| WOS记录号 | WOS:000261538500005 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2385523 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Deng, Youquan |
| 作者单位 | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Ctr Green Chem & Catalysis, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Hongzhe,Guo, Xiaoguang,Zhang, Qinghua,et al. Synthesis of dialkyl hexamethylenedicarbamate from 1,6-hexamethylenediamine and alkyl carbamate over y(no(3))(3)center dot 6h(2)o catalyst[J]. Journal of molecular catalysis a-chemical,2008,296(1-2):36-41. |
| APA | Zhang, Hongzhe.,Guo, Xiaoguang.,Zhang, Qinghua.,Ma, Yubo.,Zhou, Hancheng.,...&Deng, Youquan.(2008).Synthesis of dialkyl hexamethylenedicarbamate from 1,6-hexamethylenediamine and alkyl carbamate over y(no(3))(3)center dot 6h(2)o catalyst.Journal of molecular catalysis a-chemical,296(1-2),36-41. |
| MLA | Zhang, Hongzhe,et al."Synthesis of dialkyl hexamethylenedicarbamate from 1,6-hexamethylenediamine and alkyl carbamate over y(no(3))(3)center dot 6h(2)o catalyst".Journal of molecular catalysis a-chemical 296.1-2(2008):36-41. |
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来源：中国科学院大学
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