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	Synthesis of dialkyl hexamethylenedicarbamate from 1,6-hexamethylenediamine and alkyl carbamate over y(no(3))(3)center dot 6h(2)o catalyst
	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
	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
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000261538500005
内容类型	期刊论文
URI标识	http://www.corc.org.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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