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CAS OpenIR  > 中科院上海应用物理研究所2011-2017年  > 期刊论文
题名:
Dehydrochlorination of 1,2-dichloroethane over Ba-modified Al2O3 catalysts
作者: Bai, SX; Dai, QG; Chu, XX; Wang, XY
刊名: RSC ADVANCES
出版日期: 2016
卷号: 6, 期号:58, 页码:52564-52574
DOI: 10.1039/c6ra08855d
通讯作者: Wang, XY (reprint author), E China Univ Sci & Technol, Res Inst Ind Catalysis, Key Lab Adv Mat, Shanghai 200237, Peoples R China.
文章类型: 期刊论文
英文摘要: Bimodal mesoporous alumina (Al2O3) was prepared using polyethyleneglycol (PEG 20 000) and cetyl trimethyl ammonium bromide as a template. The incorporation of Ba with various loadings was carried out by incipient wetness. Characterization was performed by XRD, N-2 sorption isotherms, and pyridine FTIR. Ba can be highly dispersed on Al2O3 covering the strong acid sites of Al2O3. In the catalytic dehydrochlorination of 1,2-dichloroethane (1,2-DCE), the Ba/Al2O3 catalysts present a high activity, of which Al2O3 is most active with 95% conversion at 325 degrees C, related to the more Lewis acidic Al3+ sites in a tetrahedral environment. 1,2-DCE adsorbs dissociatively on Lewis acid-base pair sites, forming chlorinated ethoxy species, which are supposed to be intermediate species for vinyl chloride (VC) production. At a temperature higher than 400 degrees C, the dehydrochlorination of VC occurs on the strong acid sites of Al2O3. Ba can promote greatly the selectivity for VC through a decrease in the strong acid sites. A high stable activity for dehydrochlorination and high selectivity for VC can be obtained over Ba/Al2O3 in the presence of oxygen.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000378563200007
ISSN号: 2046-2069
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26468
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Bai, SX,Dai, QG,Chu, XX,et al. Dehydrochlorination of 1,2-dichloroethane over Ba-modified Al2O3 catalysts[J]. RSC ADVANCES,2016-01-01,6(58):52564-52574.
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