Dehydrochlorination of 1,2-dichloroethane over Ba-modified Al2O3 catalysts
Bai, SX; Dai, QG; Chu, XX; Wang, XY; Wang, XY (reprint author), E China Univ Sci & Technol, Res Inst Ind Catalysis, Key Lab Adv Mat, Shanghai 200237, Peoples R China.
2016
发表期刊RSC ADVANCES
ISSN2046-2069
卷号6期号:58页码:52564-52574
文章类型期刊论文
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.
DOI10.1039/c6ra08855d
收录类别SCI
语种英语
WOS记录号WOS:000378563200007
引用统计
被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/26468
专题中科院上海应用物理研究所2011-2018年
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.
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GB/T 7714
Bai, SX,Dai, QG,Chu, XX,et al. Dehydrochlorination of 1,2-dichloroethane over Ba-modified Al2O3 catalysts[J]. RSC ADVANCES,2016,6(58):52564-52574.
APA Bai, SX,Dai, QG,Chu, XX,Wang, XY,&Wang, XY .(2016).Dehydrochlorination of 1,2-dichloroethane over Ba-modified Al2O3 catalysts.RSC ADVANCES,6(58),52564-52574.
MLA Bai, SX,et al."Dehydrochlorination of 1,2-dichloroethane over Ba-modified Al2O3 catalysts".RSC ADVANCES 6.58(2016):52564-52574.
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