Studies on the epoxidation of methallyl chloride over TS-1 microsphere catalysts in a continuous slurry reactor

被引:21
作者
Deng, Zhixia [1 ]
Yang, Yulin [1 ]
Lu, Xinqing [1 ]
Ding, Jianghong [1 ]
He, Mingyuan [1 ]
Wu, Peng [1 ]
机构
[1] E China Normal Univ, Shanghai Key Lab Green Chem & Chem Proc, Sch Chem & Mol Engn, Shanghai 200062, Peoples R China
基金
中国国家自然科学基金;
关键词
TITANIUM SILICALITE-1 TS-1; HYDROGEN-PEROXIDE; EXTRAFRAMEWORK TITANIUM; MWW STRUCTURE; SELECTIVE PRODUCTION; HIGHLY EFFICIENT; ALLYLIC ALCOHOLS; MOLECULAR-SIEVES; RICH TS-1; HYDROXYLATION;
D O I
10.1039/c5cy02002f
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The epoxidation of methallyl chloride (MAC) to 2-methyl epichlorohydrin (MECH) with H2O2 using TS-1 microsphere catalysts (TS-1-MS) in a continuous slurry reactor was investigated. The reaction parameters, which governed the effective conversion of hydrogen peroxide, selectivity to MECH epoxide and catalyst deactivation, were studied in detail by simulating the operating conditions of its industrial process. Under the most beneficial conditions, the process was successfully run for 257 h at a high MECH selectivity (>95%) as well as a high effective conversion of hydrogen peroxide (>97%). The microsphere morphology and particle size were highly maintained for the deactivated TS-1-MS catalyst, which was regenerated readily by a combination of hydrogen peroxide washing and calcination. This research verified that it was possible to develop a green, safe and efficient route for producing MECH by direct epoxidation of MAC with hydrogen peroxide in a slurry reactor. Employing TS-1 microsphere aggregates as a catalyst exhibits the advantage of easy solid-liquid separation.
引用
收藏
页码:2605 / 2615
页数:11
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