文献类型：期刊文献

中文题名：1,1,2-三氯乙烷催化裂解制偏二氯乙烯催化剂的考评

英文题名：Study on the Catalyst of Dehydrochlorination of 1,1,2-Trichloroethane into Vinylidene Chloride

作者：李启登[1];袁向前[1];宋宏宇[1];李冰[1]

机构：[1]华东理工大学化学工程联合国家重点实验室,上海200237

年份：2015

卷号：31

期号：5

起止页码：417

中文期刊名：化学反应工程与工艺

外文期刊名：Chemical Reaction Engineering and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD_E2015_2016】；

语种：中文

中文关键词：1,1;2-三氯乙烷偏二氯乙烯催化裂解负载碱性金属盐

外文关键词：1,1,2-trichloroethane;;vinylidene chloride;;catalytic cracking;;load alkali metal salts

摘要：为研究1，1，2-三氯乙烷催化裂解制偏二氯乙烯的催化剂和反应机理，以果壳、椰壳、煤质活性炭和石墨为载体，在中压反应器中，原料空速1．04h^-1，温度130-230℃的条件下，负载碱性金属盐制备催化剂，通过改变催化剂载体、载体处理方法、负载活性组分种类以及含量四个因素来考察催化裂解效果。研究表明：椰壳活性炭经过氨水处理，负载碱性金属盐可以有良好的催化活性，其中负载氯化铯催化效果最好，转化率最高38％，选择率37％。同时发现了KOH作为活性组分对于本反应的进行有着很好的活性，130℃可达95％的选择性，寿命10h左右。根据初步实验结果探索催化裂解机理可能为碳正机理。
The catalysts and their reaction mechanism of cracking 1,1,2-trichloroethane to vinylidene chloride have been studied. Various catalysts have been prepared using fruit shell, coconut shell, coal activated carbon and graphite respectively as the carrier in a medium pressure reactor with the space velocity of raw material at of 1.04 h-1, the reaction temperature ranging in between 130-230 ℃ and the loaded alkali metal salt. Catalytic cracking effects have been investigated and evaluated by changing the catalyst carrier, carrier treatment method, loading of four kinds of active components and corresponding ammount. The results showed that coconut shell activated carbon treated with ammonia and loaded with alkali metal salts gave good catalytic activity. The best catalytic effect with 38% conversion and 37% the selectivity can be achieved by loading cesium chloride. It also demonstrated that KOH as active component has a good activity for this reaction, leading to 95% selectivity and catalystic life lasting for around 10 hours at 130 ℃. According to the result of the experiment, the catalytic cracking process appears to be the carbonation mechanism.