Beta分子筛催化剂上甲苯和三甲苯烷基转移反应条件优化及其反应机理研究
发布时间：2018-07-23 19:31
【摘要】：以Beta分子筛为催化剂,系统考察了反应条件和催化剂酸性变化对甲苯和三甲苯烷基转移反应催化性能的影响.实验结果表明,反应条件、分子筛晶粒尺寸及其酸性对烷基转移催化活性和稳定性都具有显著影响.研究发现:当反应温度为450℃、压力为3 MPa以及反应物甲苯和三甲苯物质的量比为1时,二甲苯收率达到最高;分子筛催化活性随硅铝比升高而降低;催化剂晶粒尺寸减小能够显著提高反应稳定性.同时,还对甲苯和三甲苯烷基转移反应机理进行了深入研究,推导出了可能的反应机理路线图.
[Abstract]:The effects of reaction conditions and catalyst acidity on the catalytic performance of toluene and trimethylbenzene alkyl transfer reaction were systematically investigated using Beta molecular sieve as catalyst. The experimental results show that the reaction conditions, grain size and acidity of molecular sieve have significant effects on the catalytic activity and stability of alkyl transfer. The results show that when the reaction temperature is 450 鈩，
本文编号：2140425
[Abstract]:The effects of reaction conditions and catalyst acidity on the catalytic performance of toluene and trimethylbenzene alkyl transfer reaction were systematically investigated using Beta molecular sieve as catalyst. The experimental results show that the reaction conditions, grain size and acidity of molecular sieve have significant effects on the catalytic activity and stability of alkyl transfer. The results show that when the reaction temperature is 450 鈩，
本文编号：2140425
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