复合模板剂制备片状SAPO-34分子筛及催化MTO反应

摘要

采用三乙胺为主模板剂、双端氨基聚乙二醇800为辅助模板剂制备出片状SAPO-34分子筛,使用XRD、SEM、BET及NH₃-TPD对样品进行表征;并考察在甲醇制烯烃反应中的催化性能。结果表明,所合成的片状SAPO-34分子筛具有较大的比表面积(720 m²/g)和适中的酸性。在催化甲醇制烯烃反应中表现出较长的寿命,甲醇转化率达到99%以上,乙烯和丙烯(双烯)选择性达到80%以上。

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	石华
	耿玉侠
	马国栋
	钱震
	王海国
	程庆彦

关键词： SAPO-34分子筛；棱片状；复合模板剂；甲醇制烯烃反应

Abstract：

The pseudocubic plate-like SAPO-34 molecular sieves were synthesized using composite templates, and were characterized by XRD, SEM, BET and NH₃-TPD. The as-synthesized SAPO-34 zeolites displayed BET surface areas up to 720 m²/g, moderate acidity. The activities of catalysts in the process of methanol to olefin (MTO) by using the obtained SAPO-34 molecular sieves were investigated. The catalysts exhibited relative longer life span, methanol conversion was over 99% and the total selectivity to ethylene and propylene could be over 80%.

Keywords： SAPO-34 molecular sieves； pseudocubic plate-like； composite templates； methanol to olefin

Received 2015-06-01;

Corresponding Authors: 程庆彦,E-mail:chengqingyan@hebut.edu.cn。 Email: chengqingyan@hebut.edu.cn

About author: 石华(1982-),男,博士,工程师,现从事分子筛催化方面的研究。

引用本文:

石华, 耿玉侠, 马国栋, 钱震, 王海国, 程庆彦.复合模板剂制备片状SAPO-34分子筛及催化MTO反应[J]. 化学工业与工程, 2015,32(5): 109-112

Shi Hua, Geng Yuxia, Ma Guodong, Qian Zhen, Wang Haiguo, Cheng Qingyan.Preparation of Lamellate SAPO-34 Molecular Sieves with Composite Templates for MTO Reaction[J]. Chemcial Industry and Engineering, 2015,32(5): 109-112

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