用于催化MTO的SAPO-34分子筛改性的研究进展  

Research on Modification of SAPO-34 Molecular Sieve for Catalytic MTO Reaction

作　　者：张岩[1] 李渊[1] 赵飞[1] 

机构地区：[1]天津工业大学环境与化学工程学院,天津300387

出　　处：《辽宁化工》2016年第8期1092-1094,共3页Liaoning Chemical Industry

摘　　要：SAPO-34分子筛是甲醇制烯烃过程中一种性能非常良好的催化剂,但是SAPO-34对催化甲醇的效果欠佳,所以要对其适当的改性。本文着重介绍了SAPO-34的金属改性,同时也介绍了水蒸汽处理,高温氮化处理和酸处理对SAPO-34分子筛的性能的影响,经过改性后,其低碳烯烃的选择性和寿命得到了提高。分析表明,抑制副产物丙烷和长链烷烃的产生是提高烯烃选择性的主要办法。SAPO-34 molecular sieve is a very good catalyst with good performance in MTO process, but the performance of pure SAPO-34 for catalyzing methanol is not good, so it should be appropriately modified. In this article, metal-modification of SAPO-34 molecular sieve was introduced; effect of steam treatment, high temperature nitriding treatment and acid treatment on the performance of the molecular sieve SAPO-34 was investigated. After the modification, the selectivity of light olefins and the lifetime of SAPO-34 molecular sieve were improved. Analysis results show that the main way to increase olefins＇ selectivity is to restrain the production of propane and long chain alkanes.

关 键 词：SAPO-34 改性 处理 选择性 寿命 

分 类 号：TQ426[化学工程]