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Fe2O3/HZSM-5催化转化乙醇制备低碳烯烃
Authors
余剑
张战国
+3 more
朱剑虹
段正康
许光文
Publication date
1 January 2010
Publisher
Abstract
采用浸渍法制备了Fe2O3/HZSM-5分子筛催化剂,并用于乙醇脱水与低聚制备丙烯为主的低碳烯烃反应体系.在400—500℃范围内考察了HZSM-5的硅/铝比、氧化铁负载量、反应温度、催化剂氢气还原预处理对产物中烯烃收率的影响.结果表明,HZSM-5硅/铝比为140时,丙烯、丁烯收率最高;氧化铁负载能有效提高烯烃收率,当负载量为2.9%时丙烯收率最高,接近25%:反应初期升高温度可促进丙烯生成,但催化剂寿命缩短;氢气还原预处理能进一步促进乙烯、丙烯生成
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Last time updated on 11/04/2021