Methanol-to-olefins over FeHZSM-5: Further transformation of products
Methanol-to-olefins over FeHZSM-5: Further transformation of products
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DOI：
10.1016/j.catcom.2014.07.025
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发表时间：
2014-11
影响因子：
3.7
通讯作者：
Mingyang Jiao;Subing Fan;Jianli Zhang;Xiaojuan Su;Tian-sheng Zhao
中科院分区：
文献类型：
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作者：
Mingyang Jiao;Subing Fan;Jianli Zhang;Xiaojuan Su;Tian-sheng Zhao
考察了FeHZSM-5分子筛对甲醇和混合C3°C+C_4烃转化的催化活性。与−-5相比，0.35%FeHZSM-5分子筛对丙烯和C2=-C4=烯烃的选择性分别提高了21%和4%。丙烷和丁烯的选择性降低。高温有利于C3℃+C4混合物的转化，而乙烯+丙烯的选择性在470℃时达到最大值。甲醇转化中烯烃选择性的提高归功于弱酸较多、强酸量较少的FeHZSM-5分子筛以及产物的进一步转化。
The catalytic activity of FeHZSM-5 was investigated for the conversion of both methanol and mixed C3° + C4hydrocarbons. For methanol conversion at WHSV = 1 h− 1and 470 °C, 0.35% FeHZSM-5 showed increased selectivity for propylene and C2=–C4=olefins by 21% and 4%, respectively, compared with HZSM-5. The selectivity of propane and butylene decreased. High temperature favored the conversion of C3° + C4mixture while the selectivity of ethene + propylene achieved a maximum at 470 °C. Improved olefins selectivity for methanol conversion was attributed to FeHZSM-5 with more weak acid but less strong acid amount and to further transformation of the products.