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首页> 外文期刊>Catalysis science & technology >Mesoporous EU-1 zeolite as a highly active catalyst for ethylbenzene hydroisomerization
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Mesoporous EU-1 zeolite as a highly active catalyst for ethylbenzene hydroisomerization

机译：介孔EU-1沸石作为高度活跃乙苯催化剂hydroisomerization

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摘要

The hydroisomerization of ethylbenzene is an important industrial reaction to maximize the production of xylenes, and in particular, para-xylene. Zeolite EU-1 (with EUO topology) is commercially utilized in a physical mixture with a metallic phase (Pt/Al2O3). Herein, we have developed a micro-mesoporous EUO zeolite with a significant volume of intercrystalline mesoporosity to improve its catalytic performance in the industrial hydroisomerization of ethylbenzene. The use of a multivalent cationic surfactant as a capping agent was ideal to prevent uniform crystal growth and their aggregation, and to ensure the potential industrial applicability of the strategy. The corresponding mesoporosity and textural properties of nanosponge-like EUO were tuned according to the amount of the capping agent. The catalytic performance reflected the remarkable impact of a large exposed surface area (up to 55%) and a high amount of easily accessible Bronsted acid sites (up to 29%) in the EU-1 nanosponge on the catalytic yield. Our best catalyst revealed a three-fold increase in the conversion of ethylbenzene with no detrimental effects on the attained hydroisomerization yield. This approach presents a potential industrial capability in a wide range of catalytic applications as evidenced here in the hydroisomerization of ethylbenzene.
机译：hydroisomerization乙苯是一个重要的工业反应,最大化二甲苯的生产,特别是,对二甲苯。商业利用物理混合物金属相(Pt /氧化铝)。开发了一种micro-mesoporous去年同期的沸石与欧元上升至重要的晶间中孔隙,以改善其催化性能在工业hydroisomerization乙苯。表面活性剂作为覆盖剂是理想的防止均匀晶体生长和他们聚合和确保潜力工业战略的适用性。相应的中孔隙和结构nanosponge-like去年同期的是欧元上升至调优的属性根据数量的限制代理。催化性能反映了非凡的影响很大的表面积(公开55%)和大量的便利布仑斯惕酸网站EU-1(高达29%)nanosponge催化产生。催化剂显示增加了三倍没有有害的乙苯转化对获得hydroisomerization产量的影响。这种方法提供了一个潜在的工业在一个广泛的催化能力应用程序在这里便是明证hydroisomerization乙苯。

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