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首页> 外文期刊>RSC Advances >Three-dimensionally ordered macro–mesoporous CoMo bulk catalysts with superior performance in hydrodesulfurization of thiophene
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Three-dimensionally ordered macro–mesoporous CoMo bulk catalysts with superior performance in hydrodesulfurization of thiophene

机译：三维有序的宏观中孔COMO致催化剂，具有卓越的噻吩加氢脱硫性能

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摘要

The introduction of surfactants during the fabrication of hydrodesulfurization catalysts could not only tune the microstructure but also promote the dispersion of active components. In this work, CoMo bulk catalysts with the hierarchical structure of three-dimensionally ordered macro–mesopores were successfully fabricated by using a colloidal crystal template with the addition of PEG 400 and/or F127 surfactants. The obtained samples were characterized by various techniques, and the possible mechanism of the structure formation was also discussed. The characterization and evaluation results reveal that the addition of surfactants can promote the formation of the mesopores (3–4 nm) inside the macroporous walls of these bulk catalysts, which is essential for the increase of catalyst surface area, and the active sites for reaction. The CoMo–PF-1 catalyst displayed superior catalytic performance for thiophene hydrodesulfurization with the thiophene conversion of 99.4% under 1 MPa at 360 °C, which is much higher than that (77.8%) at 0.1 MPa. This result is even comparable to our previous report with the thiophene conversion of 99.2% over the 3DOM CoMo catalyst under 3 MPa.
机译：在制备加氢脱硫催化剂期间的表面活性剂的引入不仅可以调节微观结构，还可以促进活性组分的分散。在这项工作中，通过使用胶体晶体模板来加入PEG 400和/或F127表面活性剂，成功制造具有三维有序宏观-Mesopores的分层结构的COMO散装催化剂。通过各种技术表征所获得的样品，还讨论了结构形成的可能机制。表征和评价结果表明，表面活性剂的添加可以促进这些散粒催化剂的大孔壁内的中孔（3-4nm）的形成，这对于催化剂表面积的增加至关重要，以及用于反应的活性位点。 COMO-PF-1催化剂对噻吩加氢脱硫的催化性能优异，噻吩转化率为99.4％在360℃下，高于0.1MPa的高于（77.8％）。该结果甚至与我们之前的报告类似于3MMO Como催化剂的噻吩转化为99.2％。

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