M. C. Maciel Arreola, J. A. Medina Cervantes, R. I. Yocupicio Gaxiola, A. Infantes Molina, R. Huirache-Acuña, S. Fuentes Moyado, G. Alonso Núñez
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引用次数: 0
摘要
在二苯并噻吩的加氢脱硫反应中，合成、表征并测试了硅柱 MFI 沸石上支撑的镍和钴硫化物基催化剂。通过初湿浸渍工艺掺入了金属相，并采用不同的技术测定了所获催化剂的理化性质，如 X 射线衍射、- 196 °C 下的 N2 吸附-解吸、红外光谱和高分辨率透射电子显微镜。二苯并噻吩加氢脱硫的催化性能表明，NiW 催化剂的活性最高，这是因为 NiS 在 WS2 上重新分散形成了活性 NiWS 相。相反，在钴存在的情况下，并没有出现所需的 CoWS 相，因此催化性能恶化。
Si-pillared MFI zeolites as promising supports for HDS catalysts
Nickel and cobalt sulfide-based catalysts supported on a silicon-pillared MFI zeolite were synthesized, characterized, and tested in the hydrodesulfurization reaction of dibenzothiophene. The metallic phases were incorporated by following the incipient wetness impregnation process, and different techniques were employed to determine the physicochemical properties of the obtained catalysts, such as X-ray diffraction, N2 adsorption–desorption at – 196 °C, Infrared Spectroscopy and High-Resolution Transmission Electron Microscopy. The catalytic performance in the hydrodesulfurization of dibenzothiophene showed that the NiW catalyst was the most active due to the redispersion of NiS on WS2 to form the active NiWS phase. Instead, the desired CoWS phase did not occur under the presence of cobalt, and therefore, the catalytic performance worsened.
期刊介绍：
MRS Communications is a full-color, high-impact journal focused on rapid publication of completed research with broad appeal to the materials community. MRS Communications offers a rapid but rigorous peer-review process and time to publication. Leveraging its access to the far-reaching technical expertise of MRS members and leading materials researchers from around the world, the journal boasts an experienced and highly respected board of principal editors and reviewers.
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