کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
61885 47610 2010 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis, characterization, and catalytic performance of NiMo catalysts supported on hierarchically porous Beta-KIT-6 material in the hydrodesulfurization of dibenzothiophene
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Synthesis, characterization, and catalytic performance of NiMo catalysts supported on hierarchically porous Beta-KIT-6 material in the hydrodesulfurization of dibenzothiophene
چکیده انگلیسی

Micro-mesoporous composite material Beta-KIT-6 (BK) with the BEA microporous structure and cubic Ia3d mesoporous structure was synthesized and used as catalyst support for the hydrodesulfurization of dibenzothiophene. The composite material possessed both KIT-6 and Beta structures. NiMo/BK had similar acidity as NiMo/Beta and possessed more acid sites and stronger acidity than NiMo/KIT-6 and NiMo/SBA-15. NiMo/BK showed the highest dibenzothiophene hydrodesulfurization activity among all the catalysts that were studied, and the dibenzothiophene conversion on NiMo/BK was about 2–3 times that of NiMo/Al2O3. The acidity of NiMo/BK enhanced the activity of the direct desulfurization pathway more significantly than that of the hydrogenation pathway. Cyclohexen-1-yl-benzene was detected as intermediate of the hydrogenation pathway. NiMo/KIT-6 exhibited higher activity than NiMo/SBA-15 due to the superior mass transfer ability of the cubic Ia3d mesoporous structure.

Micro-mesoporous composite material of Beta-KIT-6 (BK) was successfully synthesized. Superior mass transfer property combined with suitable acidity make Beta-KIT-6-supported NiMo an excellent catalyst for the hydrodesulfurization of dibenzothiophene.Figure optionsDownload high-quality image (118 K)Download as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Catalysis - Volume 274, Issue 2, 9 September 2010, Pages 273–286
نویسندگان
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