کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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61885 | 47610 | 2010 | 14 صفحه PDF | دانلود رایگان |

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
Journal: Journal of Catalysis - Volume 274, Issue 2, 9 September 2010, Pages 273–286