کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
57267 47113 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of Zr-SBA-15 support on catalytic functionalities of Mo, CoMo, NiMo hydrotreating catalysts
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Effect of Zr-SBA-15 support on catalytic functionalities of Mo, CoMo, NiMo hydrotreating catalysts
چکیده انگلیسی

SBA-15 and ZrO2 (10–50 wt.%) containing SBA-15 mesoporous materials were prepared by direct and post-synthesis methods. Characterization using low angle XRD, pore size distribution, CO2 chemisorption indicate that hexagonal mesoporous structure is retained even after ZrO2 addition (25 wt.%). Mo, CoMo and NiMo catalysts prepared using these supports were examined by XRD, oxygen chemisorption, temperature programmed reduction (TPR). The catalysts were tested for hydrodesulfurization (HDS) of thiophene and hydrogenation (HYD) of cyclohexene. HDS of thiophene for 8%Mo, 3%Co8%Mo, and 3%Ni8%Mo increases with increasing ZrO2 loading in SBA-15 up to 25 wt.%. Oxygen chemisorption and TPR hydrogen consumption indicated that the molybdenum dispersion and anion vacancies, and catalytic activities are significantly influenced by ZrO2 content in Zr-SBA-15. A comparison indicated that TiO2-SBA-15, ZrO2-SBA-15 supported CoMo catalysts show higher activities for hydrodesulfurization.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 130, Issues 2–4, 30 January 2008, Pages 302–308
نویسندگان
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