کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
64335 48326 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simultaneous operation of dibenzothiophene hydrodesulfurization and methanol reforming reactions over Pd promoted alumina based catalysts
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Simultaneous operation of dibenzothiophene hydrodesulfurization and methanol reforming reactions over Pd promoted alumina based catalysts
چکیده انگلیسی

In the current study simultaneous reactions of hydrodesulfurization (HDS) of dibenzothiophene (DBT) and reforming of methanol in a micro-autoclave reactor were studied over bi-metallic (Co-Mo/Al2O3 and Ni-Mo/Al2O3) and tri-metallic (Pd-Co-Mo/Al2O3 and Pd-Ni-Mo/Al2O3) catalyst systems which were prepared by incipient impregnation method. In situ hydrogen utilization and low Pd loadings were the major targets of this study. For comparison purpose, catalytic activity was separately determined for both the methanol reforming and HDS of DBT reactions as well. Ni based catalysts were confirmed with better activity than Co ones for both the reactions with Pd promoted ones ranking at the top i.e. Pd-Ni-Mo/Al2O3 > Ni-Mo/Al2O3 > Pd-Co-Mo/Al2O3 > Co-Mo/Al2O3 where Pd-Ni-Mo/Al2O3 showed 91% DBT conversion at 380°C and 12 h reaction time. Some of the selected organic additives on catalytic activity were tested for their effect toward HDS reaction which was unique with close relation to their chemical nature. Reaction products were quantitatively and qualitatively analyzed via HPLC and GC-MS techniques respectively which helped in elucidating reaction mechanism.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Fuel Chemistry and Technology - Volume 40, Issue 6, June 2012, Pages 714-720