کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
57865 47133 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A density functional theory study of the hydrodesulfurization reaction of dibenzothiophene to biphenyl on a single-layer NiMoS cluster
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
A density functional theory study of the hydrodesulfurization reaction of dibenzothiophene to biphenyl on a single-layer NiMoS cluster
چکیده انگلیسی

The hydrodesulfurization of dibenzothiophene on a NiMoS cluster consisting of 1 Ni and 18 Mo atoms was investigated by means of density functional theory. The calculations focus on the direct desulfurization pathway where dibenzothiophene reacts with H2 to biphenyl and H2S. Critical steps with high activation energies are breaking of the two C–S bonds of the DBT molecule (ca. 32 kcal/mol), the activation of H2 by heterolytic dissociation and the removal of the formed biphenyl molecule from the catalyst surface (17 kcal/mol, respectively). All other reaction steps have activation energies of ≤10 kcal/mol.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 130, Issue 1, 15 January 2008, Pages 170–177
نویسندگان
, ,