کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5370133 1388475 2006 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study to improve the quality of a Mexican straight run gasoil over NiMo/γ-Al2O3 catalysts
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Study to improve the quality of a Mexican straight run gasoil over NiMo/γ-Al2O3 catalysts
چکیده انگلیسی

Four NiMo catalyst supported on Al2O3 with different textural properties have been studied in the hydrodesulfurization (HDS), hydrodenitrogenation (HDN) and hydrodearomatization (HDA) of a Mexican straight run gasoil (SRGO). All reactions were carried out at three different temperatures 613, 633, and 653 K. Alumina supports were analysed by pyridine FTIR-TPD and nitrogen physisorption in order to determine their surface acidity and textural properties, respectively. TPR studies of the NiMo catalysts were analysed to correlate their hydrogenating properties. Metallic particles were characterized (after sulfidation) using transmission electron microscopy (TEM). Catalytic activities are discussed in relation to the physicochemical properties of NiMo catalysts. The importance of textural properties on coke deposition has been emphasized. The results of catalytic activity of these materials varied depending on dispersed MoS particles and pore distribution in final catalysts. The optimum pore diameter was found around 80 Å for HDS and HDN.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 253, Issue 3, 30 November 2006, Pages 1205-1214
نویسندگان
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