HYDRODESULFURIZATION REACTIONS OF ATMOSPHERIC GAS OIL OVER COMO ALUMINA-ALUMINUM BORATE CATALYSTS

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Title:	HYDRODESULFURIZATION REACTIONS OF ATMOSPHERIC GAS OIL OVER COMO ALUMINA-ALUMINUM BORATE CATALYSTS
Authors:	LI,CP;CHEN,YW;YANG,SJ;WU,JC
Contributors:	化學工程與材料工程學系
Keywords:	TRICKLE BED REACTOR;PHASE;MOLYBDENUM;HYDROGENATION;COBALT;STATE;ACID
Date:	1993
Issue Date:	2010-06-29 17:34:49 (UTC+8)
Publisher:	中央大學
Abstract:	A precipitation technique at constant pH value was used to prepare a series of alumina-aluminum borates (AABs) with various Al/B atomic ratios. These materials were used as the supports of Co-Mo catalysts. Hydrodesulfurization (HDS) of Kuwait atmospheric gas (AGO) oil was carried out over these presulfided catalysts in a bench-scale trickle bed reactor at 400 psi and 340-degrees-C. All CoMo/AAB catalysts are much more active than the conventional CoMo/Al2O3 catalyst on HDS reactions. A correlation exists between the acidity and the HDS activity of the catalysts. The high activities of the CoMo/AAB catalysts can be rationalized on the presence of boron. On one hand, it can increase the metal dispersions and hydrogenation capabilities. On the other hand, it can enhance the acidities and cracking abilities of the catalysts. The desulfurization data can be fitted with a pseudo-second-order rate equation. The activation energy for desulfurization is found to be 26 kcal/mol.
Relation:	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Appears in Collections:	[National Central University Department of Chemical & Materials Engineering] journal & Dissertation

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