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Highly active deep HDS catalysts prepared using Mo and W heteropolyacids supported on SBA-15

Paper ID Volume ID Publish Year Pages File Format Full-Text
48272 46499 2008 12 PDF Available
Title
Highly active deep HDS catalysts prepared using Mo and W heteropolyacids supported on SBA-15
Abstract

A series of Mo (W) catalysts promoted by Ni and supported on pure siliceous SBA-15 was prepared using Keggin-type heteropolyacids (H3PMo12O40 or H3PW12O40) as active phase precursors. These catalysts were compared with corresponding NiMo(W)/SBA-15 catalysts prepared from the traditional precursors (ammonium heptamolybdate, ammonium metatungstate). Prepared catalysts were characterized by N2 physisorption, small- and wide-angle XRD, UV–vis DRS, FT-IR, TPR, 31P MAS NMR, HRTEM and evaluated in hydrodesulfurization of 4,6-dimethyldibenzothiophene (4,6-DMDBT). It was found that both Mo and W catalysts prepared from heteropolyacids showed better performance in deep HDS of 4,6-DMDBT than the counterparts prepared from traditionally used Mo (W) ammonium salts. The possible reasons of this phenomenon are discussed.

Keywords
Ultra-deep hydrodesulfurization; 4,6-DMDBT; SBA-15; Keggin-type heteropolyacid
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Highly active deep HDS catalysts prepared using Mo and W heteropolyacids supported on SBA-15
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 82, Issues 3–4, 8 August 2008, Pages 139–150
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us