ChemInform Abstract: Catalytic Functionalities of Supported Sulfides. Part I. Effect of Support and Additives on the CoMo Catalyst. Part 2. Effect of Support on Mo Dispersion

Description of coordinatively unsaturated sites regeneration over MoS2-based HDS catalysts using 35S experiments combined with computer simulations

“…Indeed, its presence in the exhaust gas as SO 2 is not only responsible for allergies and respiratory disorders such as asthma, but it is also a poison for the catalytic exhaust converters, decreasing progressively their efficiency. Facing this environmental problem, laws limiting the sulfur emissions were early established; they have to be further regularly revised in order to meet more and more exigent environmental protection standards.…”

“…For instance, from 1997, the maximum sulfur content in light gas oils was and optionally further modified with third doping elements, e.g. fluorine [2,3], phosphorus [4][5][6][7][8][9] or boron [10][11][12][13][14]. In addition, other active phases such as WS 2 [15][16][17][18][19], CrS x [20][21][22][23][24], noble metals [25][26][27][28][29][30][31][32][33][34][35][36][37], as well as other supports than alumina such as TiO 2 or mixed oxides [38][39][40][41][42][43][44][45][46][47][48] or carbon [49] and zeolites …”

Characterization and hydrodesulfurization activity of CoMo catalysts supported on boron-doped sol–gel alumina

“…NiMoS phase might be achieved by the use of newly developed supports such as TiO 2 or mixed oxides, carbon, or zeolites, and/or by doping with third elements such as fluorine, phosphorus, or boron [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. Recently, we reported that fine-tuning of the physical and chemical properties of γ-Al 2 O 3 supports by sol-gel synthesis improves the catalytic HDS performance of CoMo catalysts [29][30][31].…”

Promoting effects in hydrogenation and hydrodesulfurization reactions on the zirconia and titania supported catalysts

“…Concerning for example titania, Okamoto et al [1], MuraliDhar et al [2], and Shimada et al [3] reported higher HDS activity, but lower HYD performance of TiO 2 compared to Al 2 O 3 systems, whereas Harlé et al [4] found that the intrinsic tetralin HYD activity of titania supported systems is higher than on alumina; Lecrenay et al [5] us-ing TiO 2 -containing supports found increased activity in the naphthalene HYD. The reason of discrepancy might be that the similar catalysts are prepared using different precursors, or different calcination, drying and activation conditions.…”