Novel hydrodesulfurization catalysts derived from a rhodium carbonyl complex

Lee, Jeayoung; Ishihara, Atsushi; Dumeignil, Franck; Miyazaki, Koichi; Oomori, Yuji; Qian, Eika W.; Kabe, Toshiaki

doi:10.1016/j.molcata.2003.08.020

Cited by 20 publications

(11 citation statements)

References 30 publications

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“…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 [50,51] were also investigated, giving a large pallet of a...…”

Section: Introductionmentioning

confidence: 99%

“…Besides, 35 S radioactive tracer methods were developed to determine the sulfidation process of HDS catalysts as well as to describe the HDS reaction mechanism over various catalysts under real working conditions [32,34,35,[73][74][75][76][77][78][79][80]. On the other hand, with the recent developments of the computer simulations, new insights in the state of the HDS catalysts surface [81][82][83][84] as well as an overview of the HDS mechanism over the simulated surfaces were concurrently proposed [85,86].…”

Section: Introductionmentioning

confidence: 99%

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

Dumeignil

Paul²,

Veilly³

et al. 2005

Applied Catalysis A: General

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Dumeignil

Paul²,

Veilly³

et al. 2005

Applied Catalysis A: General

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“…The performance of these CoMo-and NiMo-based catalysts can be improved by adding further elements such as fluorine 3) , phosphorus 4) or boron 4), 5) . The use of other active phases such as WS2 6) , CrSx 7), 8) , noble metals 9) 15) , as well as other carriers such as TiO2 or mixed oxides 16) 21) or carbon 22) and zeolites 23) has also been investigated. The sol-gel method enables the preparation of porous materials with fine structure and polycrystalline materials with uniform composition from more than one component at low temperature.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Alumina-supported Cobalt–molybdenum Catalysts by Sol-gel Method and Hydrodesulfurization Activities

石原

田中

愛葉

et al. 2015

J. Jpn. Petrol. Inst.

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Al2O3-supported Co and Mo catalysts were prepared by the sol-gel method, in which Co and/or Mo species were added at the hydrolysis of Al tri-s-butoxide. XRD patterns, N2 adsorption and desorption, amounts of NO adsorption and NO species by FT-IR were measured to characterize the catalysts. Catalysts with active components Co and Mo separately supported by the sol-gel method had higher activity for hydrodesulfurization of dibenzothiophene. Mo _ Co/Al2O3, in which Mo species was supported on Co/Al2O3 by the sol-gel method, showed the highest activities at lower temperature, indicating that the Co species was effectively dispersed on Al2O3 during the preparation of Co/Al2O3. Catalysts in which Co and Mo species were simultaneously supported had lower activity, indicating that both Co and Mo species were dispersed and reduced interaction between Co and Mo. Co _ Mo/sol-gelAl2O3, with the Co species supported on Mo/sol-gelAl2O3, showed the highest activity among sol-gelAl2O3 supported CoMo catalysts, indicating that the Mo species was effectively dispersed during the preparation of Mo/sol-gelAl2O3. Biphenyl was selectively obtained. NO adsorption measurement showed that the amount of NO adsorbed was almost same for Mo _ Co/Al2O3 sulfided once or twice. In contrast, sol-gel CoMo/Al2O3, with the Co and Mo added simultaneously by the sol-gel method, showed significant decrease in NO adsorption after second sulfiding, which would be related to the lower stability of sol-gelCoMo/Al2O3 prepared by the sol-gel method. Al2O3-supported Co _ Mo catalysts prepared using the sol-gel method had relatively high surface areas (282-544 m 2 /g) and relatively smaller pore sizes (3.7-6.3 nm).

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“…Rh sulfide supported over ZSM-5 zeolite was studied by Sugioka et al [3]. The HDS of light gas oil and of dibenzothiophene over alumina supported noble metals was studied by Ishihara et al [4] and Lee et al [5] and a high activity of the Rh catalyst was observed. The behavior of Rh/c-Al 2 O 3 in simultaneous HDS and hydrogenation was described by Giraldo et al [6].…”

Section: Introductionmentioning

confidence: 99%

Support effect in the hydrodesulfurization of thiophene over rhodium sulfide

Kaluža

Vı́t

Zdražil

2010

Reac Kinet Mech Cat

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The effect of support on thiophene hydrodesulfurization activity over rhodium sulfide was studied. The loading was 5 wt% and the supports were (surface areas S BET in m 2 g -1 in parenthesis): C (1100), Nb 2 O 5 (99), ZrO 2 (108), TiO 2 (140), SiO 2 (289), MgO (300) and 11 Al 2 O 3 (77-279). The activity at 400°C decreased in the order (relative activity in parenthesis): C (4.44), Al 2 O 3 (0.98-0.32), Nb 2 O 5 (0.54), ZrO 2 (0.50), TiO 2 (0.48), SiO 2 (0.26), MgO (0.19), commercial CoMo/Al 2 O 3 (1.00). The activity did not correlate with S BET , point of zero charge PZC of the support and the ratio S/Rh in the presulfided catalysts. The broad range of activities of Rh/Al 2 O 3 illustrate that secondary factors such as S BET , texture, PZC, impurities and additives might be as important as the principal type of the support.

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Novel hydrodesulfurization catalysts derived from a rhodium carbonyl complex

Cited by 20 publications

References 30 publications

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

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

Preparation of Alumina-supported Cobalt–molybdenum Catalysts by Sol-gel Method and Hydrodesulfurization Activities

Support effect in the hydrodesulfurization of thiophene over rhodium sulfide

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