Preparation of CoMo/Al2O3, CoMo/CeO2, CoMo/TiO2 catalysts using ultrasonic spray pyrolysis for the hydro-desulfurization of 4, 6-dimethyldibenzothiophene for fuel cell applications

Kim, Hyun Koo; Lee, Chang Whan; Kim, Min‐Soo; Oh, Joo Hyeng; Song, Shin Ae; Jang, Seong Cheol; Yoon, Chang Won; Han, Jonghee; Yoon, Sung Pil; Nam, Suk Woo; Choi, Dae Ki; Shul, Yong Gun; Ham, Hyung Chul

doi:10.1016/j.ijhydene.2016.06.040

Cited by 12 publications

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“…Considering the similar metal content of all catalysts, the great improvement of activity with increasing CeO 2 content clearly indicates the positive effect of CeO 2 on the HDS activity of sulfided NiMoW/Al-Ce( x ) catalysts. Our activity results are in line with the study by Kim et al [ 59 ], indicating the higher hydrodesulfurization activity of CoMo/CeO 2 with respect to CoMo/Al 2 O 3 .…”

Section: Resultssupporting

confidence: 93%

Hydrodesulfurization of Dibenzothiophene over Ni-Mo-W Sulfide Catalysts Supported on Sol-Gel Al2O3-CeO2

et al. 2022

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To achieve sulfur content in gas oil at a near-zero level, new catalysts with improved hydrogenation functions are needed. In this work, new Ni-Mo-Mo hydrodesulfurization (HDS) catalysts supported by Al2O3-CeO2 materials were synthesized to evaluate their efficiency in the reaction of HDS with dibenzothiophene (DBT). Al2O3-CeO2 supports different CeO2 loadings (0, 5, 10 and 15 wt.%) and supported NiMoW catalysts were synthesized by sol-gel and impregnation methods, respectively. The physicochemical properties of the supports and catalysts were determined by a variety of techniques (chemical analysis, XRD, N2 physisorption, DRS UV-Vis, XPS, and HRTEM). In the DBT HDS reaction carried out in a batch reactor at 320 °C and a H2 pressure of 5.5 MPa, the sulfide catalysts showed a dramatic increase in activity with increasing CeO2 content in the support. Nearly complete DBT conversion (97%) and enhanced hydrogenation function (HYD) were achieved on the catalyst with the highest CeO2 loading. The improved DBT conversion and selectivity towards the hydrogenation products (HYD/DDS ratio = 1.6) of this catalyst were attributed to the combination of the following causes: (i) the positive effect of CeO2 in forcing the formation of the onion-shaped Mo(W)S2 layers with a large number of active phases, (ii) the inhibition of the formation of the undesired NiAlO4 spinel phase, (iii) the appropriate textural properties, (iv) the additional ability for heterolytic dissociation of H2 on the CeO2 surfaces, and (v) the increase in Brønsted acidity.

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Section: Resultssupporting

confidence: 93%

Hydrodesulfurization of Dibenzothiophene over Ni-Mo-W Sulfide Catalysts Supported on Sol-Gel Al2O3-CeO2

et al. 2022

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“…30) catalysts exhibit catalytic activity for DRM under conventional heating. Meanwhile, Co-Mo/ Al 2 O 3 has been extensively investigated as an efficient catalyst for several processes such as hydrodesulfurization, [31][32][33][34] hydrotreatment, 35,36 syngas conversion, 37 and natural gas decomposition. 27 Nonetheless, a highly efficient Co-Mo/Al 2 O 3 catalyst for DRM, particularly under MW irradiation, has not been reported.…”

Section: Introductionmentioning

confidence: 99%

Dry reforming of methane over Co–Mo/Al₂O₃ catalyst under low microwave power irradiation

Nguyen

Pham

Ran

et al. 2018

Catal. Sci. Technol.

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Selective Sulfur Removal from Liquid Fuels Using Nanostructured Adsorbents

Iruretagoyena

Montesano

2017

Nanotechnology in Oil and Gas Industries

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Preparation of CoMo/Al2O3, CoMo/CeO2, CoMo/TiO2 catalysts using ultrasonic spray pyrolysis for the hydro-desulfurization of 4, 6-dimethyldibenzothiophene for fuel cell applications

Cited by 12 publications

References 20 publications

Hydrodesulfurization of Dibenzothiophene over Ni-Mo-W Sulfide Catalysts Supported on Sol-Gel Al2O3-CeO2

Hydrodesulfurization of Dibenzothiophene over Ni-Mo-W Sulfide Catalysts Supported on Sol-Gel Al2O3-CeO2

Dry reforming of methane over Co–Mo/Al₂O₃ catalyst under low microwave power irradiation

Selective Sulfur Removal from Liquid Fuels Using Nanostructured Adsorbents

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Preparation of CoMo/Al2O3, CoMo/CeO2, CoMo/TiO2 catalysts using ultrasonic spray pyrolysis for the hydro-desulfurization of 4, 6-dimethyldibenzothiophene for fuel cell applications

Cited by 12 publications

References 20 publications

Hydrodesulfurization of Dibenzothiophene over Ni-Mo-W Sulfide Catalysts Supported on Sol-Gel Al2O3-CeO2

Hydrodesulfurization of Dibenzothiophene over Ni-Mo-W Sulfide Catalysts Supported on Sol-Gel Al2O3-CeO2

Dry reforming of methane over Co–Mo/Al2O3 catalyst under low microwave power irradiation

Selective Sulfur Removal from Liquid Fuels Using Nanostructured Adsorbents

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Dry reforming of methane over Co–Mo/Al₂O₃ catalyst under low microwave power irradiation