CoMo/carbon hydrodeoxygenation catalysts: influence of the hydrogen sulfide partial pressure and of the sulfidation temperature

Ferrari, M.; Bosmans, S.; Maggi, R.; Delmon, Bernard; Grange, Paul

doi:10.1016/s0920-5861(00)00559-9

Cited by 100 publications

(45 citation statements)

References 18 publications

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“…Guaiacol (2-methoxyphenol) has been widely used as a lignin model compound to elucidate the mechanism and assess the efficiency of HDO catalysts. Different active phases, including metal sulfides [4][5][6][7][8][9][10] and metals [11][12][13][14][15][16][17][18], have been investigated as catalysts for the HDO of guaiacol. Other non-traditional catalysts such as ReS 2 catalysts [19,20] and Mo 2 N catalysts [21,22] have also been utilized, and have exhibited similar trends in selectivities.…”

Section: Introductionmentioning

confidence: 99%

Hydrodeoxygenation of 2-methoxyphenol over different Re active phases supported on SiO 2 catalysts

Leiva

Martínez

Sepúlveda

et al. 2015

Applied Catalysis A: General

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Section: Introductionmentioning

confidence: 99%

Hydrodeoxygenation of 2-methoxyphenol over different Re active phases supported on SiO 2 catalysts

Leiva

Martínez

Sepúlveda

et al. 2015

Applied Catalysis A: General

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“…Various catalytic systems have been reported in the literature [2,7]. Among the most prominent classes of catalysts are CoMo-and NiMo-based hydrodesulfurization catalysts and Ni-based systems [8][9][10]. Although these catalysts are attractive, as they are rather inexpensive, they often exhibit a lower activity than supported noble metal catalysts [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Continuous Catalytic Hydrodeoxygenation of Guaiacol over Pt/SiO2 and Pt/H-MFI-90

et al. 2015

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Hydrodeoxygenation of guaiacol in the presence of 1-octanol was studied in a fixed-bed reactor under mild conditions (50-250 °C) over platinum particles supported on silica (Pt/SiO2) and a zeolite with framework type MFI at a Si/Al-ratio of 45 (Pt/H-MFI-90). The deoxygenation selectivity strongly depended on the support and the temperature. Both guaiacol and octanol were rapidly deoxygenated in the presence of hydrogen over Pt/H-MFI-90 at 250 °C to cyclohexane and octane, respectively. In contrast, Pt/SiO2 mostly showed hydrogenation, but hardly any deoxygenation activity. The acidic sites of the MFI-90 support lead to improved deoxygenation performance at the mild temperature conditions of this study. Significant conversions under reaction conditions applied already occurred at temperatures of 200 °C. However, during long-term stability tests, the Pt/H-MFI-90 catalyst deactivated after more than 30 h, probably due to carbon deposition, whereas Pt/SiO2 was more stable. The catalytic activity of the zeolite catalyst could only partly be regained by calcination in air, as some of the acidic sites were lost. OPEN ACCESSCatalysts 2015, 5 1153

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“…The majority of catalysts for the HDO reaction were sulfided Mo [3,4], Ni-Mo [5][6][7][8][9][10], Co-Mo [11][12][13][14][15][16][17][18] unsupported catalysts and their alumina-supported forms. Some researchers have studied the atomic ratios of major elements on pre-reaction and post-reaction sulfided Ni-Mo catalyst and confirmed that the cause of sulfided catalysts deactivation was the destruction of sulfided structure [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…Some researchers have studied the atomic ratios of major elements on pre-reaction and post-reaction sulfided Ni-Mo catalyst and confirmed that the cause of sulfided catalysts deactivation was the destruction of sulfided structure [19][20][21]. Due to the very low content of sulfur in the bio-oil, an additional sulfiding agent was required to be added in the HDO of bio-oil to maintain the level of sulfided structure [6,7,14,15].…”

Section: Introductionmentioning

confidence: 99%

Characterization and hydrodeoxygenation properties of Co promoted Ni–Mo–B amorphous catalysts: influence of Co content

Wang

Yang

Luo

et al. 2010

Reac Kinet Mech Cat

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Different contents of promoter (Co) in Co-Ni-Mo-B amorphous catalysts were prepared by chemical reduction of the precursors of metal salts with a sodium borohydride aqueous solution. The catalysts were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Adding a proper content of the promoter Co into Ni-Mo-B amorphous catalyst could increase the MoO 2 content and decrease the particle size, but doping excess Co would cover some of the active sites and increase the particle size of the catalysts. The effect of Co content on the catalytic hydrodeoxygenation activity of the amorphous catalysts was studied using phenol as a model compound. The main route for the HDO of phenol on these amorphous catalysts was hydrogenation-dehydration and the content of aromatic compounds in HDO products was decreased obviously. The pseudo first-order reaction rate constant of the phenol HDO on Co-Ni-Mo-B amorphous catalyst was much greater than that of MoS 2 when adding proper promoter Co.

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CoMo/carbon hydrodeoxygenation catalysts: influence of the hydrogen sulfide partial pressure and of the sulfidation temperature

Cited by 100 publications

References 18 publications

Hydrodeoxygenation of 2-methoxyphenol over different Re active phases supported on SiO 2 catalysts

Hydrodeoxygenation of 2-methoxyphenol over different Re active phases supported on SiO 2 catalysts

Continuous Catalytic Hydrodeoxygenation of Guaiacol over Pt/SiO2 and Pt/H-MFI-90

Characterization and hydrodeoxygenation properties of Co promoted Ni–Mo–B amorphous catalysts: influence of Co content

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