Optimization and Kinetic Studies on Hydrogenation of Furfural to Furfuryl Alcohol over SBA-15 Supported Bimetallic Copper–Cobalt Catalyst

Srivastava, Sanjay; Solanki, Naveen; Mohanty, Pravakar; Shah, Krunal A.; Parikh, Jigisha; Dalai, Ajay K.

doi:10.1007/s10562-015-1488-5

Cited by 56 publications

(36 citation statements)

References 24 publications

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“…By contrast, it shows a good linear correlation with P

_{normalH_{2}}

(Figure c), which suggests a first‐order reaction with respect to H 2 . These observations are very consistent with previously reported experimental and theoretical investigations . Therefore, the hydrogenation activity should be mainly associated with the H ads on the Ir surface.…”

Section: Resultssupporting

confidence: 93%

“…By contrast, it shows ag ood linear correlation with P H 2 (Figure 6c), which suggests af irst-order reaction with respectt oH 2 .T hese observations are very consistent with previously reported experimental and theoretical investigations. [42,43] Therefore, the hydrogenation activity should be mainly associated with the H ads on the Ir surface. According to the H 2 -TPD investigation, the Ir/HÀMoO x -400 catalyst with its high H 2 uptake, particularly the moderate chemisorbed H 2 , reasonably contributes to the high activity in FALh ydrogenation.…”

Section: Resultsmentioning

confidence: 99%

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Hydrogen Doping into MoO₃ Supports toward Modulated Metal–Support Interactions and Efficient Furfural Hydrogenation on Iridium Nanocatalysts

Xie

Chen

Chan

et al. 2018

Chemistry An Asian Journal

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As promising supports, reducible metal oxides afford strong metal-support interactions to achieve efficient catalysis, which relies on their band states and surface stoichiometry. In this study, in situ and controlled hydrogen doping (H doping) by means of H spillover was employed to engineer the metal-support interactions in hydrogenated MoO -supported Ir (Ir/H-MoO ) catalysts and thus promote furfural hydrogenation to furfuryl alcohol. By easily varying the reduction temperature, the resulting H doping in a controlled manner tailors low-valence Mo species (Mo and Mo ) on H-MoO supports, thereby promoting charge redistribution on Ir and H-MoO interfaces. This further leads to clear differences in H chemisorption on Ir, which illustrates its potential for catalytic hydrogenation. As expected, the optimal Ir/H-MoO with controlled H doping afforded high activity (turnover frequency: 4.62 min ) and selectivity (>99 %) in furfural hydrogenation under mild conditions (T=30 °C, PH2 =2 MPa), which means it performs among the best of current catalysts.

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“…By contrast, it shows a good linear correlation with P

_{normalH_{2}}

Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Hydrogen Doping into MoO₃ Supports toward Modulated Metal–Support Interactions and Efficient Furfural Hydrogenation on Iridium Nanocatalysts

Xie

Chen

Chan

et al. 2018

Chemistry An Asian Journal

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“…Pure copper showed high selectivity toward furfuryl alcohol . Pure cobalt favored furfuryl alcohol, but 2‐methylfuran selectivity was also prominent at 200 °C and elevated pressures . Pure Pd showed high selectivity toward furan and tetrahydrofurfuryl alcohol, while furfuryl alcohol became a minor product .…”

Section: Resultsmentioning

confidence: 99%

“…[43] Pure cobalt favored furfuryl alcohol, but 2methylfuran selectivity was also prominent at 200°C and elevated pressures. [44][45][46] Pure Pd showed high selectivity toward furan and tetrahydrofurfuryl alcohol, while furfuryl alcohol became a minor product. [11] Bimetallic overlayer catalyst Co@Pd and Cu@Pd showed higher furfuryl alcohol selectivity.…”

Section: Furfural Hydrogenation Reactivitymentioning

confidence: 99%

Kinetics of Furfural Hydrogenation over Bimetallic Overlayer Catalysts and the Effect of Oxygen Vacancy Concentration on Product Selectivity

et al. 2019

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Furfural hydrogenation over silica‐supported Co@Pd and Cu@Pd bimetallic overlayer catalysts was studied in this work. Both overlayer catalysts showed enhanced reactivity compared to pure Pd in furfural hydrogenation. Langmuir‐Hinshelwood kinetic study revealed that this enhanced reactivity could be attributed to the decreased hydrogen surface coverage on catalyst surface of overlayer catalysts compared to pure Pd during reaction, releasing more available active sites for surface reaction or furfural adsorption to take place. The effect of oxygen vacancy concentration on furfural hydrogenation product selectivity was also studied. It is proposed that oxygen vacancies were crucial for both furfural hydrodeoxygenation and aromatic ring hydrogenation, depending on the concentration of oxygen vacancies. This work provides new perspective for tuning the furfural hydrogenation product selectivity by altering the oxygen vacancy concentration.

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“…Compared with Ni‐ or other metallic‐based catalyst, the Cu‐based catalyst possesses moderate catalytic activity and has low tendency to catalyze aromatic or heterocyclic ring which can prevent excessive HDO of reactant to some by‐products, thus improving its selectivity . Up to now, Cu‐based catalysts have been widely used for the HDO reaction, such as Cu/SiO 2 , Cu‐HZSM‐5, CuMgAl, CuZnAl, Cu/MgO, Co‐Cu/SBA‐15, and Cu 30 Cr 10 /γ‐Al 2 O 3 . Lomate et al have studied selective hydrogenation of levulinic acid to γ‐valerolactone over Cu‐SiO 2 catalysts .…”

Section: Introductionmentioning

confidence: 99%

Highly Dispersed Copper Nanoparticles Supported on Activated Carbon as an Efficient Catalyst for Selective Reduction of Vanillin

Fan

Chen

Han

et al. 2018

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Highly dispersed copper nanoparticles (Cu NPs) supported on activated carbon (AC) are effectively synthesized by one-pot carbothermal method at temperature range of 400-700 °C. The X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and Brunauer-Emmett-Teller analysis reveal that Cu NPs with diameters of 20-30 nm are evenly anchored in carbon matrix. The 15 wt%-Cu/AC-600 catalyst (derived at 600 °C) exhibits best bifunctional catalysis of aqueous-phase hydrodeoxygenation (HDO) and organic-phase transfer-hydrogenation reaction (THR) to selectively transform vanillin to 2-methoxy-4-methylphenol (MMP). In HDO of vanillin, the as-prepared catalyst achieves a 99.9% vanillin conversion and 93.2% MMP selectivity under 120 °C, 2.0 MPa H within 5 h. Meanwhile, near-quantitative vanillin conversion and 99.1% MMP selectivity are also obtained under 180 °C within 5 h in THR of vanillin by using 2-propanol as hydrogen donor. The transforming pathways of vanillin are also proposed: vanillin is transformed into MMP via intermediate of 4-hydroxymethyl-2-methoxyphenol in HDO case and by direct hydrogenolysis of vanillin in THR course. More importantly, the activity and the selectivity do not change after 5 cycles, indicating the catalyst has excellent stability. The Cu-based catalyst is relatively cheap and preparation method is facile, green, and easy scale-up, thus achieving a low-cost transformation of biomass to bio-oils and chemicals.

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Optimization and Kinetic Studies on Hydrogenation of Furfural to Furfuryl Alcohol over SBA-15 Supported Bimetallic Copper–Cobalt Catalyst

Cited by 56 publications

References 24 publications

Hydrogen Doping into MoO₃ Supports toward Modulated Metal–Support Interactions and Efficient Furfural Hydrogenation on Iridium Nanocatalysts

Hydrogen Doping into MoO₃ Supports toward Modulated Metal–Support Interactions and Efficient Furfural Hydrogenation on Iridium Nanocatalysts

Kinetics of Furfural Hydrogenation over Bimetallic Overlayer Catalysts and the Effect of Oxygen Vacancy Concentration on Product Selectivity

Highly Dispersed Copper Nanoparticles Supported on Activated Carbon as an Efficient Catalyst for Selective Reduction of Vanillin

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Optimization and Kinetic Studies on Hydrogenation of Furfural to Furfuryl Alcohol over SBA-15 Supported Bimetallic Copper–Cobalt Catalyst

Cited by 56 publications

References 24 publications

Hydrogen Doping into MoO3 Supports toward Modulated Metal–Support Interactions and Efficient Furfural Hydrogenation on Iridium Nanocatalysts

Hydrogen Doping into MoO3 Supports toward Modulated Metal–Support Interactions and Efficient Furfural Hydrogenation on Iridium Nanocatalysts

Kinetics of Furfural Hydrogenation over Bimetallic Overlayer Catalysts and the Effect of Oxygen Vacancy Concentration on Product Selectivity

Highly Dispersed Copper Nanoparticles Supported on Activated Carbon as an Efficient Catalyst for Selective Reduction of Vanillin

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Hydrogen Doping into MoO₃ Supports toward Modulated Metal–Support Interactions and Efficient Furfural Hydrogenation on Iridium Nanocatalysts

Hydrogen Doping into MoO₃ Supports toward Modulated Metal–Support Interactions and Efficient Furfural Hydrogenation on Iridium Nanocatalysts