Selective hydrogenation of CO2 to methanol over Ni/In2O3 catalyst

Jia, Xinyu; Sun, Kaihang; Wang, Jing; Shen, Chenyang; Liu, Changjun

doi:10.1016/j.jechem.2020.03.083

Cited by 191 publications

(157 citation statements)

References 45 publications

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“…A similar mechanism of metal promotion was reported for other metal-promoted In 2 O 3 catalysts. 42 , 43 , 49 , 77 For example, a detailed study from Perez-Ramirez’s group 43 emphasized the role of finely dispersed Pd clusters in the H 2 activation and the role of H atoms in the following hydrogenation steps of adsorbed CO 2 . We also briefly discuss here our results in comparison to those recently reported by Frei et al, who prepared Ni/In 2 O 3 catalysts by dry impregnation.…”

Section: Resultsmentioning

confidence: 99%

“…Specifically, the activity of the optimum NiO–In 2 O 3 catalyst in this study is about 4 times higher than that of the In 2 O 3 reference catalyst, while the synergetic effect is less pronounced in other studies of Ni-promoted In 2 O 3 catalysts. 49 , 50 , 78 As shown in Table S4 , the NiO(6)–In 2 O 3 catalyst in this study is compared to other Ni-promoted In 2 O 3 catalysts with respect to their performance in CO 2 hydrogenation. To make such a comparison, we also performed additional catalytic tests at higher temperatures (275 and 300 °C) using the NiO(6)–In 2 O 3 catalyst.…”

Section: Resultsmentioning

confidence: 99%

“…They suggested that the Ni promotion is associated with highly dispersed Ni species in strong interaction with In 2 O 3 . 49 In a recent report, Frei et al studied Ni-promoted In 2 O 3 in detail for CO 2 hydrogenation, highlighting the formation of highly dispersed InNi 3 layers on In 2 O 3 . 50 …”

Section: Introductionmentioning

confidence: 99%

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Ni–In Synergy in CO₂ Hydrogenation to Methanol

et al. 2021

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Indium oxide (In 2 O 3 ) is a promising catalyst for selective CH 3 OH synthesis from CO 2 but displays insufficient activity at low reaction temperatures. By screening a range of promoters (Co, Ni, Cu, and Pd) in combination with In 2 O 3 using flame spray pyrolysis (FSP) synthesis, Ni is identified as the most suitable first-row transition-metal promoter with similar performance as Pd–In 2 O 3 . NiO–In 2 O 3 was optimized by varying the Ni/In ratio using FSP. The resulting catalysts including In 2 O 3 and NiO end members have similar high specific surface areas and morphology. The main products of CO 2 hydrogenation are CH 3 OH and CO with CH 4 being only observed at high NiO loading (≥75 wt %). The highest CH 3 OH rate (∼0.25 g MeOH /(g cat h), 250 °C, and 30 bar) is obtained for a NiO loading of 6 wt %. Characterization of the as-prepared catalysts reveals a strong interaction between Ni cations and In 2 O 3 at low NiO loading (≤6 wt %). H 2 -TPR points to a higher surface density of oxygen vacancy (O v ) due to Ni substitution. X-ray photoelectron spectroscopy, X-ray absorption spectroscopy, and electron paramagnetic resonance analysis of the used catalysts suggest that Ni cations can be reduced to Ni as single atoms and very small clusters during CO 2 hydrogenation. Supportive density functional theory calculations indicate that Ni promotion of CH 3 OH synthesis from CO 2 is mainly due to low-barrier H 2 dissociation on the reduced Ni surface species, facilitating hydrogenation of adsorbed CO 2 on O v .

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Ni–In Synergy in CO₂ Hydrogenation to Methanol

et al. 2021

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“…Carbon dioxide (CO 2 ), as a major greenhouse gas, is being blamed for the ecological troubles. On the other hand, CO 2 also serves as an ideal C1 source, and catalytic CO 2 hydrogenation offers an effective strategy for the transformation of CO 2 into high value-added chemicals [1][2][3] and fuels [4][5][6] by which the global carbon cycle can be sustained simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Tuning selectivity of CO₂ hydrogenation by modulating the strong metal–support interaction over Ir/TiO₂ catalysts

Zhang

Yang

et al. 2020

Green Chem.

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“…Since then, In 2 O 3 -based catalysts have received significant attention, with increasing publications. The reported works include preparation and characterization of In 2 O 3 [12]; combination of In 2 O 3 with other oxides [13,14], especially ZrO 2 that forms the solid solution with In 2 O 3 and improves CO 2 adsorption with optimum oxygen vacancy [15][16][17] and generates strong electronic interaction between oxides [18]; and the addition of metals, including gold [19,20], copper [21,22], cobalt [23], palladium [24][25][26][27], rhodium [28], nickel [29], and platinum [30,31]. The metal catalysts applied significantly improve the hydrogenation ability of In 2 O 3 .…”

Section: Introductionmentioning

confidence: 99%