Study of bimetallic Cu–Ni/γ-Al2O3 catalysts for carbon dioxide hydrogenation

Liu, Yan; Liu, Dazhuang

doi:10.1016/s0360-3199(98)00038-x

Cited by 99 publications

(44 citation statements)

References 7 publications

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“…These results with the CuNi/YSZ and CuNi/SDC catalysts were completely consistent with previous work using CuNi/C and CuNi/Al 2 O 3 catalysts [24]. CO and CH 4 were the expected products with pure copper catalysts [9,11,14,26] and pure nickel catalysts [14], respectively. The absence of CH 4 in this work might have been caused by the enhanced copper concentration on the catalyst surface.…”

Section: Catalytic Performancesupporting

confidence: 91%

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Use of CuNi/YSZ and CuNi/SDC Catalysts for the Reverse Water Gas Shift Reaction

Lortie

Isaifan

2015

Journal of Catalysts

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Cu 50 Ni 50 nanoparticles were synthesized using a modified polyol method and deposited on samarium-doped ceria, SDC, and yttria-stabilized zirconia, YSZ, supports to form reverse water-gas shift, RWGS, catalysts. The best CO yields, obtained with the Cu 50 Ni 50 /SDC catalyst, were about 90% of the equilibrium CO yields. In contrast CO yields using Pt/SDC catalysts were equal to equilibrium CO yields at 700 ∘ C. Catalyst selectivity to CO was 100% at hydrogen partial pressures equal to CO 2 partial pressures, 1 kPa, and decreased as methane was formed when the hydrogen partial pressure was 2 kPa or greater. The reaction results were explained using a combination of Eley-Rideal and Langmuir-Hinshelwood mechanisms that involved adsorption on the metal surface and the concentration of oxygen vacancies in the support. Finally the Cu 50 Ni 50 /SDC catalyst was found to be thermally stable for 48 hours at 600/700 ∘ C.

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Section: Catalytic Performancesupporting

confidence: 91%

“…Liu and D. Liu [14] made a bimetallic Ni and Cu catalyst and used it for the RWGS reaction. Their research was aimed at examining the effect of both metals on selectivity for the RWGS reaction.…”

Section: Introductionmentioning

confidence: 99%

Use of CuNi/YSZ and CuNi/SDC Catalysts for the Reverse Water Gas Shift Reaction

Lortie

Isaifan

2015

Journal of Catalysts

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“…Liu et al have developed a series of bimetallic Cu-Ni/g-Al 2 O 3 catalysts for CO 2 hydrogenation. 33 The ratio of Cu/Ni has a significant effect on conversion and selectivity. Cu favors CO formation, while Ni is active for CH 4 production.…”

Section: Metal-based Heterogeneous Catalystsmentioning

confidence: 99%

Recent advances in catalytic hydrogenation of carbon dioxide

et al. 2011

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Owing to the increasing emissions of carbon dioxide (CO 2 ), human life and the ecological environment have been affected by global warming and climate changes. To mitigate the concentration of CO 2 in the atmosphere various strategies have been implemented such as separation, storage, and utilization of CO 2 . Although it has been explored for many years, hydrogenation reaction, an important representative among chemical conversions of CO 2 , offers challenging opportunities for sustainable development in energy and the environment. Indeed, the hydrogenation of CO 2 not only reduces the increasing CO 2 buildup but also produces fuels and chemicals. In this critical review we discuss recent developments in this area, with emphases on catalytic reactivity, reactor innovation, and reaction mechanism. We also provide an overview regarding the challenges and opportunities for future research in the field (319 references).

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“…The reduction band of 10Ni10Cu appearing at 240 C is due to the reduction of copper oxide and the reduction temperature closes to the temperature of 5Cu. From the reduction band of 10Ni5Cu at 190 C, therefore, it is inferred that the 10Ni5Cu catalyst retains an intermediate state of Cu species between copper aluminate and copper oxide (Lee et al 2004;Liu and Liu 1999;Mariño et al 2003). This result implies that Cu species are segregated from copper aluminate to copper oxide with increasing Cu content.…”

Section: Steam Reforming Of Bio-ethanol 95mentioning

confidence: 99%

Production of Hydrogen by Steam Reforming of Bio-Ethanol Over Nickel-Copper Bimetallic Catalysts

Wang

2009

International Journal of Green Energy

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In the present study, nickel-copper bimetallic catalysts were investigated for the steam reforming of bio-ethanol. A comparison was made to the 10% nickel and the different content of copper supported on g -Al 2 O 3 promoted by MgO. Experimental results showed that the 10Ni5Cu/MgO/g -Al 2 O 3 catalyst was superior to other catalysts, especially in terms of the hydrogen-to-carbon monoxide ratio. Influential factors, such as reaction temperature, water-to-ethanol molar ratio, and liquid hourly space velocity (LHSV), were investigated using the 10Ni5Cu/MgO/g -Al 2 O 3 catalyst. The conversions were always completed at temperatures above 400 C, regardless of the changes of the reaction conditions. However, the yield to hydrogen increased with the increase in temperature and H 2 O/C 2 H 5 OH molar ratio. The hydrogen yield up to 71% was reached under these conditions: 550 C, LHSV of 5.0 h -1 , and H 2 O/C 2 H 5 OH ratio of 10 over the 10Ni5Cu/MgO/g -Al 2 O 3 catalyst. The effects of the influential factors on the side reactions and the distribution of by-products were also discussed.

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Study of bimetallic Cu–Ni/γ-Al2O3 catalysts for carbon dioxide hydrogenation

Cited by 99 publications

References 7 publications

Use of CuNi/YSZ and CuNi/SDC Catalysts for the Reverse Water Gas Shift Reaction

Use of CuNi/YSZ and CuNi/SDC Catalysts for the Reverse Water Gas Shift Reaction

Recent advances in catalytic hydrogenation of carbon dioxide

Production of Hydrogen by Steam Reforming of Bio-Ethanol Over Nickel-Copper Bimetallic Catalysts

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