CO2 Hydrogenation on NixMg1−xAl2O4: A Comparative Study of MgAl2O4 and NiAl2O4

Published on Aug 24, 2021in Catalysts4.146
· DOI :10.3390/CATAL11091026
Boseok Seo , Eunhee Ko + 3 AuthorsNo-Kuk Park18
Estimated H-index: 18
#1Shuangshuang Zhang (ECUST: East China University of Science and Technology)H-Index: 1
#2Ming Ying (ECUST: East China University of Science and Technology)H-Index: 1
Last. Yanglong Guo (ECUST: East China University of Science and Technology)H-Index: 65
view all 7 authors...
Abstract The structure evolution of surface NiAl2O4 spinel phase in NixAl1O2-δ mesoporous catalysts, synthesized by the citric acid sol-gel method, was systematically investigated. Small-size Ni nanoparticles, obtained by partial reduction from NiAl2O4 spinel in NixAl1O2-δ catalysts with low Ni contents at high temperature, can effectively inhibit the carbon formation from kinetics, while the irreducible NiAl2O4 counterpart can participate in elimination of carbon deposition. The constructed str...
CO2 hydrogenation activity of nickel-magnesium-aluminum mixed oxide catalysts was investigated. As Ni concentration increased, CO2 conversion increased due to the increased active metal content and suppression of NiAl2O4 formation. Calcination temperature was found to affect the textural properties of catalysts and to decrease surface area and pore volume significantly. Therefore, catalysts calcined at a relatively low temperature showed high activity, while the particle strength slightly decrea...
#1Thalita S. Galhardo (USP: University of São Paulo)H-Index: 6
#2Adriano H. Braga (USP: University of São Paulo)H-Index: 9
Last. Liane M. Rossi (USP: University of São Paulo)H-Index: 47
view all 8 authors...
Controlling the selectivity of CO2 hydrogenation catalysts is a fundamental challenge. In this study, the selectivity of supported Ni catalysts prepared by the traditional impregnation method was f...
#1Wei Shen (UNSW: University of New South Wales)H-Index: 3
#2Xi Chen (UNSW: University of New South Wales)H-Index: 3
Last. Zhao Yang Dong (UNSW: University of New South Wales)H-Index: 85
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Abstract Levelized cost of electricity (LCOE) is widely used to compare the cost of different electricity generation technologies. However, with the increasing penetration of variable renewable energy (VRE), it is inappropriate to use traditional equations to calculate the LCOE for non-dispatchable VRE due to its intermittent nature. Therefore, this paper reviews LCOE for renewable generation considering aspects such as improving traditional methods for evaluating and reducing the LCOE of VRE. T...
#1Leila Karam (University of Balamand)H-Index: 7
#2M. Carmen Bacariza (IST: Instituto Superior Técnico)H-Index: 4
Last. Nissrine El Hassan (University of Balamand)H-Index: 11
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Abstract Mesoporous xNi-yMg-Al2O3 catalysts prepared by combined evaporation induced self-assembly (EISA) and one-pot techniques were tested in CO2 methanation reaction. All calcined/reduced materials were characterized by X-ray fluorescence (XRF), X-ray diffraction (XRD), N2 physisorption, thermogravimetric analysis (TGA), CO2 adsorption, H2 temperature programmed reduction (H2-TPR) and transmission electron microscopy (TEM). The effects of Mg and Ni loadings on the catalysts properties and per...
#1Jose A. Hernandez Lalinde (McGill University)H-Index: 4
#2Pakpong Roongruangsree (McGill University)H-Index: 1
Last. Jan Kopyscinski (McGill University)H-Index: 16
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Abstract The reaction kinetics for the CO2 methanation and reverse water gas shift reaction over an ordered-mesoporous Ni/Al2O3 catalyst were determined. For the parameter estimation and model discrimination, the kinetic data were obtained by means of spatially-resolved measurement in a catalytic plate reactor. In detail, ∼21,000 high-resolution gas composition data were gathered along the reactor axis using a movable sampling capillary connected to a mass spectrometer. Additionally, the catalys...
#1Alex C. Schilling (Tufts University)H-Index: 6
#2Kyle Groden (WSU: Washington State University)H-Index: 5
Last. Iradwikanari Waluyo (BNL: Brookhaven National Laboratory)H-Index: 21
view all 9 authors...
The reducibility of metal oxides, when serving as the catalyst support or the active sites themselves, plays an important role in heterogeneous catalytic reactions. For example, in the production o...
#1Johann KirchnerH-Index: 4
#2Zeynep BaysalH-Index: 2
Last. Sven KuretiH-Index: 23
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#1Charlotte Vogt (UU: Utrecht University)H-Index: 9
#2Matteo Monai (UU: Utrecht University)H-Index: 23
Last. Bert M. Weckhuysen (UU: Utrecht University)H-Index: 116
view all 13 authors...
Carbon dioxide is a desired feedstock for platform molecules, such as carbon monoxide or higher hydrocarbons, from which we will be able to make many different useful, value-added chemicals. Its catalytic hydrogenation over abundant metals requires the amalgamation of theoretical knowledge with materials design. Here we leverage a theoretical understanding of structure sensitivity, along with a library of different supports, to tune the selectivity of methanation in the Power-to-Gas concept over...
#1Dolf Gielen (Colorado School of Mines)H-Index: 30
#2Francisco BoshellH-Index: 3
Last. Ricardo GoriniH-Index: 3
view all 6 authors...
Abstract This paper explores the technical and economic characteristics of an accelerated energy transition to 2050, using new datasets for renewable energy. The analysis indicates that energy efficiency and renewable energy technologies are the core elements of that transition, and their synergies are likewise important. Favourable economics, ubiquitous resources, scalable technology, and significant socio-economic benefits underpin such a transition. Renewable energy can supply two-thirds of t...
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