One-pot prepared mesoporous silica SBA-15-like monoliths with embedded Ni particles as selective and stable catalysts for methane dry reforming

Abstract The ordered mesoporous Mg- and Ni-Mg-alumina samples of general formula xwt%Mg-Al2O3 and ywt%Nixwt% Mg-Al2O3(x, y = 5, 10 % wt) have been prepared by the one-pot evaporation induced self-assembly (EISA) method using Pluronic P123 as a template. The textural and structural properties of the prepared samples have been characterized by N2adsorption-desorption analysis, BET, XRD, TEM with EDX, HAADF-STEM, and H2-TPR. The samples calcined at 700°C had an ordered mesoporous structure with a SSA of 170-250 m2/g, a pore volume of 0.5-0.64 cm3/g and a narrow distribution of the pore size (mean 12-16 nm). For the catalysts prepared by the one-pot EISA method, the size of the metal Ni particles was in the range of 3-12 nm and was conditioned by their confinement in the mesopores and the interaction with MgO and Al2O3. Testing in methane dry reforming in the 15v.% CH4+ 15v.%CO2feed, with He balance, at 650-750°C and the contact time of 0.015 s has shown the higher activity and stability of the ordered mesoporous 10w%Ni- 10w%Mg-Al2O3catalysts prepared by the one-pot method as compared with the catalyst of the same composition obtained by impregnation.

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One-Pot Facile Fabrication of Multiple Nickel Nanoparticles Confined in Microporous Silica Giving a Multiple-Cores@Shell Structure as a Highly Efficient Catalyst for Methane Dry Reforming

ChemCatChem ◽

10.1002/cctc.201601263 ◽

2016 ◽

Vol 9 (1) ◽

pp. 127-136 ◽

Cited By ~ 37

Author(s):

Honggen Peng ◽

Xianhua Zhang ◽

Li Zhang ◽

Cheng Rao ◽

Jie Lian ◽

...

Keyword(s):

Shell Structure ◽

Nickel Nanoparticles ◽

Dry Reforming ◽

One Pot ◽

Efficient Catalyst ◽

Microporous Silica ◽

Methane Dry Reforming ◽

Highly Efficient ◽

Multiple Cores ◽

Facile Fabrication

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Facile synthesis of highly disperse Ni–Co nanoparticles over mesoporous silica for enhanced methane dry reforming

Nanoscale ◽

10.1039/c7nr09625a ◽

2018 ◽

Vol 10 (14) ◽

pp. 6409-6425 ◽

Cited By ~ 18

Author(s):

Subhasis Das ◽

Manideepa Sengupta ◽

Arijit Bag ◽

Mumtaj Shah ◽

Ankur Bordoloi

Keyword(s):

Mesoporous Silica ◽

Catalyst System ◽

Dry Reforming ◽

Dry Reforming Of Methane ◽

Facile Synthesis ◽

Methane Dry Reforming ◽

Synergistic Approach ◽

Co Nanoparticles ◽

Cobalt And Nickel

A synergistic approach was made to develop a highly stable and carbon resistant catalyst system based on cobalt and nickel supported over modified mesoporous silica for the dry reforming of methane (DRM).

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Structural, Textural, and Catalytic Properties of Ni-CexZr1−xO2 Catalysts for Methane Dry Reforming Prepared by Continuous Synthesis in Supercritical Isopropanol

Energies ◽

10.3390/en13143728 ◽

2020 ◽

Vol 13 (14) ◽

pp. 3728

Author(s):

Svetlana Pavlova ◽

Marina Smirnova ◽

Aleksei Bobin ◽

Svetlana Cherepanova ◽

Vasily Kaichev ◽

...

Keyword(s):

Nickel Nanoparticles ◽

Catalytic Properties ◽

Dry Reforming ◽

High Dispersion ◽

Incipient Wetness Impregnation ◽

One Pot ◽

Methane Dry Reforming ◽

Continuous Synthesis ◽

The One ◽

Supercritical Isopropanol

A series of 5%Ni-CexZr1−xO2 (x = 0.3, 0.5, 0.7) catalysts has been prepared via one-pot solvothermal continuous synthesis in supercritical isopropanol and incipient wetness impregnation of CexZr1−xO2 obtained by the same route. The textural, structural, red-ox, and catalytic properties in methane dry reforming (MDR) of Ni-modified Ce-Zr oxides synthesized by two routes have been compared. It was shown by XRD, TEM, and Raman spectroscopy that the method of Ni introduction does not affect the phase composition of the catalysts, but determines the dispersion of NiO. Despite a high dispersion of NiO and near-uniform distribution of Ni within Ce-Zr particles observed for the one-pot catalysts, they have shown a lower activity and stability in MDR as compared with impregnated ones. This is a result of a low Ni concentration in the surface layer due to segregation of Ce and decoration of nickel nanoparticles with support species.

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An Overview of Reforming Technologies and the Effect of Parameters on the Catalytic Performance of Mesoporous Silica/Alumina Supported Nickel Catalysts for Syngas Production by Methane Dry Reforming

Recent Innovations in Chemical Engineering (Formerly Recent Patents on Chemical Engineering) ◽

10.2174/2405520413666200313130420 ◽

2020 ◽

Vol 13 (4) ◽

pp. 303-322

Author(s):

M.A. Saad ◽

N.H. Abdurahman ◽

Rosli Mohd Yunus ◽

Mohammed Kamil ◽

Omar I. Awad

Keyword(s):

Catalytic Activity ◽

Mesoporous Silica ◽

Nickel Catalysts ◽

Catalytic Performance ◽

Dry Reforming ◽

Future Research ◽

Methane Dry Reforming ◽

Syngas Production ◽

Silica Alumina ◽

Supported Nickel Catalysts

Synthetic gas - a combination of (H2) and (CO) - is an important chemical intermediate for the production of liquid hydrocarbon, olefin, gasoline, and other valuable chemicals. Several reforming methods that use steam, carbon dioxide, and oxygen in the presence of various catalytic systems have been extensively investigated, and this paper reviews the recent research on the state-of-the-art of reforming technologies and the effect of parameters on the catalytic activity of mesoporous silica/alumina supported nickel catalysts for syngas production by methane dry reforming. First, we provide an overview of reforming technologies, including methane dry reforming, steam methane reforming, partial oxidation of CH4, and auto thermal reforming of CH4. Then, we review the literature on dry reforming catalysts. Next, we describe recent findings on the effect of parameters on the catalytic activity of mesoporous silica/alumina supported nickel catalysts for syngas production. Finally, we make proposals for future research. This study can help achieve a better understanding of the reforming technologies and the effects of parameters on catalytic performance for syngas production, thus contributing to the development of green technologies.

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Kinetic Regularities of Methane Dry Reforming Reaction on Nickel-Containing Modified Ceria–Zirconia

Energies ◽

10.3390/en14102973 ◽

2021 ◽

Vol 14 (10) ◽

pp. 2973

Author(s):

Valeria Fedorova ◽

Mikhail Simonov ◽

Konstantin Valeev ◽

Yuliya Bespalko ◽

Ekaterina Smal ◽

...

Keyword(s):

Flow Reactor ◽

Catalytic Properties ◽

Plug Flow ◽

Reaction Rate Constant ◽

Dry Reforming ◽

Incipient Wetness Impregnation ◽

One Pot ◽

Methane Dry Reforming ◽

Metal Support Interaction ◽

Detailed Kinetics

The Ni-containing catalysts based on ceria–zirconia doped with Ti and Ti+Nb were prepared by the solvothermal method in supercritical fluids. Ni deposition was carried out by incipient wetness impregnation and the one-pot technique. All materials were investigated by a complex of physicochemical methods (XRD, BET, TEM, H2-TPR). Samples catalytic properties were studied in methane dry reforming in the plug-flow reactor. Conversions of CH4 and CO2, H2/CO ratio, and CO and H2 yields were measured, and detailed kinetics analysis was carried out. The influence of Ni loading method and support modification on the catalytic behavior in the methane dry reforming process was studied. The preparation method of catalysts affects the textural characteristics. For one-pot samples, pore volume and surface area are lower than for impregnated samples. For catalysts on modified supports, strong metal–support interaction was shown to increase catalytic activity. A reduction pretreatment of samples was shown to have significant influence on their catalytic properties. The kinetic parameters such as reaction rate constant at 700 °C, effective activation energy, and TOF were estimated and analyzed.

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