Fabrication of Ce-Promoted Ni/Al2O3 Methane Steam Reforming Catalysts by Impregnation

2020 ◽  
Vol 20 (7) ◽  
pp. 4327-4330
Author(s):  
Ye Sol Lim ◽  
Min-Jin Lee ◽  
Kyoung-Jin Lee ◽  
Sangjin Lee ◽  
Haejin Hwang
Keyword(s):  
Particle Size ◽  
Microstructural Evolution ◽  
Steam Reforming ◽  
Carbon Deposition ◽  
Methane Steam Reforming ◽  
Ni Catalysts ◽  
Good Dispersion ◽  
Methane Steam ◽  
Reforming Catalysts ◽  
Steam Reforming Catalysts

CeO2-promoted Ni/Al2O3 catalysts were fabricated by impregnation. The effects of the CeO2 promotion and impregnation order on the microstructural evolution and catalytic durability were investigated for methane steam reforming. The CeO2-promoter nanoparticles resulted in good dispersion and reduced particle size of Ni catalysts. The enhanced durability of CeO2-promoted Ni/Al2O3 catalysts might be associated with the depression of carbon deposition by the presence of CeO2-promoter nanoparticles.

scholarly journals In silicosearch for novel methane steam reforming catalysts

2013 ◽  
Vol 15 (12) ◽  
pp. 125021 ◽  
Author(s):  
Yue Xu ◽  
Adam C Lausche ◽  
Shengguang Wang ◽  
Tuhin S Khan ◽  
Frank Abild-Pedersen ◽  
...  
Keyword(s):  
Steam Reforming ◽  
Methane Steam Reforming ◽  
Methane Steam ◽  
Reforming Catalysts ◽  
Steam Reforming Catalysts

scholarly journals A Study on CO2 Methanation and Steam Methane Reforming over Commercial Ni/Calcium Aluminate Catalysts

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2792 ◽  
Author(s):  
Gabriella Garbarino ◽  
Federico Pugliese ◽  
Tullio Cavattoni ◽  
Guido Busca ◽  
Paola Costamagna
Keyword(s):  
Steam Reforming ◽  
Operating Conditions ◽  
Packed Bed Reactor ◽  
Methane Steam Reforming ◽  
Hydrogen Yield ◽  
Reactor Model ◽  
Co2 Methanation ◽  
Methane Steam ◽  
Reforming Catalysts ◽  
Steam Reforming Catalysts

Three Ni-based natural gas steam reforming catalysts, i.e., commercial JM25-4Q and JM57-4Q, and a laboratory-made catalyst (26% Ni on a 5% SiO2–95% Al2O3), are tested in a laboratory reactor, under carbon dioxide methanation and methane steam reforming operating conditions. The laboratory catalyst is more active in both CO2 methanation (equilibrium is reached at 623 K with 100% selectivity) and methane steam reforming (92% hydrogen yield at 890 K) than the two commercial catalysts, likely due to its higher nickel loading. In any case, commercial steam reforming catalysts also show interesting activity in CO2 methanation, reduced by K-doping. The interpretation of the experimental results is supported by a one-dimensional (1D) pseudo-homogeneous packed-bed reactor model, embedding the Xu and Froment local kinetics, with appropriate kinetic parameters for each catalyst. In particular, the H2O adsorption coefficient adopted for the commercial catalysts is about two orders of magnitude higher than for the laboratory-made catalyst, and this is in line with the expectations, considering that the commercial catalysts have Ca and K added, which may promote water adsorption.

scholarly journals DFT Benchmark Studies on Representative Species and Poisons of Methane Steam Reforming on Ni(111)

2021 ◽  
Author(s):  
Sai Sharath Yadavalli ◽  
Glenn Jones ◽  
Michail Stamatakis
Keyword(s):  
Steam Reforming ◽  
Graphitic Carbon ◽  
Methane Steam Reforming ◽  
Ni Catalysts ◽  
Methane Steam ◽  
Representative Species ◽  
Industrial Operations ◽  
Major Impediment ◽  
Carbon Based

Ni catalysts used in Methane Steam Reforming (MSR) are highly susceptible to poisoning by carbon-based species, which poses a major impediment to the productivity of industrial operations. These graphitic carbon-like...

Methane steam reforming for hydrogen production using low water-ratios without carbon formation over ceria coated Ni catalysts

2008 ◽  
Vol 345 (2) ◽  
pp. 119-127 ◽  
Author(s):  
Jiahui Xu ◽  
Connie M.Y. Yeung ◽  
Jun Ni ◽  
Frederic Meunier ◽  
Nadia Acerbi ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Steam Reforming ◽  
Methane Steam Reforming ◽  
Carbon Formation ◽  
Ni Catalysts ◽  
Methane Steam
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