High Catalytic Performance of Ruthenium-Doped Mesoporous Nickel-Aluminum Oxides for Selective CO Methanation

2010 ◽  
Vol 122 (51) ◽  
pp. 10091-10094 ◽  
Author(s):  
Aihua Chen ◽  
Toshihiro Miyao ◽  
Kazutoshi Higashiyama ◽  
Hisao Yamashita ◽  
Masahiro Watanabe
Keyword(s):  
Catalytic Performance ◽  
Nickel Aluminum ◽  
Aluminum Oxides ◽  
Co Methanation ◽  
Selective Co Methanation

High Catalytic Performance of Ruthenium-Doped Mesoporous Nickel-Aluminum Oxides for Selective CO Methanation

2010 ◽  
Vol 49 (51) ◽  
pp. 9895-9898 ◽  
Author(s):  
Aihua Chen ◽  
Toshihiro Miyao ◽  
Kazutoshi Higashiyama ◽  
Hisao Yamashita ◽  
Masahiro Watanabe
Keyword(s):  
Catalytic Performance ◽  
Nickel Aluminum ◽  
Aluminum Oxides ◽  
Co Methanation ◽  
Selective Co Methanation

High catalytic performance of mesoporous zirconia supported nickel catalysts for selective CO methanation

2014 ◽  
Vol 4 (8) ◽  
pp. 2508-2511 ◽  
Author(s):  
Aihua Chen ◽  
Toshihiro Miyao ◽  
Kazutoshi Higashiyama ◽  
Mashiro Watanabe
Keyword(s):  
High Performance ◽  
Precious Metals ◽  
Nickel Catalysts ◽  
Catalytic Performance ◽  
Co Methanation ◽  
Long Term Stability ◽  
Selective Co Methanation ◽  
Wide Range ◽  
Mesoporous Zirconia ◽  
Supported Nickel Catalysts

Ni/mesoporous ZrO2, without precious metals, exhibits high performance for selective CO methanation at a wide range of working temperatures and superior long-term stability.

Catalytic performance of mesoporous silica-covered nickel core–shell particles for selective CO methanation

2015 ◽  
Vol 506 ◽  
pp. 143-150 ◽  
Author(s):  
Katsuhiko Hayashi ◽  
Toshihiro Miyao ◽  
Kazutoshi Higashiyama ◽  
Shigehito Deki ◽  
Yasunori Tabira ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Catalytic Performance ◽  
Core Shell ◽  
Co Methanation ◽  
Selective Co Methanation ◽  
Shell Particles

Effect of Fe and Co promoters on CO methanation activity of nickel catalyst prepared by impregnation – co-precipitation method

2020 ◽  
Vol 18 (5-6) ◽  
Author(s):  
Buyan-Ulzii Battulga ◽  
Tungalagtamir Bold ◽  
Enkhsaruul Byambajav
Keyword(s):  
Synergetic Effect ◽  
Space Velocity ◽  
Catalytic Performance ◽  
Precipitation Method ◽  
Molar Ratio ◽  
Alumina Support ◽  
Co Methanation ◽  
Temperature Range ◽  
Co Precipitation ◽  
Catalyst Distribution

AbstractNi based catalysts supported on γ-Al2O3 that was unpromoted (Ni/γAl2O3) or promoted (Ni–Fe/γAl2O3, Ni–Co/γAl2O3, and Ni–Fe–Co/γAl2O3) were prepared using by the impregnation – co-precipitation method. Their catalytic performances for CO methanation were studied at 3 atm with a weight hourly space velocity (WHSV) of 3000 ml/g/h of syngas with a molar ratio of H2/CO = 3 and in the temperature range between 130 and 350 °C. All promoters could improve nickel distribution, and decreased its particle sizes. It was found that the Ni–Co/γAl2O3 catalyst showed the highest catalytic performance for CO methanation in a low temperature range (<250 °C). The temperatures for the 20% CO conversion over Ni–Co/γAl2O3, Ni–Fe/γAl2O3, Ni–Fe–Co/γAl2O3 and Ni/γAl2O3 catalysts were 205, 253, 263 and 270 °C, respectively. The improved catalyst distribution by the addition of cobalt promoter caused the formation of β type nickel species which had an appropriate interacting strength with alumina support in the Ni–Co/γAl2O3. Though an addition of iron promoter improved catalyst distribution, the methane selectivity was lowered due to acceleration of both CO methanation and WGS reaction with the Ni–Fe/γAl2O3. Moreover, it was found that there was no synergetic effect from the binary Fe–Co promotors in the Ni–Fe–Co/γAl2O3 on catalytic activity for CO methanation.

scholarly journals ZrO 2 -modified Ni/LaAl 11 O 18 catalyst for CO methanation: Effects of catalyst structure on catalytic performance

2018 ◽  
Vol 39 (2) ◽  
pp. 297-308 ◽  
Author(s):  
Hongmei Ai ◽  
Hongyuan Yang ◽  
Qing Liu ◽  
Guoming Zhao ◽  
Jing Yang ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Catalyst Structure ◽  
Co Methanation ◽  
O 18

scholarly journals Selective CO Methanation Over Ru Supported on Carbon Spheres: The Effect of Carbon Functionalization on the Reverse Water Gas Shift Reaction

2018 ◽  
Vol 148 (11) ◽  
pp. 3502-3513 ◽  
Author(s):  
David O. Kumi ◽  
Mbongiseni W. Dlamini ◽  
Tumelo N. Phaahlamohlaka ◽  
Sabelo D. Mhlanga ◽  
Neil J. Coville ◽  
...  
Keyword(s):  
Water Gas Shift ◽  
Water Gas Shift Reaction ◽  
Carbon Spheres ◽  
Co Methanation ◽  
Reverse Water Gas Shift ◽  
Selective Co Methanation ◽  
Shift Reaction ◽  
Water Gas

Impact of double-solvent impregnation on the Ni dispersion of Ni/SBA-15 catalysts and catalytic performance for the syngas methanation reaction

RSC Advances ◽  
2016 ◽  
Vol 6 (42) ◽  
pp. 35875-35883 ◽  
Author(s):  
Miao Tao ◽  
Zhong Xin ◽  
Xin Meng ◽  
Yuhao Lv ◽  
Zhicheng Bian
Keyword(s):  
Catalytic Performance ◽  
Impregnation Method ◽  
Co Methanation ◽  
Methanation Reaction ◽  
Excellent Activity

Ni/SBA-15 prepared by a double-solvent impregnation method showed excellent activity for CO methanation and catalyst sintering was the main cause of deactivation.

scholarly journals Highly dispersed Ni nanoparticles on 3D-mesoporous KIT-6 for CO methanation: Effect of promoter species on catalytic performance

2017 ◽  
Vol 38 (7) ◽  
pp. 1127-1137 ◽  
Author(s):  
Hong-Xia Cao ◽  
Jun Zhang ◽  
Cheng-Long Guo ◽  
Jingguang G. Chen ◽  
Xiang-Kun Ren
Keyword(s):  
Catalytic Performance ◽  
Ni Nanoparticles ◽  
Co Methanation ◽  
Highly Dispersed

scholarly journals Effect of a titania covering on CNTS as support for the Ru catalysed selective CO methanation

2018 ◽  
Vol 232 ◽  
pp. 492-500 ◽  
Author(s):  
David O. Kumi ◽  
Tumelo N. Phaahlamohlaka ◽  
Mbongiseni W. Dlamini ◽  
Ian T. Mangezvo ◽  
Sabelo D. Mhlanga ◽  
...  
Keyword(s):  
Co Methanation ◽  
Selective Co Methanation

scholarly journals Selective CO Methanation in H2-Rich Gas for Household Fuel Cell Applications

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2844 ◽  
Author(s):  
Panagiota Garbis ◽  
Andreas Jess
Keyword(s):  
Fuel Cell ◽  
Natural Gas ◽  
Fixed Bed ◽  
Cell System ◽  
Operating Conditions ◽  
Attractive Alternative ◽  
Inlet Temperature ◽  
Co2 Methanation ◽  
Co Methanation ◽  
Selective Co Methanation

Polymer electrolyte membrane fuel cells (PEMFCs) are often used for household applications, utilizing hydrogen produced from natural gas from the gas grid. The hydrogen is thereby produced by steam reforming of natural gas followed by a water gas shift (WGS) unit. The H2-rich gas contains besides CO2 small amounts of CO, which deactivates the catalyst used in the PEMFCs. Preferential oxidation has so far been a reliable process to reduce this concentration but valuable H2 is also partly converted. Selective CO methanation considered as an attractive alternative. However, CO2 methanation consuming the valuable H2 has to be minimized. The modelling of selective CO methanation in a household fuel cell system is presented. The simulation was conducted for single and two-stage adiabatic fixed bed reactors (in the latter case with intermediate cooling), and the best operating conditions to achieve the required residual CO content (100 ppm) were calculated. This was done by varying the gas inlet temperature as well as the mass of the catalyst. The feed gas represented a reformate gas downstream of a typical WGS reaction unit (0.5%–1% CO, 10%–25% CO2, and 5%–20% H2O (rest H2)).

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