Carbon Deposition and Catalytic Deactivation during CO2 Reforming of CH4 over Co/γ-Al2O3 Catalysts

2002 ◽  
Vol 205 (2) ◽  
pp. 289-293 ◽  
Author(s):  
E. Ruckenstein ◽  
H.Y. Wang
Keyword(s):  
Carbon Deposition ◽  
Co2 Reforming ◽  
Co2 Reforming Of Ch4 ◽  
Catalytic Deactivation

scholarly journals CO2 Reforming of CH4 Using Coke Oven Gas over Ni/MgO-Al2O3 Catalysts: Effect of the MgO:Al2O3 Ratio

Catalysts ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1468
Author(s):  
Ho-Ryong Park ◽  
Beom-Jun Kim ◽  
Yeol-Lim Lee ◽  
Seon-Yong Ahn ◽  
Kyoung-Jin Kim ◽  
...  
Keyword(s):  
Carbon Deposition ◽  
Active Material ◽  
Coke Oven ◽  
Catalytic Performance ◽  
Ni Catalyst ◽  
Coke Oven Gas ◽  
Co2 Reforming ◽  
Co2 Reforming Of Ch4 ◽  
Supported Ni Catalyst ◽  
Al2o3 Catalyst

Research is being actively conducted to improve the carbon deposition and sintering resistance of Ni-based catalysts. Among them, the Al2O3-supported Ni catalyst has been broadly studied for the dry reforming reaction due to its high CH4 activity at the beginning of the reaction. However, there is a problem of deactivation due to carbon deposition of Ni/Al2O3 catalyst and sintering of Ni, which is a catalytically active material. Supplementing MgO in Ni/Al2O3 catalyst can result in an improved MgAl2O4 spinel structure and basicity, which can be helpful for the activation of methane and carbon dioxide molecules. In order to confirm the optimal supports’ ratio in Ni/MgO-Al2O3 catalysts, the catalysts were prepared by supporting Ni after controlling the MgO:Al2O3 ratio stepwise, and the prepared catalysts were used for CO2 reforming of CH4 (CDR) using coke oven gas (COG). The catalytic reaction was conducted at 800 °C and at a high gas hourly space velocity (GHSV = 1,500,000 h−1) to screen the catalytic performance. The Ni/MgO-Al2O3 (MgO:Al2O3 = 3:7) catalyst showed the best catalytic performance between prepared catalysts. From this study, the ratio of MgO:Al2O3 was confirmed to affect not only the basicity of the catalyst but also the dispersion of the catalyst and the reducing property of the catalyst surface.

Suppression of carbon deposition in the CO2-reforming of CH4 by adding basic metal oxides to a Ni/Al2O3 catalyst

1996 ◽  
Vol 144 (1-2) ◽  
pp. 111-120 ◽  
Author(s):  
Tatsuro Horiuchi ◽  
Kaori Sakuma ◽  
Takehisa Fukui ◽  
Yukio Kubo ◽  
Toshihiko Osaki ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Carbon Deposition ◽  
Basic Metal ◽  
Co2 Reforming ◽  
Co2 Reforming Of Ch4 ◽  
Al2o3 Catalyst

Catalyst performance of MoS2 and WS2 for the CO2-reforming of CH4 Suppression of carbon deposition

1997 ◽  
Vol 155 (2) ◽  
pp. 229-238 ◽  
Author(s):  
Toshihiko Osaki ◽  
Tatsuro Horiuchi ◽  
Kenzi Suzuki ◽  
Toshiaki Mori
Keyword(s):  
Carbon Deposition ◽  
Co2 Reforming ◽  
Co2 Reforming Of Ch4

Multi-Ni@Ni phyllosilicate hollow sphere for CO2 reforming of CH4: influence of Ni precursors on structure, sintering, and carbon resistance

2018 ◽  
Vol 8 (7) ◽  
pp. 1915-1922 ◽  
Author(s):  
Ziwei Li ◽  
Sibudjing Kawi
Keyword(s):  
Pore Structure ◽  
Strong Interaction ◽  
Hollow Sphere ◽  
Reduction Method ◽  
Carbon Deposition ◽  
Hollow Spheres ◽  
Catalytic Performance ◽  
Co2 Reforming ◽  
Co2 Reforming Of Ch4 ◽  
Excellent Catalytic Performance

Multi-Ni@Ni phyllosilicate hollow spheres synthesized with Ni(acac)2 precursor via hydrothermal and H2 reduction method have unique pore structure and strong interaction between Ni and Ni phyllosilicate which help prevent Ni sintering and carbon deposition, yielding excellent catalytic performance for CO2 reforming of CH4 reaction.

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