Significant roles of mesostructure and basic modifier for ordered mesoporous Ni/CaO–Al2O3 catalyst towards CO2 reforming of CH4

2014 ◽  
Vol 4 (6) ◽  
pp. 1759-1770 ◽  
Author(s):  
Leilei Xu ◽  
Zhichao Miao ◽  
Huanling Song ◽  
Wei Chen ◽  
Lingjun Chou
Keyword(s):  
Catalytic Performance ◽  
Dry Reforming ◽  
Co2 Reforming ◽  
Co2 Reforming Of Ch4 ◽  
Ordered Mesoporous ◽  
Al2o3 Catalyst

The significant roles of mesostructure and basic modifier in improving the catalytic performance of dry reforming were investigated.

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.

scholarly journals Nanosized Ni/SBA-15 Catalysts for CO2 Reforming of CH4

2019 ◽  
Vol 9 (9) ◽  
pp. 1926 ◽  
Author(s):  
Ahmed A. Ibrahim ◽  
Ashraf Amin ◽  
Ahmed S. Al-Fatesh ◽  
Nadavala Siva Kumar ◽  
Samsudeen Olajide Kasim ◽  
...  
Keyword(s):  
Bimetallic Catalysts ◽  
Catalytic Properties ◽  
Fixed Bed ◽  
Catalytic Performance ◽  
Dry Reforming ◽  
Fixed Bed Reactor ◽  
Co2 Reforming ◽  
Methane Dry Reforming ◽  
Remarkable Effect ◽  
Co2 Reforming Of Ch4

Ni, Co, and Co–Ni bimetallic catalysts supported over SBA-15 and over SBA-15 doped with Zn or Ce oxides were prepared and tested in a methane dry reforming reaction. The loading of the metals in the catalyst was 5 wt % for either mono or bimetallic catalysts. The prepared catalysts were tested in a continuous-flow fixed-bed reactor at 800 °C under atmospheric pressure. XRD, TPR, TPD, and SEM characterization techniques were employed to investigate the catalytic properties of fresh catalysts. SEM and TGA were used to study the catalytic properties of spent catalysts. A remarkable effect on the reduction properties and catalytic performance of catalysts was observed after adding Zn and Ce. Over an 8 h test, Ni/SBA-15 showed the best activity and stability. The conversion was 90% for CH4 and CO2. Co–Ni/SBA-15 and Co–Ni/Ce–SBA-15 have shown a reasonable activity and stability. Selectivity of the Ni/SBA-15 catalyst was higher than all other catalysts as indicated by the H2/CO ratio. Co/SBA-15 and Co–Ni/Zn–SBA-15 showed a low activity and selectivity. TPD–NH3 profiles indicated that doping SBA-15 with Ce and/or Zn increased the catalyst acidic sites. Ni/SBA-15 is an excellent potential catalyst for commercial methane dry reforming processes.

The effect of preparation method on the catalytic performance over superior MgO-promoted Ni–Ce0.8Zr0.2O2 catalyst for CO2 reforming of CH4

2013 ◽  
Vol 38 (31) ◽  
pp. 13649-13654 ◽  
Author(s):  
Dae-Woon Jeong ◽  
Won-Jun Jang ◽  
Jae-Oh Shim ◽  
Hyun-Seog Roh ◽  
In Hyuk Son ◽  
...  
Keyword(s):  
Preparation Method ◽  
Catalytic Performance ◽  
Co2 Reforming ◽  
Co2 Reforming Of Ch4

Oxidative CO2 reforming of CH4 over Ni/α-Al2O3 catalyst

2011 ◽  
Vol 17 (3) ◽  
pp. 479-483 ◽  
Author(s):  
A.S.A. Al-Fatesh ◽  
A.A. Ibrahim ◽  
A.H. Fakeeha ◽  
A.E. Abasaeed ◽  
M.R.H. Siddiqui
Keyword(s):  
Co2 Reforming ◽  
Co2 Reforming Of Ch4 ◽  
Α Al2o3 ◽  
Al2o3 Catalyst

Study of stability of Ni/MgO/γ-Al2O3 catalyst prepared by plasma for CO2 reforming of CH4

2013 ◽  
Vol 211 ◽  
pp. 114-119 ◽  
Author(s):  
Yan Xu ◽  
Huali Long ◽  
Qiang Wei ◽  
Xiaoqing Zhang ◽  
Shuyong Shang ◽  
...  
Keyword(s):  
Co2 Reforming ◽  
Co2 Reforming Of Ch4 ◽  
Al2o3 Catalyst

Catalytic performance of reduced La2−xSrxNiO4 perovskite-like oxides for CO2 reforming of CH4

2004 ◽  
Vol 263 (1) ◽  
pp. 1-9 ◽  
Author(s):  
J Rynkowski ◽  
P Samulkiewicz ◽  
A.K Ladavos ◽  
P.J Pomonis
Keyword(s):  
Catalytic Performance ◽  
Co2 Reforming ◽  
Co2 Reforming Of Ch4
Sign in / Sign up

Export Citation Format

Share Document