scholarly journals Gallium-Promoted Ni Catalyst Supported on MCM-41 for Dry Reforming of Methane

Catalysts ◽  
2018 ◽  
Vol 8 (6) ◽  
pp. 229 ◽  
Author(s):  
Ahmed Al-Fatesh ◽  
Ahmed Ibrahim ◽  
Jehad Abu-Dahrieh ◽  
Abdulrahman Al-Awadi ◽  
Ahmed El-Toni ◽  
...  
AIChE Journal ◽  
2020 ◽  
Author(s):  
Huanhao Chen ◽  
Yan Shao ◽  
Yibing Mu ◽  
Huan Xiang ◽  
Rongxin Zhang ◽  
...  

2020 ◽  
Vol 92 (4) ◽  
pp. 545-556
Author(s):  
Maslin Chotirach ◽  
Supawan Tantayanon ◽  
Duangamol Nuntasri Tungasmita ◽  
Junliang Sun ◽  
Sukkaneste Tungasmita

AbstractA novel approach of titanium nitride (TiN) incorporated into SBA-15 framework was developed using one-step hydrothermal synthesis method. TiN contents up to ~18 wt% were directly dispersed in a synthetic gel under a typical strong acidic condition. The physico-chemical characteristics and the surface properties were investigated by means of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), N2 adsorption-desorption, field emission scanning electron microscope (FESEM) equipped with energy dispersive X-ray spectroscopy (EDS), wavelength dispersive X-ray fluorescence (WDXRF) and CO2-temperature programmed desorption (CO2-TPD). The results indicated that the highly ordered mesostructured was effectively maintained with high specific surface area of 532–685 m2g−1. The basicity of the modified SBA-15 increased with rising TiN loading. These modified materials were applied as a support of Ni catalyst in dry reforming of methane (DRM). Their catalytic behavior possessed superior conversions for both CO2 and CH4 with the highest H2/CO ratio (0.83) as well as 50 % lower carbon formation, compared to bare SBA-15 support.


RSC Advances ◽  
2016 ◽  
Vol 6 (74) ◽  
pp. 70537-70546 ◽  
Author(s):  
Xiaopeng Yu ◽  
Fubao Zhang ◽  
Wei Chu

NiCo and NiCu catalysts exhibited enhanced stability compared with a Ni catalyst for the dry reforming of methane. On the contrary, NiMn and NiZr catalysts decreased the reforming stability.


2009 ◽  
Vol 148 (3-4) ◽  
pp. 260-267 ◽  
Author(s):  
Yi-An Zhu ◽  
De Chen ◽  
Xing-Gui Zhou ◽  
Wei-Kang Yuan

2021 ◽  
Vol 17 (1) ◽  
pp. 88-102
Author(s):  
Phakampai Aunmunkong ◽  
Choowong Chaisuk

The transition metal (Co, Mn, Cu or Zn) doped La2O3 material was prepared by flame spray pyrolysis (FSP) technique. The 2 wt.% Ni catalyst supported on this material was characterized by XRD, N2 physisorption, TPR, H2 chemisorption and TGA, and evaluated by the dry reforming of methane (DRM). The perovskite structure was certainly formed when either Co or Mn was introduced. The Cu can generate the La2CuO4 spinel phase while the Zn showed a mixed phase of La2O3, ZnO and La(OH)3. The Ni/Co-La2O3 catalyst was more active for the DRM because of high amount of active dual sites of Ni and Co metals dispersed on the catalyst surface. The formation of La2O2CO3 during the reaction can inhibit the coke formation. The cooperation of La2O2CO3 and MnO phases in the Ni/Mn-La2O3 catalyst was promotional effect to decrease carbon deposits on the catalyst surface. The partial substitution of Co for Mn with a small content of Mn can enhance the catalytic activity and the product yield. The Ni/Mn0.05Co0.95-La2O3 catalyst showed the highest CH4 conversion, H2 yield and H2/CO ratio. The Mn inserted into the perovskite structure of LaCoO3 was an important player to change oxygen mobility within the crystal lattice to maintain a high performance of the catalyst. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 


2012 ◽  
Vol 113-114 ◽  
pp. 19-30 ◽  
Author(s):  
Sergey Sokolov ◽  
Evgenii V. Kondratenko ◽  
Marga-Martina Pohl ◽  
Axel Barkschat ◽  
Uwe Rodemerck

Catalysts ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 827
Author(s):  
Ahmed Aidid Ibrahim ◽  
Anis Hamza Fakeeha ◽  
Ahmed Elhag Abasaeed ◽  
Ahmed Sadeq Al-Fatesh

Dry reforming of methane (DRM) has a substantial potential to provide a cost-effective process and in reducing greenhouse gases. Its application has been hindered by carbon deposition and instability problems. The use of an appropriate catalyst is influenced by the support type. The objective of this investigation is to elucidate the effect of different sources of ZrO2 support. Four kinds of ZrO2, namely RC-100 and Z-3215, MKnano, and ELTN were acquired from Japan, Canada, and China, respectively. The catalyst samples were analyzed by BET, XRD, TPR, TPD, TEM, TGA, TPO, FT-IR, and Raman. The analysis of the structural properties displayed that all Ni-supported catalysts, regardless of their source, are mesoporous and that 5Ni-RC-100 possessed the highest BET surface area of 17.7 m2/g and 5Ni-MKnano had the lowest value of BET 3.16 m2/g. In the TPD and TEM analysis, the 5Ni-RC-100 catalyst presented the highest intensity of basicity and the minimum average particle size of 3.35 nm, respectively. The 5Ni-RC-100 catalyst outperformed 5Ni-ELTN by exhibiting 44% higher CH4 conversion; however, 5Ni-RC-100 gave the highest weight loss in the TGA analysis of 66%.


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