He, Feng Zhuang, Jiahao Lu, Bin Liu, Xianglin Zhang, Jianling Gu, Fangna Zhu, Minghui Xu, Jing Zhong, Ziyi Xu, Guangwen
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Developing Ni-based catalysts with high activity and stability in low-temperature methanation is necessary due to their sintering and coking at high temperatures. Here, we report our developed novel Ni-Zr-Al catalysts derived from Ni-Zr-Al ternary hydrotalcites synthesized by a hydrothermal process, followed by a reduction in hydrogen. Comparing wi...
He, Feng Zhuang, Jiahao Lu, Bin Liu, Xianglin Zhang, Jianling Gu, Fangna Zhu, Minghui Xu, Jing Zhong, Ziyi Xu, Guangwen
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Developing Ni-based catalysts with high activity and stability in low-temperature methanation is necessary due to their sintering and coking at high temperatures. Here, we report our developed novel Ni-Zr-Al catalysts derived from Ni-Zr-Al ternary hydrotalcites synthesized by a hydrothermal process, followed by a reduction in hydrogen. Comparing wi...
Liu, Jiao Zheng, Chuanyue Yue, Junrong Xu, Guangwen
Kaolin as a raw material for mesoporous support was firstly modified by calcination, add treatment, and then was used to prepare nickel catalysts. The amount of alumina which was activated in kaolin during thermal treatment and then leached out in the acid was different. XRD pattern of the kaolin calcined at 600 degrees C or 900 degrees C exhibited...
Liu, Jiao Zheng, Chuanyue Yue, Junrong Xu, Guangwen
Kaolin as a raw material for mesoporous support was firstly modified by calcination, add treatment, and then was used to prepare nickel catalysts. The amount of alumina which was activated in kaolin during thermal treatment and then leached out in the acid was different. XRD pattern of the kaolin calcined at 600 degrees C or 900 degrees C exhibited...
Du, Jinping Gao, Jiajian Gu, Fangna Zhuang, Jiahao Lu, Bin Jia, Lihua Xu, Guangwen Liu, Qing Su, Fabing
Supported Ni/Al2O3 catalysts are widely used in chemical industries. Regeneration of the deactivated Ni catalysts caused by sintering of Ni nanoparticles and carbon deposition after long-term operation is significant but still very challenging. In this work, a feasible strategy via solid-phase reaction between NiO and Al2O3 followed by a controlled...
Yuan, Hongyou Wu, Shubin Yin, Xiuli Huang, Yanqin Guo, Daliang Wu, Chuangzhi
To raise H-2/CO and remove tar for biomass product gas, sodium titanates 4Na(2)O center dot 5TiO(2) and Na2O center dot 3TiO(2) were evaluated at 850 degrees C using wood powder pyrolysis gas produced from a 0.3 kg/h screw pyrolyzer with no extra steam, silica sand was selected as an inert material for comparison. The GHSV of the runs were around 2...
Yuan, Hongyou Wu, Shubin Yin, Xiuli Huang, Yanqin Guo, Daliang Wu, Chuangzhi
To raise H-2/CO and remove tar for biomass product gas, sodium titanates 4Na(2)O center dot 5TiO(2) and Na2O center dot 3TiO(2) were evaluated at 850 degrees C using wood powder pyrolysis gas produced from a 0.3 kg/h screw pyrolyzer with no extra steam, silica sand was selected as an inert material for comparison. The GHSV of the runs were around 2...
Geng, SL Han, ZN Hu, Y Cui, YB Yue, JR Yu, J Xu, GW Geng, Sulong Han, Zhennan Hu, Yan
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Micro fluidized bed (MFB) reactor offers a good way to determine the intrinsic kinetics of some reactions. For catalytic decomposition of methane (CMD), the hydrogen production rate appears much higher when catalyst is injected into an MFB reactor by pulse, in comparison with that via gas switching. The carbon nanotubes (CNTs) produced in an MFB we...
Theofanidis, Stavros-Alexandros Galvita, Vladimir Poelman, Hilde Batchu, Rakesh Buelens, Lukas Detavernier, Christophe Marin, Guy
Catalyst deactivation due to carbon deposition is a major issue in all reforming technologies. Because of the significant economic cost of catalyst replacement, catalyst regeneration is increasingly attracting attention. The regeneration mechanism of Ni catalysts, with respect to carbon removal, was investigated on support materials prepared by one...
Hu, Jiawei Galvita, Vladimir Poelman, Hilde Detavernier, Christophe Marin, Guy
Catalyst-assisted chemical looping auto-thermal dry reforming (CCAR) is an environment-friendly energy conversion process, performed over a reactor bed with double function, composed of a catalyst and an oxygen storage material (OSM). It converts CH4 and CO2 into industrial syngas, while simultaneously utilizing CO2 from the atmosphere. Two reactor...