Hollow hierarchical Ni/MgO-SiO2 catalyst with high activity, thermal stability and coking resistance for catalytic dry reforming of methane
Hollow hierarchical Ni/MgO-SiO2 catalyst with high activity, thermal stability and coking resistance for catalytic dry reforming of methane
复制标题
高活性、热稳定性和抗结焦性的空心多级Ni/MgO-SiO2催化剂用于甲烷催化干重整
DOI：
10.1016/j.ijhydene.2018.05.010
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发表时间：
2018-06
影响因子：
7.2
通讯作者：
Zhang P
中科院分区：
文献类型：
--
作者：
Zhang Qing;Feng Xiaoqian;Liu Jing;Zhao Liping;Song Xuefeng;Zhang Peng;Gao Lian;Liu J;Zhang P
甲烷干重整(DRM)同时转化这两种温室气体并产生合成气体(CO+H_2)，这对环境和工业都具有重要意义。采用晶型良好的氧化物作为前驱体，通过增强金属-载体的相互作用，可以制备出具有良好的烧结性和抗结焦性的镍基DRM催化剂。添加碱性助剂也被认为是提高DRM催化剂抗结焦性能的有效方法，但在催化剂中对助剂的结构、形态和相互作用的控制仍是一个挑战。为了将这两种方法很好地结合在一起以获得更好的催化性能，本文采用一锅水热法合成了Ni/MgO-SiO_2催化剂，其中Ni-层状硅酸盐是Ni颗粒的先驱体，而MgO助剂则以镁-层状硅酸盐的形式生成。该催化剂具有大比表面积(477.4×m~2/g)的层次化空心球状结构。镍粒子(Avg.6.0 nm)和MgO启动子均匀分布。该中空多层催化剂对甲烷干法重整反应具有较高的活性、热稳定性和抗结焦性能。
The methane dry reforming (DRM) simultaneously converts the two greenhouse gases and produces syngas (CO + H2), which is being significant for both environmental and industrial consideration. Employing well-defined crystal oxides as precursors can produce Ni-based DRM catalysts with good sintering and coking resistance by enhancing the metal-support interactions. Adding basic promoters also is considered as an effective way to improve the coking resistance of DRM catalysts, although challenge remains in the control over the structure, morphology and interaction of the promoter in the catalyst. To well combine the two methods together for better catalytic performance, in this work a Ni/MgO-SiO2catalyst was synthesized through a facile one-pot hydrothermal process, during which Ni-phyllosilicate formed as the precursor of Ni particles and MgO promoter was generated in form of Mg-phyllosilicate. This Ni/MgO-SiO2had a hierarchical hollow sphere structure with large surface area (477.4 m2/g). Both the Ni particles (avg. 6.0 nm) and MgO promoter uniformly distributed. This hollow hierarchical catalyst performed high activity, thermal stability and coking resistance for catalytic dry reforming of methane.
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影响因子：
5.5
作者：
Luna, Adolfo E. Castro;Iriarte, Maria E.
通讯作者：
Iriarte, Maria E.
影响因子：
5.5
作者：
Zhan-lin Xu;Ming Zhen;Y. Bi;K. Zhen
通讯作者：
Zhan-lin Xu;Ming Zhen;Y. Bi;K. Zhen
具有稳定 Ni 纳米颗粒的 Ni/La2O3 纳米棒催化剂上的甲烷干重整
影响因子：
22.1
作者：
Li, Xinyu;Li, Di;Gong, Jinlong
通讯作者：
Gong, Jinlong
影响因子：
5.3
作者：
Weiwei Yang;Huimin Liu;Yuming Li;Juan Zhang;Hao Wu;Dehua He
通讯作者：
Weiwei Yang;Huimin Liu;Yuming Li;Juan Zhang;Hao Wu;Dehua He
影响因子：
7.3
作者：
Bitter, JH;Seshan, K;Lercher, JA
通讯作者：
Lercher, JA