Developing silicalite-1 encapsulated Ni nanoparticles as sintering-/coking-resistant catalysts for dry reforming of methane

doi:10.1016/j.cej.2022.137439

IMR OpenIR

	Developing silicalite-1 encapsulated Ni nanoparticles as sintering-/coking-resistant catalysts for dry reforming of methane
	Xu, Shanshan 1; Slater, Thomas J. A.2; Huang, Hong 3; Zhou, Yangtao 4; Jiao, Yilai 4; Parlett, Christopher M. A.1,2,5,6; Guan, Shaoliang 7; Chansai, Sarayute 1; Xu, Shaojun 5,8; Wang, Xinrui 1; Hardacre, Christopher 1; Fan, Xiaolei 1
通讯作者	Xu, Shanshan(shanshan.xu@manchester.ac.uk) ; Hardacre, Christopher(c.hardacre@manchester.ac.uk)
	2022-10-15
发表期刊	CHEMICAL ENGINEERING JOURNAL
ISSN	1385-8947
卷号	446 页码:12
摘要	The stability of catalysts in dry reforming of methane (DRM) is a known issue. In this paper an encapsulation strategy has been employed to improve the stability compared with conventional impregnation methods. Herein, nickel nanoparticles encapsulated in silicalite-1 were prepared using a range of methods including post treat-ment, direct hydrothermal and seed-directed methods to investigate the effect of synthesis protocol on the properties of catalysts, such as degree of encapsulation and Ni dispersion, and anti-coking/-sintering perfor-mance in DRM. The Ni@SiO2-S1 catalysts obtained by the seed-directed synthesis presented the full encapsu-lation of Ni NPs by the zeolite framework with small particle sizes (-2.9 nm) and strong metal-support interaction, which could sterically hinder the migration/aggregation of Ni NPs and carbon deposition. There-fore, Ni@SiO2-S1 showed stable CO2/CH4 conversions of 80% and 73%, respectively, with negligible metal sintering and coking deposition (-0.5 wt%) over 28 h, which outperformed the other catalysts prepared. In contrast, the catalysts developed by the post-treatment and ethylenediamine-protected hydrothermal methods showed the co-existence of Ni phase on the internal and external surfaces, i.e. incomplete encapsulation, with large Ni particles, contributing to Ni sintering and coking. The correlation of the synthesis-structure-performance in this study sheds light on the design of coking-/sintering-resistant encapsulated catalysts for DRM.
关键词	Silicalite-1 Encapsulated Ni catalyst Dry reforming of methane Anti-sintering Anti -coking
资助者	University of Manchester ; UK Catalysis Hub Consortium ; EPSRC
DOI	10.1016/j.cej.2022.137439
收录类别	SCI
语种	英语
资助项目	University of Manchester ; UK Catalysis Hub Consortium ; EPSRC[EP/R026939/1] ; EPSRC[EP/R026815/1] ; EPSRC[EP/R026645/1] ; EPSRC[EP/R027129/1]
WOS研究方向	Engineering
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:000833420500001
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/174627
专题	中国科学院金属研究所
通讯作者	Xu, Shanshan; Hardacre, Christopher
作者单位	1.Univ Manchester, Sch Engn, Dept Chem Engn & Analyt Sci, Oxford Rd, Manchester M13 9PL, Lancs, England 2.Diamond Light Source Ltd, Electron Phys Sci Imaging Ctr, Didcot OX11 0DE, Oxon, England 3.Forschungszentrum Julich, Electrochem Proc Engn IEK 14, D-52425 Julich, Germany 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 5.Rutherford Appleton Lab, Res Complex & Harwell, UK Catalysis Hub, Harwell OX11 0FA, Oxon, England 6.Univ Manchester Harwell, Diamond Light Source, Harwell Sci & Innovat Campus, Didcot OX11 0DE, Oxon, England 7.Harwell XPSThe EPSRC Natl Facil Photoelectron Spe, Res Complex & Harwell, Didcot OX11 0FA, Oxon, England 8.Cardiff Univ, Sch Chem, Cardiff Catalysis Inst, Cardiff CF10 3AT, Wales
推荐引用方式 GB/T 7714	Xu, Shanshan,Slater, Thomas J. A.,Huang, Hong,et al. Developing silicalite-1 encapsulated Ni nanoparticles as sintering-/coking-resistant catalysts for dry reforming of methane[J]. CHEMICAL ENGINEERING JOURNAL,2022,446:12.
APA	Xu, Shanshan.,Slater, Thomas J. A..,Huang, Hong.,Zhou, Yangtao.,Jiao, Yilai.,...&Fan, Xiaolei.(2022).Developing silicalite-1 encapsulated Ni nanoparticles as sintering-/coking-resistant catalysts for dry reforming of methane.CHEMICAL ENGINEERING JOURNAL,446,12.
MLA	Xu, Shanshan,et al."Developing silicalite-1 encapsulated Ni nanoparticles as sintering-/coking-resistant catalysts for dry reforming of methane".CHEMICAL ENGINEERING JOURNAL 446(2022):12.