Dry reforming of methane to hydrogen-rich syngas over robust fibrous KCC-1 stabilized nickel catalyst with high activity and coke resistance

被引：77

作者：

Abdulrasheed, A. A. ^{[1
,4
]}

Jalil, A. A. ^{[1
,2
]}

Hamid, M. Y. S. ^{[1
]}

Siang, T. J. ^{[1
]}

Fatah, N. A. A. ^{[1
]}

Izan, S. M. ^{[3
]}

Hassan, N. S. ^{[1
]}

机构：

[1] Univ Teknol Malaysia, Fac Engn, Sch Chem & Energy Engn, Utm Johor Bahru 81310, Johor, Malaysia

[2] Univ Teknol Malaysia, Ctr Hydrogen Energy, Inst Future Energy, Utm Johor Bahru 81310, Johor, Malaysia

[3] Univ Teknol Malaysia, Fac Sci, Dept Chem, Utm Johor Bahru 81310, Johor, Malaysia

[4] Abubakar Tafawa Balewa Univ, Dept Chem Engn, PMB 0248, Bauchi, Bauchi State, Nigeria

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2020年 / 45卷 / 36期

关键词：

Nickel; Fibrous silica; Core-shell; Coke resistance; Mesoporous material; ONE-POT SYNTHESIS; MESOPOROUS SILICA; NI NANOPARTICLES; CARBON-DIOXIDE; COKING RESISTANCE; OXIDE CATALYST; SOL-GEL; CO2; DEACTIVATION; SURFACE;

D O I：

10.1016/j.ijhydene.2019.04.126

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A remarkably stable and active nickel (Ni) catalyst, supported on fibrous KCC-1 silica particles, was prepared by in situ one-pot hydrothermal method to produce a hydrogenrich syngas. The catalysts' properties were characterized by BET, XRD, FESEM-mapping, FTIR-pyrrole, FTIR-KBr, and XPS, while coke deposition was evaluated using Raman spectra, TEM and TGA/DTA. The high dispersion of Ni crystallites, enhanced basicity, strong Ni-KCC-1 interaction, and encapsulation of Ni particles contributed to the enhanced catalyst stability and activity. The one-pot catalyst produced high CH4 and CO2 conversions at 92% and 88% respectively, with high H-2/CO ratio, and an extended stability over 72 h at 750 degrees C. There was limited coke deposition, predominantly of the amorphous type, owing to its synthesis method and support morphology. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：18549 / 18561

页数：13

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