Eclectic trimetallic Ni-Co-Ru catalyst for the dry reforming of methane

被引：22

作者：

Aramouni, Nicolas Abdel Karim ^{[1
,2
]}

Zeaiter, Joseph ^{[1
]}

Kwapinski, Witold ^{[2
]}

Leahy, James J. ^{[2
]}

Ahmad, Mohammad N. ^{[1
]}

机构：

[1] Amer Univ Beirut, Baha & Walid Bassatne Dept Chem Engn & Adv Energy, Beirut, Lebanon

[2] Univ Limerick, Bernal Inst, Fac Sci & Engn, Dept Chem Sci, Limerick, Ireland

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2020年 / 45卷 / 35期

基金：

爱尔兰科学基金会;

关键词：

Nickel; Cobalt; Ruthenium; Methane dry reforming; Whisker carbon; SYNGAS PRODUCTION; BIMETALLIC CATALYSTS; NI/AL2O3; CATALYSTS; NICKEL-CATALYSTS; PARTICLE-SIZE; SUPPORTED NI; CARBON; COBALT; DECOMPOSITION; DEACTIVATION;

D O I：

10.1016/j.ijhydene.2020.04.261

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：

Ru-promoted Ni-Co catalysts supported on MgO-Al2O3 are tested for dry reforming activity in a fixed-bed reactor at atmospheric pressure. The effect of temperature and contact time is investigated, and the catalysts maintain high stability for up to 47 h on stream. The support surface area significantly affects dispersion, and whisker carbon is observed in spent samples with pore sizes higher than 15 nm. H-2-TPR studies reveal the presence of spinels that are not completely reducible, yet the catalysts give remarkable activity. Four synthesis methods are tested for the support, with the sol-gel method in neutral conditions providing the best performance, with a small compromise on activity but a significant improvement in catalyst stability and no whisker carbon formation. Further work will optimize the Ni/Co ratio in the active phase to decrease the carbon buildup on the catalysts. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：17153 / 17163

页数：11

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