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
收藏
页码：17153 / 17163
页数：11
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