Vanadium promoted Ni(Mg,Al)O hydrotalcite-derived catalysts for CO2 methanation

被引：25
|
作者：
Swirk Da Costa, Katarzyna [1 ,2 ,3 ]
Summa, Paulina [1 ,2 ]
Wierzbicki, Dominik [2 ]
Motak, Monika [2 ]
Da Costa, Patrick [1 ]
机构：
[1] Sorbonne Univ, Inst Jean Le Rond dAlembert, CNRS, UMR 7190, F-78210 St Cyr Lecole, France
[2] AGH Univ Sci & Technol, Fac Energy & Fuels, PL-30059 Krakow, Poland
[3] Norwegian Univ Sci & Technol NTNU, Dept Chem Engn, N-7491 Trondheim, Norway
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2021年 / 46卷 / 34期
关键词：
Hydrotalcite; Nickel; Vanadium; Basicity; LOW-TEMPERATURE; NI CATALYSTS; NICKEL; METAL; OXIDES; HYDROXIDES; OXIDATION; IMPACTS; SUPPORT; FE;
D O I：
10.1016/j.ijhydene.2021.02.172
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 series of V-promoted hydrotalcite-derived nickel catalysts (1.0, 2.0, and 4.0 wt%) were tested in CO2 methanation. Ni-I-V2.0 with 2.0 wt% vanadium loading showed the highest catalytic activity, achieving 74.7% of CO2 conversion and 100% of CH4 selectivity at 300 ?C. XRD and XANES analyses showed that the smallest Ni0 particles in Ni-I-V2.0 were consistent with the improved textural features observed for this catalyst. Moreover, CO2TPD revealed the highest sum of weak and medium basic sites in Ni-I-V2.0 that can positively influence catalytic behavior. For the studied catalysts, a clear correlation was demonstrated between the catalytic activity and specific surface area, as well as the basic properties. ? 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：17776 / 17783
页数：8
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