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

页码：17776 / 17783

页数：8

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