Operando Laboratory-Based Multi-Edge X-Ray Absorption Near-Edge Spectroscopy of Solid Catalysts

被引：21

作者：

Genz, Nina S. ^{[1
]}

Kallio, Antti-Jussi ^{[2
]}

Oord, Ramon ^{[1
]}

Krumeich, Frank ^{[3
]}

Pokle, Anuj ^{[4
]}

Prytz, Oystein ^{[4
]}

Olsbye, Unni ^{[5
]}

Meirer, Florian ^{[1
]}

Huotari, Simo ^{[2
]}

Weckhuysen, Bert M. ^{[1
]}

机构：

[1] Univ Utrecht, Inorgan Chem & Catalysis Grp, Dept Chem, Univ Weg 99, NL-3584 CG Utrecht, Netherlands

[2] Univ Helsinki, Dept Phys, POB 64, Helsinki 00014, Finland

[3] Swiss Fed Inst Technol, Lab Inorgan Chem, Dept Chem, Vladimir Prelog Weg 1, CH-8093 Zurich, Switzerland

[4] Univ Oslo, Dept Phys, Ctr Mat Sci & Nanotechnol, POB 1048, N-0316 Oslo, Norway

[5] Univ Oslo, Dept Chem, POB 1033, N-0315 Oslo, Norway

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2022年 / 61卷 / 48期

基金：

芬兰科学院;

关键词：

Alloys; CO2; Hydrogenation; Heterogeneous Catalysis; Multielement Catalysts; X-Ray Absorption Spectroscopy; CO2; HYDROGENATION; HETEROGENEOUS CATALYSTS; NI; METHANATION; SELECTIVITY; ALUMINA;

D O I：

10.1002/anie.202209334

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Laboratory-based X-ray absorption spectroscopy (XAS) and especially X-ray absorption near-edge structure (XANES) offers new opportunities in catalyst characterization and presents not only an alternative, but also a complementary approach to precious beamtime at synchrotron facilities. We successfully designed a laboratory-based setup for performing operando, quasi-simultaneous XANES analysis at multiple K-edges, more specifically, operando XANES of mono-, bi-, and trimetallic CO2 hydrogenation catalysts containing Ni, Fe, and Cu. Detailed operando XANES studies of the multielement solid catalysts revealed metal-dependent differences in the reducibility and re-oxidation behavior and their influence on the catalytic performance in CO2 hydrogenation. The applicability of operando laboratory-based XANES at multiple K-edges paves the way for advanced multielement catalyst characterization complementing detailed studies at synchrotron facilities.

引用

页数：8

共 49 条

[1] Simultaneous Speciation, Structure, and Equilibrium Constant Determination in the Ni2+-EDTA-CN1- Ternary System via High Resolution Laboratory X-ray Absorption Fine Structure Spectroscopy and Theoretical Calculations [J].