The Influence of ZnO-ZrO2 Interface in Hydrogenation of CO2 to CH3OH
OPEN ACCESS
Author / Producer
Date
2022-03
Publication Type
Journal Article
ETH Bibliography
yes
Citations
Altmetric
OPEN ACCESS
Data
Abstract
The influence of the interface in ZnO-ZrO2 catalysts for the selective hydrogenation of CO2 to CH3OH is investigated. Specifically, we perturbed its structure using two different synthetic methods: surface organometallic chemistry (SOMC) and flame-spray pyrolysis (FSP) and investigated the speciation of the resulting materials by spectroscopic techniques, such as XAS, NMR, IR, UV-Vis, and EPR. The results indicate that oxidic Zn particles that co-exist with ZrO2, as synthesized by FSP, show a superior selectivity in contrast to Zn(0) nanoparticles or Zn(II) single sites on ZrO2, formed using SOMC. Further experiments underlined the importance of the ZnO-ZrO2 interface in the process: only materials with such an interface exhibit highly selective production of CH3OH, proceeding likely via the formation of the surface CH3O intermediates.
Permanent link
Publication status
published
External links
Editor
Book title
Journal / series
Volume
105 (3)
Pages / Article No.
Publisher
Wiley‐VHCA
Event
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
carbon dioxide; catalysis; hydrogenation; methanol; spectroscopy; zirconium
Organisational unit
03510 - Pratsinis, Sotiris E. (emeritus) / Pratsinis, Sotiris E. (emeritus)
03872 - Copéret, Christophe / Copéret, Christophe
Notes
Funding
ETH-05 19-2 - Personalized indoor air quality monitoring with room-temperature filter-sensor arrays (ETHZ)
170729 - Integrated system for in operando characterization and development of portable breath analyzers (SNF)
170729 - Integrated system for in operando characterization and development of portable breath analyzers (SNF)