Mesoporous TiO2 Support Materials for Ru-Based CO2 Methanation Catalysts

2019 ◽  
Vol 2 (5) ◽  
pp. 3220-3230 ◽  
Author(s):  
Ara Kim ◽  
Clément Sanchez ◽  
Bernard Haye ◽  
Cédric Boissière ◽  
Capucine Sassoye ◽  
...  
Keyword(s):  
Mesoporous Tio2 ◽  
Co2 Methanation ◽  
Support Materials ◽  
Tio2 Support

Ru nanoparticles supported on amorphous ZrO2 for CO2 methanation

2020 ◽  
Vol 10 (14) ◽  
pp. 4522-4531 ◽  
Author(s):  
Hironori Nagase ◽  
Rei Naito ◽  
Shohei Tada ◽  
Ryuji Kikuchi ◽  
Kakeru Fujiwara ◽  
...  
Keyword(s):  
Co2 Methanation ◽  
Preparation Methods ◽  
Support Materials ◽  
Ru Nanoparticles ◽  
Methanation Activity

The influence of support materials and preparation methods on CO2 methanation activity was investigated using Ru nanoparticles supported on amorphous ZrO2 (am-ZrO2), crystalline ZrO2 (cr-ZrO2), and SiO2.

scholarly journals Selective CO2 methanation on Ru/TiO2 catalysts: unravelling the decisive role of the TiO2 support crystal structure

2016 ◽  
Vol 6 (22) ◽  
pp. 8117-8128 ◽  
Author(s):  
A. Kim ◽  
C. Sanchez ◽  
G. Patriarche ◽  
O. Ersen ◽  
S. Moldovan ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Decisive Role ◽  
Heat Treatments ◽  
Co2 Methanation ◽  
Tio2 Support ◽  
Morphology Changes

The performance of Ru/TiO2 methanation catalysts is dictated by the morphology changes occurring during heat treatments, themselves depending on support crystallinity.

Growth of CdS Nanocrystals within Mesoporous TIO2 Films by using Cadmium Thiolate Derivatives as Unimolecular Precursors

2008 ◽  
Author(s):  
Vincenzo Resta ◽  
Anna Maria Laera ◽  
Maria Cristina Ferrara ◽  
Emanuela Piscopiello ◽  
Saverio Mazzarelli ◽  
...  
Keyword(s):  
Mesoporous Tio2 ◽  
Tio2 Films ◽  
Cds Nanocrystals ◽  
Mesoporous Tio2 Films

Employing Exfoliated Graphite as Novel Support Material for Heterogeneous Model Catalysts

2019 ◽  
Author(s):  
Moritz Wolf ◽  
Nico Fischer ◽  
Michael Claeys
Keyword(s):  
Surface Area ◽  
Graphite Powder ◽  
Model Catalysts ◽  
Model Systems ◽  
Exfoliated Graphite ◽  
Support Material ◽  
Heterogeneous Model ◽  
Support Materials ◽  
Metal Support Interaction ◽  
Catalyst Systems

<p>The inert nature of graphitic samples allows for characterisation of rather isolated supported nanoparticles in model catalysts, as long as sufficiently large inter-particle distances are obtained. However, the low surface area of graphite and the little interaction with nanoparticles result in a challenging application of conventional preparation routes in practice. In the present study, a set of graphitic carbon materials was characterised in order to identify potential support materials for the preparation of model catalyst systems. Various sizes of well-defined Co<sub>3</sub>O<sub>4</sub> nanoparticles were synthesised separately and supported onto exfoliated graphite powder, that is graphite after solvent-assisted exfoliation <i>via</i> ultrasonication resulting in thinner flakes with increased specific surface area. The developed model catalysts are ideally suited for sintering studies of isolated nano-sized cobaltous particles as the graphitic support material does not provide distinct metal-support interaction. Furthermore, the differently sized cobaltous particles in the various model systems render possible studies on structural dependencies of activity, selectivity, and deactivation in cobalt oxide or cobalt catalysed reactions.</p>

Lewis Acid Site-Promoted Single-Atomic Cu Catalyzes Electrochemical CO2 Methanation

Nano Letters ◽  
2021 ◽  
Author(s):  
Shenghua Chen ◽  
Bingqing Wang ◽  
Jiexin Zhu ◽  
Liqiang Wang ◽  
Honghui Ou ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Acid Site ◽  
Lewis Acid Site ◽  
Co2 Methanation

scholarly journals Sample Environment for Operando Hard X-ray Tomography—An Enabling Technology for Multimodal Characterization in Heterogeneous Catalysis

Catalysts ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 459
Author(s):  
Johannes Becher ◽  
Sebastian Weber ◽  
Dario Ferreira Sanchez ◽  
Dmitry E. Doronkin ◽  
Jan Garrevoet ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Synchrotron Radiation ◽  
Contrast Imaging ◽  
Co2 Methanation ◽  
Full Field ◽  
X Ray ◽  
Spatially Resolved ◽  
Oxidation Of Methane ◽  
Unique Source ◽  
Sample Environment

Structure–activity relations in heterogeneous catalysis can be revealed through in situ and operando measurements of catalysts in their active state. While hard X-ray tomography is an ideal method for non-invasive, multimodal 3D structural characterization on the micron to nm scale, performing tomography under controlled gas and temperature conditions is challenging. Here, we present a flexible sample environment for operando hard X-ray tomography at synchrotron radiation sources. The setup features are discussed, with demonstrations of operando powder X-ray diffraction tomography (XRD-CT) and energy-dispersive tomographic X-ray absorption spectroscopy (ED-XAS-CT). Catalysts for CO2 methanation and partial oxidation of methane are shown as case studies. The setup can be adapted for different hard X-ray microscopy, spectroscopy, or scattering synchrotron radiation beamlines, is compatible with absorption, diffraction, fluorescence, and phase-contrast imaging, and can operate with scanning focused beam or full-field acquisition mode. We present an accessible methodology for operando hard X-ray tomography studies, which offer a unique source of 3D spatially resolved characterization data unavailable to contemporary methods.

Remarkably efficient and stable Ni/Y2O3 catalysts for CO2 methanation: Effect citric acid addition

2021 ◽  
pp. 120206
Author(s):  
Yingying Li ◽  
Yong Men ◽  
Shuang Liu ◽  
Jinguo Wang ◽  
Kang Wang ◽  
...  
Keyword(s):  
Citric Acid ◽  
Co2 Methanation ◽  
Acid Addition

Enhanced electrical properties of Li-salts doped mesoporous TiO2 in perovskite solar cells

Joule ◽  
2021 ◽  
Vol 5 (3) ◽  
pp. 659-672
Author(s):  
Minjin Kim ◽  
In-woo Choi ◽  
Seung Ju Choi ◽  
Ji Won Song ◽  
Sung-In Mo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electrical Properties ◽  
Perovskite Solar Cells ◽  
Mesoporous Tio2
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