Probing Metal–Support Interaction in Reactive Environments: An in Situ Study of PtCo Bimetallic Nanoparticles Supported on TiO2

2012 ◽  
Vol 116 (27) ◽  
pp. 14342-14349 ◽  
Author(s):  
V. Papaefthimiou ◽  
T. Dintzer ◽  
M. Lebedeva ◽  
D. Teschner ◽  
M. Hävecker ◽  
...  
Keyword(s):  
Bimetallic Nanoparticles ◽  
Support Interaction ◽  
In Situ Study ◽  
Metal Support Interaction ◽  
Metal Support

Strong metal-support interaction in Ni/TiO2 catalysts: in situ EXAFS and related studies

1993 ◽  
Vol 17 (1-2) ◽  
pp. 29-37 ◽  
Author(s):  
T. Arunarkavalli ◽  
G. U. Kulkarni ◽  
G. Sankar ◽  
C. N. R. Rao
Keyword(s):  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support ◽  
In Situ Exafs ◽  
Strong Metal Support Interaction

Enhancing metal–support interaction by in situ ion-exchanging strategy for high performance Pt catalysts in hydrogen evolution reaction

2020 ◽  
Vol 8 (32) ◽  
pp. 16582-16589 ◽  
Author(s):  
Xulei Sui ◽  
Lei Zhang ◽  
Junjie Li ◽  
Kieran Doyle-Davis ◽  
Ruying Li ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
High Performance ◽  
Pt Catalysts ◽  
Acidic Media ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Metal Support Interactions

A facile in situ ion-exchanging strategy directly enhances metal–support interactions between Pt and support and promotes HER electrocatalytic performance in acidic media.

scholarly journals The role of metal–support interaction for CO-free hydrogen from low temperature ethanol steam reforming on Rh–Fe catalysts

2017 ◽  
Vol 19 (6) ◽  
pp. 4199-4207 ◽  
Author(s):  
Catherine K. S. Choong ◽  
Luwei Chen ◽  
Yonghua Du ◽  
Martin Schreyer ◽  
S. W. Daniel Ong ◽  
...  
Keyword(s):  
Steam Reforming ◽  
Active Sites ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Free Hydrogen ◽  
Metal Support ◽  
Fe Catalysts ◽  
Ethanol Steam

Effect of metal–support interaction on the generation of Rh–FexOy active sites is investigated via various in situ techniques.

Strong metal–support interactions of Co-based catalysts facilitated by dopamine for highly efficient ammonia synthesis: in situ XPS and XAFS spectroscopy coupled with TPD studies

2019 ◽  
Vol 55 (4) ◽  
pp. 474-477 ◽  
Author(s):  
Xiuyun Wang ◽  
Lingling Li ◽  
Tianhua Zhang ◽  
Bingyu Lin ◽  
Jun Ni ◽  
...  
Keyword(s):  
Ammonia Synthesis ◽  
Xafs Spectroscopy ◽  
Support Interaction ◽  
In Situ Xps ◽  
Metal Support Interaction ◽  
New Strategy ◽  
Metal Support ◽  
Metal Support Interactions ◽  
Co Nanoparticles

We report a new strategy for strengthening metal–support interaction and stabilizing Co nanoparticles at high temperature.

scholarly journals Reversing sintering effect of Ni particles on γ-Mo2N via strong metal support interaction

2021 ◽  
Author(s):  
Lili Lin ◽  
Jinjia Liu ◽  
Xi Liu ◽  
Zirui Gao ◽  
Ning Rui ◽  
...  
Keyword(s):  
Ambient Pressure ◽  
Experimental Studies ◽  
Two Dimensional ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Ni Clusters ◽  
Strong Metal Support Interaction ◽  
Sintering Effect

Abstract The reverse sintering effect of Ni particles under thermal treatment has been observed in the Ni/γ-Mo2N catalysts. The ab initio molecular dynamic simulation has demonstrated the redispersion of metallic Ni particles into under-coordinated two-dimensional Ni clusters over γ-Mo2N is a thermodynamically favorable process. Utilizing pre-synthesized 4 nm Ni nanoparticles as the loaded particles, a Ni-4nm/γ-Mo2N model catalyst was synthesized and used to study the reverse sintering effect by the combination of multiple in-situ characterization methods, including in-situ quick XANES and EXAFS, ambient pressure XPS and environmental SE/STEM etc. The theoretical and experimental studies both confirmed the reverse sintering effect in the Ni-γ-Mo2N system is driven by the strong metal-support interaction between Ni and γ-Mo2N. The potential application of the reverse sintering effect in heterogeneous catalysis has been realized using the high temperature favored CO2 hydrogenation reaction. The under-coordinated two-dimensional layered Ni clusters on molybdenum nitride support generated from the Ni-4nm/γ-Mo2N has been demonstrated to be a thermally stable catalyst in 50 h stability test, and exhibits a remarkable catalytic selectivity reverse compared with traditional Ni based catalyst, leading to a chemo-specific CO2 hydrogenation to CO.

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