An EXAFS study of the structure of the metal–support interface in highly dispersed Rh/Al2O3catalysts

1985 ◽  
Vol 82 (12) ◽  
pp. 5742-5754 ◽  
Author(s):  
J. B. A. D. van Zon ◽  
D. C. Koningsberger ◽  
H. F. J. van’t Blik ◽  
D. E. Sayers
Keyword(s):  
Highly Dispersed ◽  
Metal Support ◽  
Exafs Study

On the origin of high-temperature phenomena in Pt/Al2O3

2018 ◽  
Vol 20 (4) ◽  
pp. 2339-2350 ◽  
Author(s):  
Alexander S. Lisitsyn ◽  
Olga A. Yakovina
Keyword(s):  
High Temperature ◽  
Metal Particles ◽  
Complex Interplay ◽  
Dynamic Changes ◽  
Highly Dispersed ◽  
Metal Support

This study shows a complex interplay between the adsorbate, metal particles and underlying support, which causes dynamic changes at the metal–support interface and governs the behavior and properties of highly-dispersed nanosystems.

scholarly journals Plasma Promotes Dry Reforming Reaction of CH4 and CO2 at Room Temperature with Highly Dispersed NiO/γ-Al2O3 Catalyst

Catalysts ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1433
Author(s):  
Shan-Shan Lin ◽  
Peng-Rui Li ◽  
Hui-Bo Jiang ◽  
Jian-Feng Diao ◽  
Zhong-Ning Xu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Particle Size ◽  
Room Temperature ◽  
Dry Reforming ◽  
Impregnation Method ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Highly Dispersed ◽  
Metal Support ◽  
Al2o3 Catalyst

Plasma is an efficient method that can activate inert molecules such as methane and carbon dioxide in a mild environment to make them reactive. In this work, we have prepared an AE-NiO/γ-Al2O3 catalyst using an ammonia-evaporation method for plasma promoted dry reforming reaction of CO2 and CH4 at room temperature. According to the characterization data of XRD, H2-TPR, TEM, XPS, etc., the AE-NiO/γ-Al2O3 catalyst has higher dispersion, smaller particle size and stronger metal-support interaction than the catalyst prepared by the traditional impregnation method. In addition, the AE-NiO/γ-Al2O3 catalyst also exhibits higher activity in dry reforming reaction. This work provides a feasible reference experience for the research of plasma promoted dry reforming reaction catalysts at room temperature.

Mechanism of NO–CO reaction over highly dispersed cuprous oxide on γ-alumina catalyst using a metal–support interfacial site in the presence of oxygen: similarities to and differences from biological systems

2018 ◽  
Vol 8 (15) ◽  
pp. 3833-3845 ◽  
Author(s):  
Ryoichi Fukuda ◽  
Shogo Sakai ◽  
Nozomi Takagi ◽  
Masafuyu Matsui ◽  
Masahiro Ehara ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Cuprous Oxide ◽  
Cluster Model ◽  
Biological Systems ◽  
Alumina Catalyst ◽  
Highly Dispersed ◽  
Metal Support

The NO–CO reaction mechanism over the Cu/γ-Al2O3 catalyst was elucidated using DFT and a cluster model.

On the detection with EXAFS of metal‐support oxygen bonds in a highly dispersed rhodium on alumina catalyst

1984 ◽  
Vol 80 (8) ◽  
pp. 3914-3915 ◽  
Author(s):  
J. B. A. D. van Zon ◽  
D. C. Koningsberger ◽  
H. F. J. van’t Blik ◽  
R. Prins ◽  
D. E. Sayers
Keyword(s):  
Alumina Catalyst ◽  
Highly Dispersed ◽  
Metal Support

Mesoporous Ni/Ce1−xNixO2−y heterostructure as an efficient catalyst for converting greenhouse gas to H2 and syngas

2016 ◽  
Vol 6 (3) ◽  
pp. 851-862 ◽  
Author(s):  
Jie Deng ◽  
Wei Chu ◽  
Bo Wang ◽  
Wen Yang ◽  
X. S. Zhao
Keyword(s):  
Solid Solution ◽  
Greenhouse Gas ◽  
Redox Properties ◽  
Ni Nanoparticles ◽  
Efficient Catalyst ◽  
Highly Dispersed ◽  
Metal Support ◽  
Thermo Stability

A heterostructure of highly dispersed Ni nanoparticles in pore channels of Ni–CeO2 solid solution, having excellent thermo-stability, redox properties, and metal/support synergy, is identified as an efficient nanocatalyst for converting greenhouse gas into H2 energy and syngas.

Electrochemically enhanced metal-support interaction of highly dispersed Ru nanoparticles with a CeO2 support

2014 ◽  
Vol 318 ◽  
pp. 85-94 ◽  
Author(s):  
H.A.E. Dole ◽  
L.F. Safady ◽  
S. Ntais ◽  
M. Couillard ◽  
E.A. Baranova
Keyword(s):  
Support Interaction ◽  
Ru Nanoparticles ◽  
Metal Support Interaction ◽  
Highly Dispersed ◽  
Metal Support

Mössbauer and Exafs Study of 57Fe Labelled Pt/SiO2 Catalysts

1987 ◽  
Vol 111 ◽  
Author(s):  
J. A. Sawicki ◽  
J. H. Rolston ◽  
S. R. Julian ◽  
T. Tyliszczak ◽  
K. D. McCrimmon
Keyword(s):  
Carbon Monoxide ◽  
Nitrate Solution ◽  
Ferric Nitrate ◽  
Ambient Temperatures ◽  
Highly Dispersed ◽  
Exafs Study ◽  
Microstructural Studies ◽  
Ferric Nitrate Solution ◽  
Absorption Measurements

AbstractSpecimens of highly dispersed Pt/Silicalite catalyst, decorated with 57Fe by impregnation in aqueous ferric nitrate solution, have been studied after decoration, and various pretreatments including exposure to carbon monoxide, by in situ Mössbauer spectroscopy. The form of Pt was followed by EXAFS analysis near the Pt LIII edge. The microstructural studies were combined with CO chemisorption and infrared absorption measurements. It is observed that iron in Pt clusters is very reactive even at ambient temperatures and that the interaction of Fe with CO is strongly accelerated by platinum.

Sign in / Sign up

Export Citation Format

Share Document