Unveiling the Role of Atomically Dispersed Active Sites over Amorphous Iron Oxide Supported Pt Catalysts for Complete Catalytic Ozonation of Toluene at Low Temperature

2021 ◽  
Author(s):  
Rui Liu ◽  
Shejiang Liu ◽  
Hui Ding ◽  
Dan Zhao ◽  
Jianfeng Fu ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Low Temperature ◽  
Active Sites ◽  
Catalytic Ozonation ◽  
Pt Catalysts ◽  
Amorphous Iron ◽  
Supported Pt Catalysts

The role of iron oxide in the highly effective Fe-modified Co3O4 catalyst for low-temperature CO oxidation

RSC Advances ◽  
2013 ◽  
Vol 3 (30) ◽  
pp. 12409 ◽  
Author(s):  
Jie Li ◽  
Guanzhong Lu ◽  
Guisheng Wu ◽  
Dongsen Mao ◽  
Yanglong Guo ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Low Temperature ◽  
Co Oxidation ◽  
Highly Effective ◽  
Low Temperature Co Oxidation

Unique Role of Anchoring Penta-Coordinated Al3+ Sites in the Sintering of γ-Al2O3-Supported Pt Catalysts

2010 ◽  
Vol 1 (18) ◽  
pp. 2688-2691 ◽  
Author(s):  
Donghai Mei ◽  
Ja Hun Kwak ◽  
Jianzhi Hu ◽  
Sung June Cho ◽  
János Szanyi ◽  
...  
Keyword(s):  
Pt Catalysts ◽  
Unique Role ◽  
Supported Pt Catalysts

A Single Turnover (STO) Characterization of Supported Palladium Catalysts

1987 ◽  
Vol 111 ◽  
Author(s):  
Robert L. Augustine ◽  
David R. Baum
Keyword(s):  
Palladium Catalysts ◽  
Active Sites ◽  
Pt Catalyst ◽  
Catalyst Characterization ◽  
Pt Catalysts ◽  
Ambient Conditions ◽  
Reaction Conditions ◽  
Pd Catalysts ◽  
Supported Pt Catalysts

AbstractWhile the STO catalyst characterization procedure has been applied to a variety of supported Pt catalysts, application of this technique to the characterization of supported Pd catalysts showed that there were several significant differences between the Pt and the Pd catalysts. Under STO reaction conditions each surface site on a Pt catalyst reacts only once so there is a 1:1 relationship between the product composition and the densities of the various types of active sites present. With Pd catalysts under these same conditions, alkene isomerization takes place so readily that the amount of isomerized product formed depends on the contact time of the reactant pulse with the catalyst so there is no direct relationship between the amount of isomerization and the number of isomerization sites present. On Pt there are some direct saturation sites present on which H2 is rather weakly held. Such sites are not present on Pd catalysts. The reactive surface of supported Pt catalysts remains constant on long exposure to air. With Pd catalysts exposure to air results in a decrease in saturation site densities which can be reversed by re-reduction of the surface with H2 under ambient conditions but not completely under what can be termed “reaction conditions” where the extent of surface re-reduction decreases with catalyst age.

scholarly journals Promotional effect of metal encapsulation on reactivity of iron oxide supported Pt catalysts

2011 ◽  
Vol 391 (1-2) ◽  
pp. 407-410 ◽  
Author(s):  
M. Lewandowski ◽  
Y.N. Sun ◽  
Z.-H. Qin ◽  
S. Shaikhutdinov ◽  
H.-J. Freund
Keyword(s):  
Iron Oxide ◽  
Pt Catalysts ◽  
Promotional Effect ◽  
Supported Pt Catalysts

scholarly journals Identification of active sites in CO oxidation and water-gas shift over supported Pt catalysts

Science ◽  
2015 ◽  
Vol 350 (6257) ◽  
pp. 189-192 ◽  
Author(s):  
K. Ding ◽  
A. Gulec ◽  
A. M. Johnson ◽  
N. M. Schweitzer ◽  
G. D. Stucky ◽  
...  
Keyword(s):  
Co Oxidation ◽  
Active Sites ◽  
Water Gas Shift ◽  
Pt Catalysts ◽  
Supported Pt Catalysts ◽  
Water Gas
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