On the mechanism of the heterogeneous catalytic oxidation of aromatic hydrocarbons

1975 ◽  
Vol 2 (1-2) ◽  
pp. 143-149 ◽  
Author(s):  
Yu. I. Pyatnitskii ◽  
G. I. Golodets
Keyword(s):  
Catalytic Oxidation ◽  
Aromatic Hydrocarbons ◽  
Heterogeneous Catalytic

scholarly journals Electron donation of non-oxide supports boosts O2 activation on nano-platinum catalysts

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Tao Gan ◽  
Jingxiu Yang ◽  
David Morris ◽  
Xuefeng Chu ◽  
Peng Zhang ◽  
...  
Keyword(s):  
Catalytic Oxidation ◽  
Pt Nanoparticles ◽  
Catalytic Performance ◽  
Nitrogen Vacancy ◽  
Innovative Strategy ◽  
Oxide Supports ◽  
Heterogeneous Catalytic ◽  
Highly Active ◽  
Electron Sink ◽  
Nitrogen Vacancies

AbstractActivation of O2 is a critical step in heterogeneous catalytic oxidation. Here, the concept of increased electron donors induced by nitrogen vacancy is adopted to propose an efficient strategy to develop highly active and stable catalysts for molecular O2 activation. Carbon nitride with nitrogen vacancies is prepared to serve as a support as well as electron sink to construct a synergistic catalyst with Pt nanoparticles. Extensive characterizations combined with the first-principles calculations reveal that nitrogen vacancies with excess electrons could effectively stabilize metallic Pt nanoparticles by strong p-d coupling. The Pt atoms and the dangling carbon atoms surround the vacancy can synergistically donate electrons to the antibonding orbital of the adsorbed O2. This synergistic catalyst shows great enhancement of catalytic performance and durability in toluene oxidation. The introduction of electron-rich non-oxide substrate is an innovative strategy to develop active Pt-based oxidation catalysts, which could be conceivably extended to a variety of metal-based catalysts for catalytic oxidation.

CATALYTIC OXIDATION OF MODEL WASTE AROMATIC HYDROCARBONS IN A DENSE FLUID

1991 ◽  
Vol 110 (1) ◽  
pp. 85-97 ◽  
Author(s):  
TIEN-HAI PANG ◽  
MINGHUA YE ◽  
F. CARL KNOPF ◽  
KERRY M. DOOLEY
Keyword(s):  
Catalytic Oxidation ◽  
Aromatic Hydrocarbons ◽  
Dense Fluid

Heterogeneous catalytic oxidation of neptunium(IV) in nitric acid solutions

2003 ◽  
Vol 91 (9) ◽  
Author(s):  
A. V. Ananiev ◽  
V.P. Shilov ◽  
Ph. Moisy ◽  
Charles Madic
Keyword(s):  
Nitric Acid ◽  
Catalytic Oxidation ◽  
Acid Solutions ◽  
Heterogeneous Catalytic ◽  
Nitric Acid Solutions

SummaryNeptunium(IV), being quite stable in 0.5–3M HNO

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