Study on the kinetics and mechanism of the catalytic oxidation reaction of Mn2+ using clinoptilolite supported δ-MnO2 nano-catalyst

2015 ◽  
Vol 94 ◽  
pp. 65-71 ◽  
Author(s):  
Maryamossadat Kazemi ◽  
Cavus Falamaki
Keyword(s):  
Catalytic Oxidation ◽  
Oxidation Reaction ◽  
Kinetics And Mechanism ◽  
Nano Catalyst

On Microfaceting Instability of Pt(110) Under Catalytic Oxidation of Adsorbed Co

1992 ◽  
Vol 263 ◽  
Author(s):  
M. Papoular
Keyword(s):  
Catalytic Oxidation ◽  
Oxidation Reaction ◽  
Nucleation And Growth ◽  
Point Of View ◽  
Momentum Balance ◽  
Layer By Layer ◽  
Adsorption Of Co ◽  
Specific Temperature ◽  
Energy And Momentum ◽  
Sawtooth Profile

ABSTRACTAs demonstrated by recent STM [1] and LEED [2] experiments the platinum (110) surface undergoes, at carbon monoxide submonolayer coverages, a phase transition from the 1 x 2 “missing-row” (reconstructed) state to the 1 x 1(bulk-like) state under specific temperature and partial-pressure conditions. The catalytic oxidation reaction CO + 1/2 → CO2 drives a microfaceting instability [3] [4] of the Pt(110) surface which ends up in a regular sawtooth profile with a period ≈ 200 Å, along the [110] direction.We introduce the idea that the rather extensive Pt mass transport, as involved in the process, could be energetically assisted by the reaction itself. Energy and momentum-balance considerations lead us to expect an energy ≲ 0.5 eV to be transferrable to thesubstrate. This should efficiently contribute to initiating the “scraping”process that leads to the microfaceted pattern.A simple model for nucleation and growth of facets is presented (see ref. 5), yielding characteristic times of order minutes (at T = 500 K), in fair agreement with experiment.Independently of the structural/catalytic problem, adsorption of CO at submonolayer coverages on, e.g., Pt(110) might be of interest from a surfactantphysics point of view (see ref. 6 for a very recent study on layer-by-layer homoepitaxial metal growth).

Kinetic Model of the 1,2-Propanediol Oxidation Reaction in the Presence of 3wt%Pd/α-Al2O3 Catalyst

2021 ◽  
Vol 903 ◽  
pp. 143-148
Author(s):  
Svetlana Cornaja ◽  
Svetlana Zhizhkuna ◽  
Jevgenija Vladiko
Keyword(s):  
Activation Energy ◽  
Lactic Acid ◽  
Kinetic Model ◽  
Catalytic Oxidation ◽  
Molecular Oxygen ◽  
Oxidation Reaction ◽  
Main Product ◽  
Oxidation Process ◽  
Water Solution ◽  
Reaction Conditions

Supported 3wt%Pd/α-Al₂O₃ catalyst was tested in selective oxidation of 1,2-propanediol by molecular oxygen. It was found that the catalyst is active in an alkaline water solution. Lactic acid was obtained as the main product of the reaction. Influence of different reaction conditions on 1,2-PDO conversion and oxidation process selectivity was studied. Partial kinetic orders of the reaction with respect to 1,2-propanediol, c0(NaOH), p(O2), n(1,2-PDO)/n(Pd)) were determined and an experimental kinetic model of the catalytic oxidation reaction was obtained. Activation energy of the process was calculated and was found to be about 53 ± 5 kJ/mol.

Reaction kinetics and mechanism of the catalytic oxidation of propane over Co–ZSM-5 zeolites

2022 ◽  
Author(s):  
Ralitsa Velinova ◽  
Bozhidar Grahovski ◽  
Hristo Kolev ◽  
Georgi Ivanov ◽  
Silviya Todorova ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Catalytic Oxidation ◽  
Kinetics And Mechanism

High stability three-dimensional porous PtSn nano-catalyst for ethanol electro-oxidation reaction

2020 ◽  
Vol 31 (9) ◽  
pp. 2491-2494
Author(s):  
Yue Sun ◽  
Haiyan Xiang ◽  
Huimin Li ◽  
Gang Yu ◽  
Hong Chen ◽  
...  
Keyword(s):  
Oxidation Reaction ◽  
High Stability ◽  
Three Dimensional ◽  
Nano Catalyst ◽  
Electro Oxidation

scholarly journals Research into the reaction process and the effect of reaction conditions on the simultaneous removal of H2S, COS and CS2 at low temperature

RSC Advances ◽  
2018 ◽  
Vol 8 (13) ◽  
pp. 6996-7004 ◽  
Author(s):  
Xin Sun ◽  
Haotian Ruan ◽  
Xin Song ◽  
Lina Sun ◽  
Kai Li ◽  
...  
Keyword(s):  
Low Temperature ◽  
Catalytic Oxidation ◽  
Oxidation Reaction ◽  
Reaction Process ◽  
Hydrolysis Reaction ◽  
Simultaneous Removal ◽  
Catalytic Hydrolysis ◽  
Reaction Conditions ◽  
Removal Processes

The removal processes of COS, CS2 and H2S could be divided into two parts: a catalytic hydrolysis reaction and a catalytic oxidation reaction.

Kinetics and Mechanism of Catalytic Oxidation of 2,6-Dimethylnaphthalene to 2,6-Naphthalenedicarboxylic Acid

2019 ◽  
Vol 58 (8) ◽  
pp. 2704-2716 ◽  
Author(s):  
Heng Ban ◽  
Shengdong Yang ◽  
Youwei Cheng ◽  
Lijun Wang ◽  
Xi Li
Keyword(s):  
Catalytic Oxidation ◽  
Kinetics And Mechanism

scholarly journals Kinetics and Mechanism of the Oxidation Reaction of Bis(μ-dibutyldithiocarbamato-S,S′)-digold(I) by Halogens

1978 ◽  
Vol 51 (12) ◽  
pp. 3530-3533 ◽  
Author(s):  
Hidetoshi Kita ◽  
Kazuyuki Itoh ◽  
Koji Tanaka ◽  
Toshio Tanaka
Keyword(s):  
Oxidation Reaction ◽  
Kinetics And Mechanism
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