نتایج جستجو برای: catalytic co oxidation

تعداد نتایج: 507871  

Journal: :Chemical communications 2014
Jia Wang Hongyang Liu Xianmo Gu Haihua Wang Dang Sheng Su

Nitrogen-containing ordered mesoporous carbon (NOMC) was synthesized by using m-aminophenol (MAP) as a carbon and nitrogen co-precursor via a co-assembly process with F127 in aqueous phase and exhibited a good catalytic performance for selective oxidation of ethylbenzene.

Journal: :Chemical communications 2009
Yoichi Ishida Tatsuya Ebashi Shin-ichi Ito Takeshi Kubota Kimio Kunimori Keiichi Tomishige

Clusters of ReO(x) are formed and attached to Pt metal particles during H(2) reduction treatment on Pt-ReO(x)/SiO(2), and the synergy between Pt metal surface and neighboring ReO(x) clusters gives high catalytic performance in the preferential CO oxidation in the presence of H(2)O and CO(2) as more realistic reaction conditions at low reaction temperature.

2016
Simone Piccinin Michail Stamatakis

Using a kinetic Monte Carlo (KMC) approach with parameters derived from first-principles calculations, we modeled the steady-state of CO oxidation on Pd(111), a prototypical catalytic system with various practical applications, including the treatment of automotive gas exhausts. Focusing on the metallic phase of the catalyst, we studied how the rate of CO oxidation depends on temperature and pr...

Journal: :Nanoscale 2014
Jiaying Han Feifei Han Jin Ouyang Lixin He Yantu Zhang Na Na

Based on cataluminescence from plasma-assisted catalytic oxidation, a low temperature CO sensor was fabricated. With Ag doped alkaline-earth catalyst as sensing element, air as discharge gas, carrier gas and oxidant supplier, significant cataluminescence was achieved at low temperature, demonstrating a potential low-consumption and portable sensor of CO.

Journal: :The Journal of chemical physics 2013
Min Gao Andrey Lyalin Tetsuya Taketsugu

The mechanism of CO oxidation by O(2) on Au atoms supported on the pristine and defected hexagonal boron nitride (h-BN) surface has been studied theoretically using density functional theory. It is found that O(2) binds stronger than CO on an Au atom supported on the defect free h-BN surface and h-BN surface with nitrogen vacancy (V(N)@h-BN), but weaker than CO on a free Au atom or Au trapped b...

2017
Abdallah F. Zedan Nageh K. Allam Siham Y. AlQaradawi Xiaoguang Duan

Supported copper oxide nanoparticles have attracted considerable attention as active and non-precious catalysts for many catalytic oxidation reactions. Herein, mesoporous xCuO-TiO2 nanotube catalysts were fabricated, and their activity and kinetics toward CO oxidation were studied. The morphology and structure of the prepared catalysts were systematically studied using SEM, TEM, EDS, EDX, XRD, ...

Journal: :Molecules 2016
Mirella Gutiérrez-Arzaluz Luis Noreña-Franco Saúl Ángel-Cuevas Violeta Mugica-Álvarez Miguel Torres-Rodríguez

We report the synthesis of cerium oxide, cobalt oxide, mixed cerium, and cobalt oxides and a Ce-Co/Al₂O₃ membrane, which are employed as catalysts for the catalytic wet oxidation (CWO) reaction process and the removal of formaldehyde from industrial effluents. Formaldehyde is present in numerous waste streams from the chemical industry in a concentration low enough to make its recovery not econ...

Journal: :The Journal of chemical physics 2009
M Pineda R Toral

The influence of external noise on minimalistic models for the catalytic CO oxidation on Ir(111) and Pt(111) is studied by means of the adiabatic elimination technique. Two models, which reproduce the bistable behavior usually observed in CO oxidation on Pt group metal surfaces, are analyzed. The noise is superposed on the fraction of CO in the constant gas flow directed at the surfaces and the...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2011
mostafa feyzi ali akbar mirzaei

a series of x(co, mn)/tio2 catalysts (x=2–12wt.%) containing 25%co and 75%mn were prepared by the co-impregnation method. all prepared catalysts have been tested in fischer-tropsch synthesis for production of c2-c4 olefins. it was found that the catalyst containing 8wt.%(co,mn)/tio2 is an optimal catalyst for production of c2-c4 olefins. the effect of operation conditions such as the h2/co mola...

Journal: :Journal of the American Chemical Society 2006
Mingshu Chen Yun Cai Zhen Yan D Wayne Goodman

The unique catalytic activity of supported Au nanoparticles has been ascribed to various effects including thickness/shape, the metal oxidation state, and support effects. Previously, we reported the synthesis of ordered Au monolayers and bilayers on TiO(x), with the latter being significantly more active for CO oxidation than the former. In the present study, the electronic and chemical proper...

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