Journal ArticleDOI
EPR techniques applied to the study of chemistry and catalysis on oxide surfaces
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In this article, the use of electron paramagnetic resonance (EPR) spectroscopy to study the chemistry of oxide surfaces and catalysis is discussed, focusing on those aspects of the techniques that are directly related to the specificity of heterogeneous systems, investigations of surfaces and catalytic reactions.Abstract:
The use of electron paramagnetic resonance (EPR) spectroscopy to study the chemistry of oxide surfaces and catalysis is discussed. Emphasis is placed on those aspects of the techniques that are directly related to the specificity of heterogeneous systems, investigations of surfaces and catalytic reactions. The characteristic features of EPR spectra of high-surface oxide materials are analyzed, and the typical means employed to increase the amount of extractable information are presented. A brief survey of new potentialities of continuous-wave EPR and typical applications is also provided.read more
Citations
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Application of the genetic algorithm joint with the Powell method to nonlinear least-squares fitting of powder EPR spectra.
TL;DR: The application of the stochastic genetic algorithm in conjunction with the deterministic Powell search to analysis of the multicomponent powder EPR spectra based on computer simulation allows for automated extraction of the magnetic parameters and relative abundances of the component signals, from the nonlinear least-squares fitting of experimental spectra, with minimum outside intervention.
Journal ArticleDOI
The Role of the Liquid‐Solid Interface in the Preparation of Supported Catalysts
TL;DR: In this paper, the contribution of the Interface Science to the preparation of supported catalysts during the last two decades is presented and illustrated how the concepts and the methodologies of the interface science could be effectively used for an in-depth understanding of the phenomena involved in the initial preparation step.
Journal ArticleDOI
Lower alkanes dehydrogenation: Strategies and reaction routes to corresponding alkenes
TL;DR: In this article, a review of non-oxidative, autothermal and oxidative dehydrogenation of C 2 and C 3 alkenes is presented, where the authors examine reaction routes to de-hydrogenation and analyze the C-H activation mechanism of commercial catalysts.
Journal ArticleDOI
Efficient water oxidation under visible light by tuning surface defects on ceria nanorods
Kun Zhao,Jian Qi,Huajie Yin,Zumin Wang,Shenlong Zhao,Xiang Ma,Jiawei Wan,Lin Chang,Yan Gao,Ranbo Yu,Zhiyong Tang +10 more
TL;DR: In this paper, the authors show that the rich surface defects including surface oxygen vacancies and Ce3+ ions are the origin of the enhanced water oxidation performance of the CeO2 NRs treated under the reduced atmosphere.
Journal ArticleDOI
Application of EPR spectroscopy for elucidation of vanadium speciation in VO x /ZrO 2 catalysts subject to redox treatment
TL;DR: In this article, the performance of the new procedure has been benchmarked against common simplex method using the multi-component model and real EPR spectra of tetravalent vanadium in VO isEnabled x�� /ZrO2 catalysts.
References
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Metal Oxide Surfaces and Their Interactions with Aqueous Solutions and Microbial Organisms.
Gordon E. Brown,Victor E. Henrich,William H. Casey,David Clark,Carrick M. Eggleston,Andrew R. Felmy,D. Wayne Goodman,Michael Grätzel,Gary E. Maciel,Maureen I. McCarthy,Kenneth H. Nealson,Dimitri A. Sverjensky,Michael F. Toney,John M. Zachara +13 more
TL;DR: This poster presents a probabilistic procedure to constrain the number of particles in the response of the immune system to the presence of Tau.
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Phosphorus ligand exchange equilibriums on zerovalent nickel. Dominant role for steric effects
Journal ArticleDOI
Spin trapping and electron spin resonance detection of radical intermediates in the photodecomposition of water at titanium dioxide particulate systems
Calvin D. Jaeger,Allen J. Bard +1 more
TL;DR: In this article, a spin trap was used to detect free-radical intermediates formed during in situ irradiation of TiO/sub 2/ and platinized polysilicon powders in aqueous solution.
Journal ArticleDOI
A Theory of the Catalytic Surface
TL;DR: The theory of Bodenstein and Fink, based on kinetic studies, assumed that reaction velocity was determined by the rate of diffusion of reactant gases through a layer of gas adsorbed on the catalyst surface as discussed by the authors.
Book
Oxygen in catalysis
Adam Bielański,Jerzy Haber +1 more
TL;DR: In this article, a description of catalytic systems commonly used as model systems in the laboratory and as industrial catalysts in large-scale operations is given, as well as a discussion of the mechanisms operating in these reactions.