Download PDF by Umit S. Ozkan: Design of heterogeneous catalysts : new approaches based on

By Umit S. Ozkan

ISBN-10: 3527320792

ISBN-13: 9783527320790

This long-awaited reference resource is the 1st ebook to target this crucial and scorching subject. As such, it offers examples from a big selection of fields the place catalyst layout has been in keeping with new insights and knowing, featuring such glossy and critical subject matters as self-assembly, nature-inspired catalysis, nano-scale structure of surfaces and theoretical equipment. With its inclusion of all of the precious and robust instruments for the rational layout of catalysts, this can be a real "must have" publication for each researcher within the box.

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New PDF release: Design of heterogeneous catalysts : new approaches based on

This long-awaited reference resource is the 1st publication to target this significant and scorching subject. As such, it offers examples from a wide range of fields the place catalyst layout has been according to new insights and knowing, offering such sleek and significant subject matters as self-assembly, nature-inspired catalysis, nano-scale structure of surfaces and theoretical tools.

Extra info for Design of heterogeneous catalysts : new approaches based on synthesis, characterization and modeling

Example text

4 Active Oxygen Species assignment to electrophilic (labile) and nucleophilic (stable) oxygen is tentative but the fact that desorption of the nucleophilic species coincides with the reaction temperature and the knowledge that both species can be found by spectroscopy [155, 175] lend some support to this interpretation. The recent enormous progress in preparing and studying surface science qualities of relevant systems [178–180] such as vanadium oxides plus their defects has given further clear evidence that electrophilic weakly bound oxygen [83] as well as more stable defect-related oxygen [48, 181–183] do exist and exhibit a reactivity much in parallel to high-performance catalysts of the monolayer type [184, 185].

For simplicity, the energy flow and its enabling functions are omitted from the diagram. The obvious fact that an explanation of the catalytic operation without its controlling influences on the nature of the active sites here is impossible manifests the “gap” phenomenon [254] encountered in many metal-catalyzed reactions when surface science data (deliberately omitting the material chemistry) are used to predict catalytic performances. 12 describes the catalytic operation of active sites. 4). 12 Wiring diagram of the mode of operation of the VPO system under steady state operation.

In compounds with multiple cation types (MMO) it was suggested that the electronegativity of M in M¼O groups would create the bond polarization [77, 162, 163]. Adsorbates with formal OÀ electron configurations can be particularly electrophilic [1, 2, 27, 142]. It is not excluded that all three situations co-exist on a complex oxide, thus allowing not for only two idealized oxygen species but for a distribution of reactivity of the prototype “nucleophilic” and “electrophilic”. This serves as the basis for assuming that multiple reaction pathways act in parallel on the same substrate.

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Design of heterogeneous catalysts : new approaches based on synthesis, characterization and modeling by Umit S. Ozkan


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