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Catalysis role

Centi G, Perathoner S. Catalysis Role and challenges for a sustainable energy. Topics in Catalysis. 2009 52(8) 948-961. [Pg.301]

Enzyme Catalysis, Chemical Strategies for Enzyme Catalysis, Roles of Structural Dynamics in Enzymatic Cofactors Vitamins... [Pg.72]

Enzyme Catalysis Roles of Structural Dynamics in Techniques to Study Enzyme Kinetics DNA Replication An Overview... [Pg.1890]

Cytochrome P450 Monooxygenases, Chemistry of Enzyme Catalysis, Roles of Structural Dynamics in Enzyme Catalysis, Chemical Strategies for NAD+ Dependent Enzymes, Chemistry of Oxygen-Activating Enzymes, Chemistry of Transient State Enzyme Kinetics Flavoenzymes, Chemistry of... [Pg.2302]

Schindler, M., Ascaf, Y., Sharon, N., and Chipman, D. M. Mechanism of lysozyme catalysis role of ground-state strain in subsite D in hen egg and human lysozymes. Biochemistry 16, 423-431 (1977). [Pg.819]

Centi, G. and Perathoner, S. (2008) Catalysis role and challenges for a sustainability energy. Top. Catal., 52, 948 (Invited lecture at the conference Catalysis for Society , Cracow, Poland, May 12-15th, 2008). [Pg.190]

In many cases the metal ion and the binding of the ligands play an important catalytic role, and the study of this role is the main theme of the present monograph. This catalysis role can be in electron transfer only it can also be a complicated redox reaction, or a relatively simple acid-base reaction. The presence of the metal at the particular site usually results in activation reactions of substrates by the metal and the surrounding ligands. [Pg.251]

ELECTRON-TRANSFER-CHAIN CATALYSIS ROLE OF TRANSITION-METAL RADICALS, SIDE REACTIONS AND COUPLING WITH 0R6AN0METALLIC CATALYSIS... [Pg.277]

Electron-Transfer-Chain Catalysis Role of Transition-Metal Radicals, Side Reactions and Coupling with Organometallic Cateilysis... [Pg.675]

The methods have in turn launched the new fields of nanoscience and nanoteclmology, in which the manipulation and characterization of nanometre-scale structures play a crucial role. STM and related methods have also been applied with considerable success in established areas, such as tribology [2], catalysis [3], cell biology [4] and protein chemistry [4], extending our knowledge of these fields into the nanometre world they have, in addition, become a mainstay of surface analytical laboratories, in the worlds of both academia and industry. [Pg.1676]

The components in catalysts called promoters lack significant catalytic activity tliemselves, but tliey improve a catalyst by making it more active, selective, or stable. A chemical promoter is used in minute amounts (e.g., parts per million) and affects tlie chemistry of tlie catalysis by influencing or being part of tlie catalytic sites. A textural (structural) promoter, on tlie otlier hand, is used in massive amounts and usually plays a role such as stabilization of tlie catalyst, for instance, by reducing tlie tendency of tlie porous material to collapse or sinter and lose internal surface area, which is a mechanism of deactivation. [Pg.2702]

There is more to tire Wilkinson hydrogenation mechanism tlian tire cycle itself a number of species in tire cycle are drained away by reaction to fomi species outside tire cycle. Thus, for example, PPh (Ph is phenyl) drains rhodium from tire cycle and tlius it inliibits tire catalytic reaction (slows it down). However, PPh plays anotlier, essential role—it is part of tire catalytically active species and, as an electron-donor ligand, it affects tire reactivities of tire intemiediates in tire cycle in such a way tliat tliey react rapidly and lead to catalysis. Thus, tliere is a tradeoff tliat implies an optimum ratio of PPh to Rli. [Pg.2703]

Inspired by the many hydrolytically-active metallo enzymes encountered in nature, extensive studies have been performed on so-called metallo micelles. These investigations usually focus on mixed micelles of a common surfactant together with a special chelating surfactant that exhibits a high affinity for transition-metal ions. These aggregates can have remarkable catalytic effects on the hydrolysis of activated carboxylic acid esters, phosphate esters and amides. In these reactions the exact role of the metal ion is not clear and may vary from one system to another. However, there are strong indications that the major function of the metal ion is the coordination of hydroxide anion in the Stem region of the micelle where it is in the proximity of the micelle-bound substrate. The first report of catalysis of a hydrolysis reaction by me tall omi cell es stems from 1978. In the years that... [Pg.138]

J. Haber, The Role of Molybdenum in Catalysis, Climax Molybdenum Co. Ltd., London, 1981. [Pg.479]


See other pages where Catalysis role is mentioned: [Pg.236]    [Pg.826]    [Pg.154]    [Pg.236]    [Pg.826]    [Pg.154]    [Pg.899]    [Pg.928]    [Pg.1851]    [Pg.2398]    [Pg.2593]    [Pg.2697]    [Pg.2996]    [Pg.177]    [Pg.9]    [Pg.48]    [Pg.127]    [Pg.1177]    [Pg.190]    [Pg.814]    [Pg.938]    [Pg.980]    [Pg.446]    [Pg.386]    [Pg.462]    [Pg.469]    [Pg.206]    [Pg.165]    [Pg.182]    [Pg.93]    [Pg.18]   
See also in sourсe #XX -- [ Pg.357 ]




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