Sentence examples for mechanisms of catalyst from inspiring English sources

The literature treating mechanisms of catalyst deactivation is reviewed.

Possible mechanisms of catalyst deactivation and modification of cobalt active sites during the reaction are also discussed.

While the effects of catalyst and sorbent deactivation are ignored, the chapter describes the main mechanisms of catalyst decay and, as such, it provides an introduction to further chapters which analyze systems with deactivating sorbents and catalysts to minimize the detrimental effect of catalyst deactivation.

Intrinsic mechanisms of catalyst deactivation are many; nevertheless, they can be classified into six distinct types: (i) poisoning, (ii) fouling, (iii) thermal degradation, (iv) vapor compound formation accompanied by transport, (v) vapor-solid and/or solid-solid reactions, and (vi) attrition/crushing.

The single-pellet diffusion reactor has proven to be a particularly useful tool to diagnose the mechanism of catalyst poisoning.

Subsequently, the catalyst decays by processes which remove active sites by reactions of a lower order, one which is probably related to the chemical mechanism of catalyst poisoning.

The model calculations explain: (1) the magnitudes of the reaction rates at different temperatures; (2) the mechanism of catalysts re-oxidation; (3) the influence of the addition of peroxides on the rate of oxidative coupling of methane.

Possible mechanisms of temporary catalyst activity decrease have been proposed.

Additionally, the deactivation mechanisms of Pd/C catalysts in the two different hydrodechlorination reactions are discussed.

To define activity and selectivity mechanisms of chosen catalysts in hydrogenation process model combinations are often used such as anthracene, phenanthrene, pyrene, naphthalene, and others, which allow establishing more detailed mechanism of heavy hydrocarbon refinement and scientifically developing vindicated methods for forecasting their management.

Based on the model calculations, we have designed and build plasma-chemical installations and used them to study the mechanisms of preparation of catalysts (and regeneration of spents of deactivated catalysts) for reforming of natural gas (steam conversion of CH4), for low-temperature steam conversion of CO and for synthesis of NH3.