Poisoning, homogeneous reversible

Uniform (homogeneous) Reversible Poisoning Flat Plate Pellets. The rate of reaction for uniform or homogeneous reversible poisoning in flat plate pellets is given by (1 ... 

T is the time constant for poison laydown for homogeneous reversible poisoning and is given by ... 

Uniform or Homogeneous Reversible Poisoning Flat Plate Pellets. Substituting equation (10) into equation (16), the total production for uniform reversible poisoning in flat plate pellets becomes... 

In many reactions of homogeneous catalysis, one or several linear pathways are connected to the actual catalytic cycle. The most common example is catalysis by a ligand-deficient complex, initiated by reversible ligand loss. Also in this category are certain types of inhibition, activation, and poisoning. 

For a homogeneous catalyst, a reactive site on a molecule may be similarly poisoned by the binding of a substance directly to the site or nearby either in a permanent or reversible way. The properties of the site are significantly altered to prevent catalytic action. 

Gas-liquid plus catalytic solid Use when (i) the reaction occurs in the liquid phase (in the presence or not of homogeneous catalyst) or at the catalyst interface (ii) temperatures and pressures for reaction are consistent with distillation conditions (iii) reactions are reversible equilibrium not irreversible (iv) not for supercritical, gas phase reactions, or solid reactants or products, high temperatures or pressures. Minimizes catalyst poisoning, lower pressure than fixed bed. Used for hydrogenation reactions and MTBE and acrylamide production. For example, 90% conversion via reactive distillation contrasted with 70% conversion in fixed bed option. 

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