Effect on conversion

Suppose is a function of a alone and that neither dSt Ajda nor d Alda change sign over the range of concentrations encountered in the reactor. Then, for a system having a fixed residence time distribution. Equations (15.48) and (15.49) provide absolute bounds on the conversion of component A, the conversion in a real system necessarily falling within the bounds. If d S A/dc > 0, conversion is maximized by maximum mixedness and minimized by complete segregation. If d 0i A/da < 0, the converse is true. If cf- A/da = 0, micro-mixing has no effect on conversion. 

A first order liquid phase reaction is taking place in a mixed reactor with 92% conversion. It has been suggested that a fraction of the product stream be recycled. If the fresh feed rate remains unchanged, what will be the effect on conversion ... 

If secondary isotope effects arise strictly from changes in force constants at the position of substitution, with none of the vibrations of the isotopic atom being coupled into the reaction coordinate, then a secondary isotope effect will vary from 1.00 when the transition state exactly resembles the reactant state (thus no change in force constants when reactant state is converted to transition state) to the value of the equilibrium isotope effect when the transition state exactly resembles the product state (so that conversion of reactant state to transition state produces the same change in force constants as conversion of reactant state to product state). For example in the hydride-transfer reaction shown under point 1 above, the equilibrium secondary isotope effect on conversion of NADH to NAD is 1.13. The kinetic secondary isotope effect is expected to vary from 1.00 (reactant-like transition state), through (1.13)° when the stmctural changes from reactant state to transition state are 50% advanced toward the product state, to 1.13 (product-like transition state). That this naive expectation... 

Where do people place TVs In their homes Kids rooms (effect on family relationships, socialization ) Bedroom (effect on sleeping/relaxation ) Kitchen (effect on conversation during meals )... 

Conversions to pyridine-solubles for non-THF-extracted Linby coal were much greater with naphthalene than with phenanthrene and pyrene (Table m, pre-soaking at 250% has little effect on conversions) and, even after THF extraction, naphthalene conversions are comparable to those of pyrene. 

This equation is identical to that obtained for a microfluid for example, see Eq. 5.14a. Thus we conclude that the degree of segregation has no effect on conversion for first-order reactions. 

It is then oxidized to afford phenol through cation 95. The pH of the reaction medium has a strong effect on conversion and product distribution since 94 may participate in an acid-catalyzed competitive dehydration to yield a radical cation (96). Compound 96 may be reduced to the starting material. If there is no other oxidant present, dimerization may also occur. This is the case when benzene undergoes radiolysis in aqueous solution.739,741... 

At 95% confidence, catalyst flow and concentration have a statistically significant effect on conversion of vinegar acid. 

Mesoporosity is expressed in terms of surface area as measured by Hg adsorption in the 20 to 100 Angstrom range. Figure 3 indicates how the effective meso pore activity has a strong effect on conversion of bottoms in the case of Atmospheric Residue, while this effect is much less pronounced in the case of VGO feedstock. 

Table 3 Selected results of the screening of ligand effects on conversions of L-arabinose and D-xylose and selectivity by Estrine et al. [99]...

In a recycle reactor, part of the exit stream is recycled back to the inlet of the reactor. For a stirred-tank reactor, recycle has no effect on conversion, since we are essentially just mixing a mixed reactor. For a plug flow reactor, the effect of recycle is to approach the performance of a CSTR. This is advantageous for certain applications such as autocatalytic reactions and multiple reaction situations where we have a PFR but really require a CSTR. 

Besides considering the order of a reaction and its effect on conversion, another important aspect is to understand effects related to reversibilities. 

Vanadium contamination has higher effect on conversion of residue feed... 

The hydrogen partial pressure has a large effect on conversion and catalyst life as shown in Figure 5a. 

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