Horiuti-Boreskov relation

Equations like (2.17) can be treated as a generaHzation of the known Horiuti Boreskov relation over an arbitrary pathway of cocurrent... 

Along with the Boreskov mle, other thermodynamic generahzations are apphed when considering the catalytic processes. One is the commonly known trivial postulate that the catalyst is not capable of changing the thermodynamic equihbrium between reactants and the products of the catalyzed reaction. Another thermodynamic principle is expressed by the Horiuti Boreskov relations to determine the rate of a catalytic reaction as the difference between the rates of the direct and back stepwise transfer mation (see Section 1.3.2). 

The expressions of the derived type (4.10) are valid for the intermediate linear schemes of catalytic stepwise reactions over a wide range of condi tions. Therefore, the stationary rate vj of the overall stepwise process can be treated here as proportional to the difference of thermodynamic rushes of the initial reactants and final products of the catalytic reaction. This is in line with the Horiuti Boreskov relation (1.36) (see Section 1.3.2) that describes the dependence of the stationary rates of many catalytic processes on the degree of their thermodynamic nonequilibricity. 

The Horiuti-Boreskov-Onsager Relations for Parallel Catalytic Reactions with Common Intermediates... 

Two important conclusions foUow from the analysis of the Horiuti Boreskov Onsager reciprocity relations (4.97) for the rates in different channels of catalytic transformations ... 

Figure 4.10 Typical results of the calculations of expected variations in the stationary concentrations of components at the benzene (B) alkylation with ethylene (E) along a plug-flow reactor of length L at 210 C x is the distance from the inlet of the reactor. The calculations were performed in terms of the Horiuti-Boreskov-Onsager reciprocity relations to optimize the composition of the initial reaction mixture so the outlet and inlet diethylbenzene (DBE) concentrations would be identical, which means 100% selectivity of the process in respect to the target product ethylbenzene (EB).

A, reciprocity coefficient in the Horiuti Boreskov Onsager relations... 

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