Overall Reactions with a Multiplicity Greater Than One

Overall Reactions with a Multiplicity Greater Than One [Pg.300]

Each system considered in this section has a space of overall reactions whose dimension exceeds one. In many industrial reactions involving organic substances a major product is formed, but a side reaction contributes to loss in selectivity or yield of the desired product. Such cases may be said to exhibit a multiple overall reaction, unless the ratio of desired product to by-product remains constant over a range of operating conditions, so that a simple chemical equation might be employed to express the stoichiometry. [Pg.300]

It is important to note that in these cases one cannot add up the separate direct mechanisms for all the simple reactions which add up to the overall reaction and expect, in general, to get direct mechanisms for the overall reaction, unless there are no common steps in the mechanisms of the simple reactions that form a basis for the system. [Pg.300]

The direct mechanisms for the reaction systems are, however, unique and any observed rates of appearance or disappearance of terminal species can [Pg.300]

Since there are no cycles in the system, the general mechanism (32) is a direct mechanism for a multiple overall reaction (33), where p and a are unrestricted [Pg.301]

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