Catalytic oxidation processes are bf central importance to a substantial
part of large-scale chemical industry. Indeed, this area of industrial
catalysis has an extremely long history which stretches back well into
the last century. The development and growth of catalytic oxi- dation
processes for the manufacture of commodities such as sulfuric acid and
nitric acid can be viewed as indicators for the growth of the early and
middle years of the entire inorganic chemical industry, and in an
analogous fashion the manufacture of products such as phthalic
anhydride, maleic anhydride and ethylene oxide has been central to the
development of an organic chemical industry. We should all be able" to
learn from history, and present-day scientists and technologists will
find considerable benefit in following the account of the historical
development of catalytic oxidation processes presented in Chapter I by
Drs. G. Chinchen, P. Davies and R. J. Sampson. Alkenes are important
intermediates in many processes in organic chemical industry. Being
mostly petroleum- derived, the alkene availability pattern does not
necessar- ily match consumption requirements and an alkene inter-
conversion process such as metathesis is clearly of in- dustrial
importance. In fact alkene metathesis, in addi- tion to its industrial
significance, poses an interesting mechanistic problem. upon which
considerable effort has been expended in recent years and which is now
fairly well understood.