High yields of 93‐93% acenaphthylene are obtained (by vapour phase catalytic dehydrogenation of acenaphthene. The use of steam as a diluent for the acenaphthene vapour is particularly beneficial. The effect of certain operation variables on the degree of conversion has been studied; under certain conditions, both) naphthalene and α‐methyl naphtalene are present as by‐products. Suitable analytical methods for determining acenaphthylene in the crude product are described.
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Kynaston et al. (1949) studied this question.
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