Abstract
Ix PAP~.RS on dehydrocyclization of hydrocarbons with oxide catalysts the experimentally important role of unsaturated compounds in the formation of aromatic structures is emphasized and confirmed [1-5]. We found it of interest to study this problem in relation to the investigation of dehydrocyclization of organic sulphur compounds and compare the results with facts previously established during dehydrocyclization of diethylsulphide [6]. Ethylvinyl and divinyl sulphides were the subjects of investigation. Their conversions were studied in the temperature range of 260-425 ° with a space velocity of 0-9 hr -1 using an alumina-chromium oxide-copper oxidepotassium oxide catalyst. Conditions and results of experiments are shown in Tables 1 and 2. Methods of operation and characteristics of the catalyst are described in another paper [6]. Conversions of unsaturated sulphides are very similar to the behaviour of their saturated anMogue--diethyl sulphide--under similar conditions [6]. The main directions of conversion of all the three sulphides are the same--dehydrocyclization and cracking:
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