Catalytic Dehydrogenation of para-Diethyl Benzene to para-Divinyl Benzene over Iron Oxide Supported Catalyst

Vivek Kumar Srivastava (Reliance Research and Development Center, Vadodara Manufacturing Division, Reliance Industries Ltd., Vadodara-391346, Gujarat)
Nagesh Sharma (Reliance Research and Development Center, Vadodara Manufacturing Division, Reliance Industries Ltd., Vadodara-391346, Gujarat)
Raksh V. Jasra (Reliance Research and Development Center, Vadodara Manufacturing Division, Reliance Industries Ltd., Vadodara-391346, Gujarat)

Bulletin of Chemical Reaction Engineering & Catalysis
2019: BCREC Volume 14 Issue 2 Year 2019 (August 2019)

The vapor-phase catalytic dehydrogenation of para-diethyl benzene (PDEB) to para-divinyl benzene (PDVB) with super-heated steam as a diluent was investigated using alumina supported iron oxide catalyst system. During the catalytic dehydrogenation reaction, ethyl styrene (EST) and thermal cracking products were observed as side products. It was found that various reaction parameters influence the rate of dehydrogenation reaction. However, the reaction is favored by high temperature and low reaction pressure. Moreover, addition of potassium into iron-oxide catalyst acts as a promoter and thereby increases the efficiency of the catalyst. The conversion of PDEB and yield of PDVB also increases as the Water/PDEB flow ratio increases.