Investigation of Hydrogen Transfer from Coal Tar Pitch and Petroleum Pitches Using alpha-Methylstyrene as Hydrogen Acceptor
E. I. ANDREIKOV1,2, A. P. KRASIKOVA1,2, M. G. PERVOVA1, A. S. KABAK1,2
1Postovsky Institute of Organic Synthesis, Ural Branch of the Russian Academy of Sciences, Yekaterinburg, Russia
2VUKhIN, Yekaterinburg, Russia
Keywords: alpha-methylstyrene, coal tar pitch, petroleum pitches, hydrogen transfer, condensation products
Pages: 446-454
Abstract
The reaction of hydrogen transfer from coal tar pitch and petroleum pitches to α-methylstyrene with the formation of cumene was investigated in glass ampoules within the temperature range of 200-360 °C and reaction time of 15-60 min and when passing α-methylstyrene through a layer of coal tar pitch. It is shown that the formation of non-chromatographable products of α-methylstyrene condensation with polycyclic aromatic compounds of pitches occurs simultaneously. The dependences of α-methylstyrene conversion, the selectivity for cumene and condensation products on the temperature and reaction time, the ratio of pitch/α-methylstyrene are determined. The amount of hydrogen transferred from pitches to α-methylstyrene was determined, and the results obtained were compared with the literature data on the transfer of hydrogen from pitches obtained using anthracene as a hydrogen acceptor.
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