Investigation of hydrogen transfer from coal tar pitch and petroleum pitches using a-methylstyrene as hydrogen acceptor / E. I. Andreikov, A. P. Krasikova, M. G. Pervova, A. S. Kabak // Chemistry for sustainable development. - 2022. - Vol. 30, № 5. - P446-454 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): A-METHYLSTYRENE -- COAL TAR PITCH -- PETROLEUM PITCHES Аннотация: 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. |