Dimerization and oligomerization of styrene in the presence of pentasils
作者:N. G. Grigor′eva、R. R. Talipova、L. F. Korzhova、A. V. Vosmerikov、B. I. Kutepov、U. M. Dzhemilev
DOI:10.1007/s11172-009-0009-3
日期:2009.1
Styrene is converted to dimers under the action of zeolite ZSM-12 both in the presence and absence of the solvent (chlorobenzene). This transformation is characterized by a high conversion of the monomer (up to 100 wt.%) and selective formation of linear isomers (704-75%). In the presence of zeolites ZVN and VKZ in chlorobenzene, styrene forms a mixture of oligomers (n = 24-7), among which the dimers
Styrene oligomerization catalyzed by zeolites of different structural types
作者:N. G. Grigor’eva、R. R. Talipova、L. Ph. Korzhova、S. V. Bubennov、B. I. Kutepov、U. M. Dzhemilev
DOI:10.1134/s0965544110020088
日期:2010.3
It was shown that styrene oligomerization in the presence of the zeolite ZSM-12 in a solvent (chlorobenzene) as well as without it proceeds with a high conversion (98-100 wt %) and a high selectivity for linear dimers (up to 82%). The main oligomerization products in the presence of the zeolite Beta are dimers (70-80%), mostly the linear isomer trans-1,3-diphenylbut-1-ene. In the presence of the less active zeolite Y, styrene gives a complex mixture of oligomers in which dimers (53-60%, in chlorobenzene) or dimers and trimers (60-80%, in bulk) are predominant.
Early Main-Group Metal Catalysts for the Hydrogenation of Alkenes with H<sub>2</sub>