Hydrooligomerization of unsaturated hydrocarbons as a basis of new technologies for the production of motor fuel compounds

Abstract

A brief analysis is performed for the current state of processes for the production of motor fuels based on the consecutive oligomerization and hydrogenation reactions of unsaturated hydrocarbons. Some new butene hydrooligomerization catalysts based on the bifunctional NiO/В₂O₃–Al₂O₃, PdO/В₂O₃–Al₂O₃, and MoO₃/В₂O₃–Al₂O₃ systems are considered. It is shown that the best process performance parameters (a 67 wt % yield of liquid С₅₊ products at a butene conversion of more than 90%) are achieved with PdO/В₂O₃–Al₂O₃ catalyst prereduced in a hydrogen medium. The possibility of acetylene hydrooligomerization on NiO/B₂O₃–Al₂O₃ catalyst is demonstrated in principle. It is established that the presence of nickel(II) cations chemically bonded to the surface of a support is of fundamental importance for both acetylene hydrooligomerization and ethylene oligomerization.