Cobalt?based catalyst is regarded as a suitable choice for Fischer?Tropsch synthesis (FTS) due to its high activity and strong C—C bond formation ability. FTS reaction mechanism of Co?based catalysts was summarised, and the structure of the active phase as well as the conformational relationship between additives and catalytic performance were analysed. For clarifying the role of catalyst supports, the promotion of FTS reaction via regulating metal?carrier interaction was also summarized. Specially, the direct synthesis of liquid fuel by coupling metal Co with zeolite catalyst was discussed, and the reaction route for liquid fuel and the character of as?used bifunctional catalyst were focused.

Hydroisomerization reactions are widely adopted in octane upgrading,diesel fuel coagulation reduction and lubricant base oil dewaxing and viscosity reduction.One?dimensional pore zeolites have unique pore?selective effects on straight?chain alkanes,and thus server as the most suitable acidic carrier and active component for isomerization in hydroisomerization reactions. Its isomerization performance is mainly depended on the topologic structure,acid properties and crystal size of zeolite.This paper mainly summarizes the research progress of synthesis,modification and application of one?dimensional pore zeolites with different topologies in recent years as well as the development trend and application prospect of these zeolites for hydroisomerization.

A series of Y zeolite?encapsulated Ru metal catalysts were prepared by the in?situ hydrothermal method, ion exchange method,and impregnation method.The effects of the Ru metal introduction sequence during the in?situ hydrothermal synthesis process and the synthesis methods on the physical properties and catalytic performance were discussed.Methods including XRD, XRF,and SEM were used to characterize the composition and structure of samples, and the presence states of Ru metal in zeolite were characterized by H₂?TPR,H₂?TPD,TEM,CO?IR,and XPS.The acidity properties of the samples were characterized by NH₃?TPD and Py?IR.The results indicate that the addition order of Ru metal has little effect on the zeolite synthesized by the in?situ hydrothermal method,and this method is the best choice for Ru metal encapsulation.For the isomerization of isobutane to n?butane, the prepared Ru@HY?Si exhibits the highest isobutane conversion and n?butane selectivity and optimal catalytic activity at 673 K with a mass space velocity of 4 h^-1.