Catalyst and process for selective production of lower hydrocarbons C1-C5 from syngas with low methane and CO₂production

摘要

The present invention relates to a catalyst composition comprising cobalt manganese oxide which is modified with silicon in the form of a hydrophilic silica, the catalyst further comprises at least one of lanthanum, phosphorus, Fe, Zr, and Zn, and optionally one or more basic elements selected from the group consisting of alkali metal, alkaline earth metal, and transition metal. Furthermore, a method for preparing the catalyst composition and a process for producing aliphatic and aromatic hydrocarbons using the catalyst composition are provided.

主权项

1. A catalyst composition comprising cobalt; manganese; hydrophilic silica; and at least one element selected from the group consisting of lanthanum, phosphorus, Fe, Zr, and Zn, wherein the relative molar ratios of the elements comprised in the composition are of the formula
CoMnaSibXcMdOy wherein: M is one or more elements selected from the group consisting of alkali metal, alkaline earth metal, and transition metal; a is about 0.8-1.2; b is 0.1 to 1; each c is from greater than 0 to about 0.005, wherein the total c is from greater than 0 to about 0.005; d is 0 to about 0.005; X is at least one element selected from the group consisting of lanthanum, phosphorus, Fe, Zr, and Zn; y is a number determined by the valence of the other elements present; wherein the catalyst composition further comprises a binder selected from the group consisting of magnesia, alumina, silica, zirconia, titania, activated carbon, non-activated carbon, and zeolites, and Si is in the form of a hydrophilic silica.