Patent ID: 9168515
Filing Date: 2015-10-27
Classification: B01J,C01B,C10G,C10L

Abstract:
1. A high-selectivity catalyst for production of high-quality gasoline fractions from syngas, consisting of cobalt, a promoter and a molecular sieve, wherein the cobalt is presented in an amount of 1-30%, the promoter is presented in an amount of 0.01-5% and the balance is the molecular sieve based on the weight of the catalyst, wherein the molecular sieve is selected from the group consisting of Beta, ZSM-5, MOR, Y, and MCM-22 and is treated by a basic solution, wherein the molecular sieve is treated by the following steps in sequence: (1) preparing the basic solution with a concentration from 0.005 mol L (2) mixing the molecular sieve and the basic solution with a ratio of the bulk volume of the molecular sieve to the volume of the basic solution to be 0.2 to 20 and stirring for 0.1-5 hours at a temperature ranging from room temperature to 150° C., to obtain a mixture; (3) filtering the obtained mixture and rinsing with de-ionized water until the concentration of the alkali or alkaline earth metal ion is not higher than 1 wt % in the filtrate, sufficiently drying the filtered cake until physically adsorbed water content is within 5% by weight of the filtered cake, and then obtaining a new molecular sieve; and (4) adding the obtained molecular sieve into 0.05-3.0 mol L