Patent RU-2654205-C1 (RU)
Inventor: XU LI
IPC: C10G2/00
Filed: 2016-04-15
Granted: 2018-05-17
Abstract: FIELD: chemistry. 
     SUBSTANCE: invention relates to technical field of catalytic synthesis of liquid fuel fractions. Carrier for selective synthesis of a kerosene fraction from a synthesis gas, this carrier contains the following components in parts by weight: 5–50 parts of mesoporous zirconia (ZrO 2 ), 10–55 parts of the silicoaluminophosphate (SAPO) molecular sieve, 5–50 parts of the modified mesoporous molecular sieve Al-SBA-16, 1–3 parts of the sessment resin powder and 10–70 parts of alumina. Method of preparing said carrier for selective synthesis of a kerosene fraction from a synthesis gas comprises: 1) weighing SBA-16 and aluminum triethoxide in accordance with a weight ratio of 1:3.0–4.5 and separating aluminum triethoxide into two equal portions; 2) adding SBA-16 to n-hexane and uniformly stirring at room temperature to obtain a mixed solution; adding one part of aluminum triethoxide to n-hexane and stirring at room temperature until dissolution of aluminum triethoxide; and adding aluminum triethoxide dissolved in n-hexane to a mixed solution and stirring overnight at room temperature to obtain a sample solution; 3) moving the solution of the sample obtained in step 2) to a Buchner filter funnel, washing with n-hexane and suctioning; and repeating the above operations 2 to 4 times to obtain a primary filter cake; 4) adding the primary filter cake to n-hexane and stirring at room temperature; addition of another part of aluminum triethoxide; stirring overnight at room temperature, transferring to a Buchner filter funnel, washing with n-hexane and suctioning; and repeating the above operations 2 to 4 times to obtain a secondary filter cake; 5) calcination of the secondary filter cake at 500–650 °C for 6–10 hours to obtain a modified Al-SBA-16 sieve for use; 6) uniform mixing of microporous alumina with a dilute solution of nitric acid at a mass ratio of 1:0.5–1.5, to prepare a viscous paste for use in which the concentration of the dilute nitric acid solution is 5–20 wt%; and 7) weighing, in parts by weight, 5–50 parts of mesoporous zirconia, 10–55 parts of a silicoaluminophosphate molecular sieve, 5–50 parts of a modified Al-SBA-16 screen, 1–3 parts of resin powder and 10–70 parts of a viscous paste based on alumina; and their uniform mixing, laminating, extrusion molding, drying for 6–12 hours at 90–120 °C, subsequent firing for 4–10 hours in air at 500–600 °C and cooling to room temperature to obtain a carrier. Catalyst for selectively synthesizing a kerosene fraction from a synthesis gas containing a soluble cobalt salt and the above carrier is disclosed, this soluble cobalt salt is loaded onto the carrier surface. Method of manufacturing this catalyst includes: impregnating the support with an aqueous solution containing a soluble cobalt salt, by isovolumetric impregnation, standing overnight at room temperature, followed by drying for 4–12 hours at 90–120 °C at normal pressure, firing for 4–10 hours in air at 500–600 °C and cooling to room temperature to obtain a catalyst. 
     EFFECT: preparation of carrier and catalyst for the selective synthesis of a high-quality kerosene fraction from a synthesis gas, which include low selectivity for methane, high selectivity for the middle fraction and a high ability to perform isomerization, high-quality kerosene fraction can be obtained directly and selectively through a synthesis reaction of the Fischer-Tropsch synthesis. 
     16 cl, 12 ex, 5 tbl