Patent RU-2753336-C1 (RU)
Title: Carrier material from aluminium oxide and method for production thereof, hydrogenation catalyst and method for hydrogenation of residual oil
Inventor: JI HONGHAI
IPC: B01J32/00
Filed: 2018-10-26
Granted: 2021-08-13
Abstract: FIELD: chemistry. 
     SUBSTANCE: invention relates to a carrier material from aluminium oxide for a residual oil hydrogenation catalyst, a method for production of the carrier material, an application of the carrier material, a residual oil hydrogenation catalyst, and a method for hydrogenation of residual oil. The carrier material contains the main part of aluminium oxide and a rodlike aluminium oxide, wherein the weight of the rodlike aluminium oxide constitutes 5 to 26% wt. of the carrier material. The main part of the aluminium oxide contains micron-sized pore channels. At least part of the rod-like aluminium oxide is distributed over the outer surface of the main part of the aluminium oxide and/or in the micron-sized pore channels with a pore diameter D constituting 3 to 10 mcm. The rod-like aluminium oxide has a length of 1 to 12 mcm and a diameter of 80 to 300 nm. The carrier material additionally comprises an additive, and said additive is selected from the group consisting of phosphorus and silicon. The content of the additive in the carrier material constitutes 10% wt. or less relative to the oxide. The method for production of the carrier material includes: (1) producing a semi-finished aluminium oxide carrier, (2) submerging the semi-finished carrier in an ammonium bicarbonate solution, followed by performing sealing and thermal treatment, performing the first drying and first calcination of the material produced by thermal treatment resulting in a carrier material from aluminium oxide, wherein stage (1) includes mixing, blending and shaping the aluminium oxide precursor and a physically pore-expanding substance, performing a second drying and a second calcination of the shaped product resulting in a semi-finished aluminium oxide carrier. The aluminium oxide precursor is selected from the group consisting of pseudoboehmite, hydrated aluminium oxide, aluminium oxide sol, and amorphous aluminium hydroxide. The physically pore-expanding substance is at least one substance selected from the group consisting of activated carbon, charcoal, and wood chips, and the added amount of the physically pore-expanding substance constitutes 7 to 36% wt. of the aluminium oxide precursor calculated from Al 2 O 3 . The conditions of the second drying and the second calcination are as follows: the temperature of the second drying constitutes 100 to 160°C, and the duration of the second drying constitutes 6 to 10 hours, the temperature of the second calcination constitutes 600 to 750°C, and the duration of the second calcination constitutes 4 to 6 hours. The semi-finished aluminium oxide carrier additionally comprises an additive selected from the group consisting of phosphorus and silicon. 
     EFFECT: carrier material exhibits improved carrier characteristics and improved pore structure, surface characteristics and mechanical strength, so that the resulting hydrogenation catalyst can be used in a method for hydrogenation of residual oil and optimum demetallisation, desulphurisation and denitrification effects can be obtained with clearly improved long-term operation during hydrogenation of residual oil. 
     19 cl, 2 dwg, 3 tbl, 6 ex