Patent RU-2706241-C2 (RU)
Title: Catalyst and method of producing light olefins directly from synthesis gas as result of single-step process
Inventor: PAN XIULIAN
IPC: B01J23/34
Filed: 2015-10-16
Granted: 2019-11-15
Abstract: FIELD: chemistry. 
     SUBSTANCE: invention describes a synthesis gas conversion catalyst in which the catalyst is a composite material made from multicomponent metal-containing composites and inorganic solid acids having a hierarchical pore structure including micropores, mesopores and macropores; metal-containing composites are dispersed on surfaces or in porous channels of inorganic solid acid; inorganic solid acid is selected from acid based on silicon-aluminum and acid based on silicon-phosphorus-aluminium; metal in a multicomponent metal-containing composite is selected from a group consisting of Zn, Pd, Zr, Fe, Mg, K, Cu, Ga, Ge, Ca, Mn, Al, Ce, La, Cr, Co, Ti, Mo, Vo, In and mixtures thereof; content of multicomponent metal-containing composites in the catalyst ranges from 10 wt. % up to 75 wt. % of total catalyst weight (100 %); said inorganic solid acid, having a hierarchical pore structure, is formed from secondary particles of inorganic solid acid; size of secondary particles of inorganic solid acid ranges from 100 nm to 500 mcm; said secondary particles of inorganic solid acid are formed by arranging particles of inorganic solid acid crystals having a size in range of 5 to 200 nm; said secondary inorganic solid acid particles have a three-dimensional hierarchical structure of porous channels including three types of porous channels in the form of primary pores, secondary pores and tertiary pores; said primary pores are microporous channels having a diameter of less than 2 nm; micropores are located in crystals of inorganic solid acid crystals; said secondary pores are mesopore channels having a diameter in range of 2 nm to 50 nm; secondary pores are formed with assembled crystals of inorganic solid acid; secondary pores are located in secondary particles of inorganic solid acid and in walls of pores of tertiary pores; said tertiary pores are macroporous channels characterized by distribution over diameters of more than 50 nm; tertiary pores are formed by arranging secondary particles of inorganic solid acid; said three types of pore channels are connected and interconnected to form a three-dimensional hierarchical structure of pore channels; secondary pores are located in walls of pores of adjacent tertiary pores; primary pores are located in walls of adjacent secondary pores and/or tertiary pores; BET surface area for said inorganic solid acid, having a pore hierarchical structure, determined by physical adsorption of N 2 , is in range of 100–1200 m 2 /g, and the pore volume is in range of 0.25–0.80 ml/g; as it is established as a result of calculation in accordance with area of specific surface area of specific surface of micropores occupies 10–65 %, mesopore specific surface area occupies 20–75 %, and macropore specific surface area occupies 15-70 %. Also described is a method of producing olefins from synthesis gas. 
     EFFECT: technical result is increase of hydrocarbons formation selectivity. 
     11 cl, 4 dwg, 16 tbl, 63 ex