NICKEL CATALYST FOR HYDROGENATION OF UNSATURATED HYDROCARBONS AND SULPHUR REMOVAL, METHOD FOR PRODUCTION AND USE THEREOF Russian patent published in 2014 - IPC B01J23/755 B01J21/12 B01J21/14 B01J23/78 B01J37/03 C07C5/08 C07C5/09 C07B35/02 C10G45/06 C10G45/36 

FIELD: chemistry.

SUBSTANCE: invention relates to selective heterogeneous nickel catalysts for hydrogenation of unsaturated hydrocarbons and sulphur removal and methods for production and use thereof. Described is a selective heterogeneous catalyst containing nickel on a support which is a diatomite powder having the following physical properties: BET surface area 20-50 m²/g, particle size less than 10 mcm - no more than 15 wt %, greater than 71 mcm - no more than 40 wt %, 10-71 mcm - the balance, or crushed shale taurite, having the following physical properties: BET surface area 12-16 m²/g, particle size less than 10 mcm - no more than 40 wt %, or a mixture thereof in ratio of 50:50. The catalyst has the following composition, wt %: nickel 52.0-54.0, aluminium oxide 2.5-3.8, iron oxide 1.3-1.7, sodium oxide 0.5-1.5, calcium oxide 0.1-0.6, magnesium oxide 0.25-0.8, sulphide sulphur 0.1-0.5, silicon dioxide - the balance. Also described is a method of producing said catalyst by mixing a support with 5-6% aqueous nickel sulphate solution, adding to the obtained suspension 25-27% calcined soda solution until achieving molar ratio of calcined soda to nickel sulphate of 1.6-1.7:1.0, at medium pH 9.0, or in two steps: at the first step to molar ratio calcined soda to nickel sulphate of 0.8-0.9:1.0, at medium pH 6.0-7.0, at the second step to molar ratio calcined soda to nickel sulphate of 1.6-1.7:1.0, at medium pH 9.0-10.0. Further, the method includes steps of filtering, washing, drying and pelletising without steps of reducing with hydrogen and passivation with a nitrogen-air mixture. Before use, activation of the fresh catalyst or recovery of the catalyst after 1500-3000 hours of contact thereof with the material is carried out directly in the hydrogenation reactor in a current of circulating hydrogen at 230-500°C for 5-50 hours. Also described is a method of using said catalyst.

EFFECT: achieving high activity, selectivity and stability of hydrogenating unsaturated hydrocarbons and sulphur removal.

6 cl, 6 tbl, 9 ex