CATALYST, METHOD OF ITS PREPARATION AND METHOD OF PURIFYING BUTENES OF BUTADIENE ADMIXTURES Russian patent published in 2010 - IPC B01J21/04 B01J23/825 B01J37/04 

FIELD: chemistry.

SUBSTANCE: this invention relates to heterogeneous catalysis, namely to catalyst and method of purifying butenes of butadiene admixtures. This invention covers the catalyst intended for purifying butenes of harmful admixtures of diene hydrocarbons by selective hydrogenation that contains filamentous carbon bound with nickel alloy and carrier, i.e. aluminium oxide. It differs from known compositions in that it contains filamentous carbon bound with particles of nickel alloy with indium as a promoting addition with its content in (Ni-In)/C catalyst makes 35-80 wt % with nickel-to-indium atomic fraction ratio making 19 to 52. Content of (Ni-In)/C in catalyst makes 96 - 97 wt %, the rest making aluminium oxide. Invention covers also the method of preparing the catalyst intended for purifying butenes of harmful admixtures of diene hydrocarbons by selective hydrogenation that consists in mechanical activation of the mix of nickel oxide, aluminium hydroxide and compound containing promoting additive in centrifugal planetary mill, reducing and cocking up in methane at not less than 550°C and atmospheric pressure. It differs from known methods in that indium acetate is used as promoting additive to produce catalyst that filamentous carbon bound with particles of nickel alloy with indium as a promoting addition with its content in (Ni-In)/C catalyst makes 35-80 wt % with nickel-to-indium atomic fraction ratio making 19 to 52. Content of (Ni-In)/C in catalyst makes 96 - 97 wt %, the rest making aluminium oxide. This invention covers the catalyst intended for purifying butenes of harmful admixtures of diene hydrocarbons by selective hydrogenation in the presence of above described catalyst.

EFFECT: selective hydrogenation of butadiene to butenes at lower hydrogenation of butenes to butane.

5 cl, 2 tbl, 4 ex