METHOD OF PRODUCING SUPER-PURE HYDROGEN BY STEAM REFORMING OF ETHANOL Russian patent published in 2020 - IPC C01B3/32 B82Y40/00 B01D71/02 

FIELD: chemistry.

SUBSTANCE: invention relates to production of catalysts and reactors for chemical and petrochemical industry, namely to dehydrogenation and steam reforming processes of lower aliphatic alcohols in order to obtain highly pure hydrogen suitable for use in fuel cells. Method comprises feeding into a membrane-catalytic reactor a mixture of ethanol and steam, steam reforming of ethanol at high temperature on a metal-containing catalyst with simultaneous removal of the formed super-pure hydrogen through a hydrogen-selective membrane from a palladium-containing alloy as a permeate, blowing off super-pure hydrogen with a carrier gas and releasing the retentate. Palladium-containing alloy used is alloy of 93.5 wt% Pd, 0.5 wt% Ru, 6.0 wt% In, and the catalyst is an alloy selected from Pd-Ru and Pt-Ru with content of second component 10 wt% applied on detonation nanodiamonds powder. Steam reforming of ethanol is carried out at temperatures of 380–650 °C and pressure of 1–3 atm with retentate output as an additional product – hydrogen-containing gas.

EFFECT: technical result consists in improvement of output of hydrogen suitable for use in fuel cells, while mitigating reaction conditions and longer service life of membrane.

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