DESIGN OF HIGHLY EFFICIENT CATALYST FOR CATALYTIC MEMBRANE REACTOR OF HYDROGEN PRODUCTION

Abstract

The paper presents data on the development of catalytic materials with improved characteristics for catalytic membrane reactors of autothermal reforming of methane (ATR of CH4) obtained in the frame of the International collaborative project DEMCAMER – Design and Manufacturing of Catalytic Membrane Reactors by developing new nano-architectured catalytic and selective membrane materials. The Ni and Ni-Me (Me = Pt, Pd, Re, Mo, Sn) catalysts were synthesized based on different supports (La2O3, Ce1-xZrxOy, Ce1-xGdxOy, CeZrO2/Al2O3, La2O3-CeZrO2/Al2O3). Their activity was studied in the reaction of autothermal reforming of methane. The purposeful regulation of composition of Ni-containing phase (NiO, La-Ni-O, Al-Ni-O), average particle size of NiO (6-50 nm), and redox properties of Ni cations is realized by variation of support composition. The optimal composition and preparation mode of catalyst 10Ni0.5Pd/10CeZrO2/Al2O3 as well as reaction conditions were established. The catalyst provides at 850 oС the H2 yield of ~60% and is characterized by stable work in condition of АТР of СH4 that indicates the availability of its application for rational methane conversion to hydrogen-containing gas.