Abstract
Effects of Ni doping on the catalytic behavior of CuxNi1−xFe2O4 (x = 1, 0.95, 0.90, 0.50) mixed with Al2O3 were investigated in steam reforming of dimethyl ether for hydrogen production. The stability of the catalyst was significantly enhanced by doping Ni species to CuFe2O4. Formation of CuNi alloy was confirmed as the amount of Ni addition increased. The suppression of the sintering rate was clearly evidenced over Ni-doped catalysts as compared with the undoped one, while the effect on carbon deposition rate was unclear. Nevertheless, an increasing amount of Ni dopant to Cu−Fe spinel retarded the conversion of dimethyl ether and led to high selectivity to CH4 and CO.
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