A study on the dimethyl ether steam reforming over hybrid catalysts of copper based mixed oxides and solid acids구리계 촉매와 고체산 촉매의 혼성촉매를 이용한 DME 수증기 개질 반응에 관한 연구
The steam reforming of dimethyl ether to hydrogen rich gas was investigated over hybrid catalysts of copper based mixed oxides and solid acids (γ-Al2O3, Al-SBA-15). The effects of acidity and reaction temperature on the catalytic activity was investigated under atmospheric pressure, space velocity of 24000ml/gcathr and molar ratio nH2O/nDME=4. Among the hybrid catalysts tested hybrid catalyst of CuO/Ga2O3 mixed with γ-Al2O3 showed better dimethyl ether conversion and hydrogen yield. The hybrid catalysts are characterized by X-ray diffraction, nitrogen adsorption/desorption, ammonia temperature programmed desorption and N2O decomposition method.