CAJ | 학술논문

采用浸渍法制备了一系列ZnO/Al2 O3催化剂，考察了该催化剂在水醇摩尔比为3、常压、450℃工作条件下乙醇水蒸气重整（SRE）制氢反应活性及稳定性。结果表明， ZnO负载量达到10wt％时， C2H5OH转化率最高，但催化剂在160 min内出现明显失活。利用BET等表征手段考察了反应前后催化剂的物理化学性质，并通过失活模型模拟，提出了ZnO/Al2 O3催化剂上SRE制氢反应的失活原因。
채용침지법제비료일계렬ZnO/Al2 O3최화제，고찰료해최화제재수순마이비위3、상압、450℃공작조건하을순수증기중정（SRE）제경반응활성급은정성。결과표명， ZnO부재량체도10wt％시， C2H5OH전화솔최고，단최화제재160 min내출현명현실활。이용BET등표정수단고찰료반응전후최화제적물이화학성질，병통과실활모형모의，제출료ZnO/Al2 O3최화제상SRE제경반응적실활원인。
ZnO/Al2 O3 catalysts with different ZnO loadings were synthesized by impregnation method.The performance and durability of steam reforming of ethanol ( SRE) over prepared catalysts were evaluated with n ( H2 O):n( C2 H5 OH) molar ratios of 3:1 at 450 ℃ and atmospheric pressure.The results showed that the highest C 2 H5 OH conversion was obtained at ZnO loading of 10 wt%.However , the performance deactivated rapidly after 160 min for all ZnO/Al2 O3 catalysts.BET surface areas of catalysts before and after the SRE reaction were tested.Finally, the cause of the deactivation on ZnO/Al2 O3 catalysts was provided by the deactivation model.