采用浸渍法制备Ni/Al₂O₃催化剂，并利用BET、XRD、GC-MS、TG等对反应前后催化剂及液态产物进行了表征。采用固定床反应器考察了Ni/Al₂O₃催化剂作用下乙酸水蒸气重整制氢的反应性能，研究了反应温度、水碳比、CaO吸收剂等因素对气体组分体积分数变化以及氢气收率的影响。结果表明，在重整反应温度为600℃、水碳比为5的条件下，氢气体积分数可达92.9%，其收率为97.9%；添加CaO吸收剂后，氢气体积分数增加了6.1%，但其收率下降15%。反应后催化剂的XRD和TG表征结果表明，CaO吸收剂的加入抑制了催化剂表面消碳反应的进行，进而造成Ni/Al₂O₃催化剂作用下氢气收率的下降。

Ni/Al₂O₃ catalyst is prepared by impregnating method and characterized by BET,XRD,GC-MS,and TG methods.The production of hydrogen by steam reforming of acetic acid over Ni/Al₂O₃ catalyst is evaluated in a fixed-bed reactor,and the effects of reaction temperature,water/carbon ratio and CaO absorbent addition on the volumetric fraction of gas components and hydrogen yield are studied.The results show that the volumetric content and yield of hydrogen can reach 92.9% and 97.9%,respectively at a reforming temperature of 600℃ and a water/carbon ratio of 5.As CaO absorbent is added,the volumetric content of hydrogen can be increased by 6.1%,but the yield of which will decrease by 15%.XRD and TG characterization on the used catalyst indicates that the addition of CaO absorbents inhibits the decarbonization reaction on the catalyst surface,resulting in a decrease of hydrogen yield over Ni/Al₂O₃ catalyst.

王治斌(1997-),男,硕士研究生,研究方向为生物油水蒸气催化重整制氢,w15553566951@163.com