生物油模化物蒸汽重整制氢中催化剂的研究

连续吸附强化生物油重整制氢工艺能够实现连续高效制取氢气,对该工艺所需的颗粒状催化剂进行了制备,研究了它们对三种生物油模化物(乙醇、丙酮、苯酚)催化性能的差异.实验在固定的操作条件下进行,重整温度设定为750℃,水和碳质量比为6∶1,催化剂填充量为10 cm.结果表明,镍的加入能有效促进重整反应的进行,镁、铈、钴等助剂的添加能够提高催化剂的抗积炭性能,在所制备的催化剂中Mg-Ni/Co对三种模化物均显示出良好的催化性能.利用Mg-Ni/Co催化剂对模拟生物油进行重整制氢,其三类产氢率分别能够达到60%,70%,90%以上,且显示了良好的稳定性和再生性能.

Study on Catalyst of Bio-oil Model Steam Reforming for Hydrogen Production

Continuous-adsorption enhanced bio-oil reforming process can produce hydrogen continuously and efficiently. Granular catalysts were prepared for the reforming process. Their catalytic performances with three different bio-oil models (ethanol， acetone and phenol) were investigated. The operating conditions were fixed as follow: the reforming temperature was 750℃， the mass ratio of water to carbon was 6∶1， and the loading capacity of catalyst was 10cm. The result shows that the addition of nickel can effectively promote the steam reforming reaction. Additives like magnesium， cerium， cobalt， et al can improve catalyst’s performance of anti-carbon-deposition. Mg-Ni/Co was the best nickel-based catalyst according to the experiments with different bio-oil models. In the experiment using simulated bio-oil with Mg-Ni/Co as catalyst， the hydrogen production rates with the three models were over 60%， 70% and 90% ， respectively. Mg-Ni/Co has not only good stability， but also good regeneration performance.