The effectiveness of different experiments for the regeneration of a phosphorus poisoned 15 wt.% Ni/Al₂O₃ catalyst was investigated during the time on stream hydrogenation of octanal to octanol. The catalyst was deactivated after being exposed to feed contaminated with 500 ppm of triphenylphosphine. Regeneration of the catalyst was attempted by either treating the poisoned catalyst with hydrogen, washing the catalyst with octanol or conducting a combined octanol wash-hydrogen treatment experiment, all at elevated temperatures and at atmospheric pressure. The combined regeneration experiment was the most effective, since the conversion and octanol selectivity were recovered to a significant extent. Characterisation of the regenerated catalysts by ICP-OES, XRD, magnetic measurements and TEM showed that sintering also contributed to the deactivation of the catalysts, and that regeneration did not remove phosphorus from the catalyst, due to phosphorus having reacted with nickel. It was also established that some phosphorus was incorporated into the alumina support to generate strongly acidic sites.

不同实验对磷中毒15 wt。％Ni / Al ₂ O ₃的再生的有效性在将辛醇连续流氢化为辛醇的过程中研究了该催化剂。暴露于被500 ppm三苯膦污染的进料后，使催化剂失活。通过用氢气处理中毒的催化剂，用辛醇洗涤催化剂或进行联合的辛醇洗涤-氢处理实验来尝试催化剂的再生，所有这些均在升高的温度和大气压下进行。联合再生实验是最有效的，因为转化率和辛醇的选择性得到了很大程度的恢复。通过ICP-OES，XRD，磁测量和TEM对再生的催化剂进行表征，结果表明烧结也导致催化剂失活，并且再生并未从催化剂中去除磷，由于磷与镍发生了反应。还确定了将一些磷掺入氧化铝载体中以产生强酸性部位。