石油化工2011，Vol.40Issue(5)：482-485,4.
丙酮一步法合成甲基异丁基酮催化剂的失活机理
Deactivation Mechanism of the Catalyst for One-Step Synthesis of Methyl lsobutyl Ketone from Acetone
马龙 1马中义 1公茂金 2田艳明 1周玮 2赵胤2
作者信息
- 1. 中国石油吉林石化公司化肥厂,吉林吉林132021
- 2. 中国石油吉林石化公司研究院,吉林吉林132021
- 折叠
摘要
Abstract
The fresh and the spent Pd/Al2O3 catalysts for synthesis of methyl isobutyl ketone from acetone were characterized by means of BET, XRD, SEM and O2-TPO to investigate its deactivation mechanism. The results showed that the Pd contents in both the fresh and the spent catalysts were the same, while the pore volume of the spent catalyst decreased and the average pore diameter enlarged compared to the fresh catalyst. The alumina crystal phase transformed from y alumina to hydroxyl alumina and the macromolecule byproducts deposited on the spent catalyst surface. Hence, the weakened hydrogenation ability of the catalyst resulted from the decrease of hydrogenation sites, which was caused by the transformation of the alumina crystal phase and the deposition of the macromolecule byproducts.关键词
丙酮:甲基异丁基酮/钯/氧化铝催化剂/失活机理/加氢活性中心Key words
acetone/ methyl isobutyl ketone/ palladium/alumina catalyst/ deactivation mechanism/ hydrogenation sites分类
化学化工引用本文复制引用
马龙,马中义,公茂金,田艳明,周玮,赵胤..丙酮一步法合成甲基异丁基酮催化剂的失活机理[J].石油化工,2011,40(5):482-485,4.
