Selective hydrodeoxygenation of lignin-related 4-propylphenol into n-propylbenzene in water by Pt-Re/ZrO2 catalysts
Selective hydrodeoxygenation of lignin-related 4-propylphenol into n-propylbenzene in water by Pt-Re/ZrO2 catalysts
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DOI：
10.1016/j.cattod.2014.01.022
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发表时间：
2014-10-01
期刊：
影响因子：
5.3
通讯作者：
Fukuoka, Atsushi
中科院分区：
文献类型：
--
作者：
Ohta, Hidetoshi;Feng, Bo;Fukuoka, Atsushi
以4-丙基苯酚为木质素模型物，以水为溶剂，制备了Pt-Re/ZrO 2双金属催化剂，用于4-丙基苯酚选择性加氢脱氧合成正丙苯。Pt/ZrO_2催化剂中Re的加入提高了催化剂的稳定性和产物选择性。反应温度不仅影响反应效率，而且影响产物分布。以约73%的产率得到正丙苯。80%的选择性。反应后，催化剂失活，可能是由于水诱导包裹的Pt纳米颗粒在ZrO 2。该反应可以包括将4-丙基苯酚氢化成4-丙基环己醇，然后脱水得到4-丙基环己烯，随后脱氢成正丙基苯。(C)2014爱思唯尔有限公司版权所有。
Bimetallic Pt-Re/ZrO2 catalysts were developed for the selective hydrodeoxygenation of 4-propylphenol as a lignin model to n-propylbenzene in water. The addition of Re to Pt/ZrO2 improved the catalyst stability and product selectivity. Reaction temperature greatly affected not only reaction efficiency but also product distribution. n-Propylbenzene was obtained in up to 73% yield with ca. 80% selectivity. After the reaction, the catalyst was deactivated possibly due to water-induced wrapping of Pt nanoparticles in ZrO2. The reaction may involve the hydrogenation of 4-propylphenol to 4-propylcyclohexanol, followed by the dehydration to give 4-propylcyclohexene and the subsequent dehydrogenation to n-propylbenzene. (C) 2014 Elsevier B.V. All rights reserved.