Roles of supports on reducibility and activities of Cu3P catalysts for deoxygenation of oleic acid: In situ XRD and XAS studies
作者:Nopparuj Kochaputi、Pongtanawat Khemthong、Panita Kasamechonchung、Teera Butburee、Wanwisa Limphirat、Yingyot Poo-arporn、Sanchai Kuboon、Kajornsak Faungnawakij、Chanapa Kongmark
DOI:10.1016/j.mcat.2021.111425
日期:2022.5
This work demonstrates for the first time that SiO2 and ultra-stable zeolite Y (USY) supports play significant roles in the reducibility of Cu2P2O7 to form Cu3P, which consequently affects the selectivity of oleic acid deoxygenation. The formation of supported Cu3P nanoparticles during hydrogen reduction of Cu2P2O7 was carefully investigated by in situ X-ray diffraction (in situ XRD), and in situ X-ray
这项工作首次证明了SiO 2和超稳定沸石Y(USY)载体在Cu 2 P 2 O 7形成Cu 3 P的还原性中起着重要作用,从而影响了油酸脱氧的选择性。通过原位X射线衍射(原位XRD)和原位X射线吸收光谱法(原位XAS)仔细研究了Cu 2 P 2 O 7氢还原过程中负载型Cu 3 P纳米颗粒的形成。结果表明,Cu 2的转变P 2 O 7到Cu 3 P通过几个步骤发生。第一步,将所有负载的Cu 2 P 2 O 7前体还原为金属Cu。然后,在SiO铜粒子2支持与磷化合物反应,并直接变换成Cu 3 P.在另一方面,关于USY支撑铜粒子部分地变换到杯2和Cu(OH)2的所有转换成Cu前3 P.尽管经过多步转化,Cu 2 P 2 O 7 / USY的还原还原温度最低,并提供Cu 3粒径小的P。在Cu 3 P负载的催化剂上油酸的脱氧达到了近100%的转化率。两种催化剂均有利于环化和芳构化以形成环状和芳族化合物。与Cu