Hydrodeoxygenation of phenol on bifunctional Ni-based catalysts: Effects of Mo promotion and support
Hydrodeoxygenation of phenol on bifunctional Ni-based catalysts: Effects of Mo promotion and support
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DOI：
10.1016/j.apcatb.2018.07.012
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发表时间：
2018-12
期刊：
影响因子：
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通讯作者：
Eleana Kordouli;B. Pawelec;C. Kordulis;A. Lycourghiotis;J. Fierro
中科院分区：
文献类型：
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作者：
Eleana Kordouli;B. Pawelec;C. Kordulis;A. Lycourghiotis;J. Fierro
在从生物液体中去除 O 的背景下，研究了在氧化铝和无定形二氧化硅氧化铝 (ASA) 上负载的 H2 活化 Ni 和 Mo-Ni 催化剂上溶解在十氢化萘中的苯酚的加氢脱氧 (HDO)。活性测试在310℃、总氢压3MPa的流动反应器中进行。通过多种物理化学技术（SBET、H2-TPR、HRTEM、吸附 CO 和 NH3 的 DRIFT 光谱、拉曼光谱、XPS、SEM-EDS 和 HRTEM）对催化剂样品进行表征，以获得催化剂活性-结构相关性。运行4小时后，Mo-Ni/ASA催化剂在苯酚的HDO中表现出最高的活性，这与其最高的Ni分散度、Mo促进作用和最大的酸度有关。 Mo-Ni/ASA 催化剂的无氧产物收率比通过硫化活化的商用 NiMoP(S)/Al2O3 催化剂高出 2 倍。讨论了金属和金属氧化物在 HDO 反应中的作用。
Hydrodeoxygenation (HDO) of phenol dissolved in decalin was studied over H2-activated Ni and Mo-Ni catalysts supported on alumina and amorphous silica alumina (ASA) in the context of the O-removal from bio-liquids. The activity test was carried out in a flow reactor at 310 °C and total hydrogen pressure of 3 MPa. The catalyst samples were characterized by several physico-chemical techniques (SBET, H2-TPR, HRTEM, DRIFT spectroscopy of adsorbed CO and NH3, Raman spectroscopy, XPS, SEM-EDS and HRTEM) in order to obtain catalyst activity-structure correlation. After 4 h on stream, the Mo-Ni/ASA catalyst displayed the highest activity in the HDO of phenol, which was linked with its highest Ni dispersion, the Mo promoting action and largest acidity. The Mo-Ni/ASA catalyst displayed 2 times higher yield of O-free products than a commercial NiMoP(S)/Al2O3catalyst activated by sulfidation. The role of metals and metal oxides species in HDO reaction has been discussed.