点击次数：

论文类型：期刊论文

发表时间：2018-08-08

发表刊物：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录刊物：SCIE

卷号：57

期号：31

页面范围：10216-10225

ISSN号：0888-5885

摘要：Unsupported Ni3P-CePO4 catalysts were prepared by coprecipitation, followed by drying, calcination, and temperature-programmed reduction. The prepared catalysts were characterized by XRD, N-2 adsorption-desorption, TEM, STEM-EDS elemental mapping, XPS, NH3-TPD, FT-IR of adsorbed pyridine, and H-2-TPR. Their catalytic performances in hydrodeoxygenation (HDO) were investigated using an aqueous solution of phenol (5.0 wt %) as the feed. CePO4 was generated in coprecipitation and stable in the subsequent drying, calcination, and temperature-programmed reduction (final temperature 500 degrees C). It is shown that the addition of CePO4 resulted in enhanced HDO activity, and a maximum activity appeared at a Ce/Ni ratio of 0.3. The presence of CePO4 improved the dispersion of Ni3P significantly, leading to enhanced hydrogenation activity. CePO4 served as the major dehydration sites as well because of its surface acidity (mainly Lewis acid). In addition, the kinetics of the aqueous phase HDO of phenol and cyclohexanol catalyzed by Ni3P and by Ni3P-CePO4 with Ce/Ni ratio of 0.3 were investigated.