Liu Jing, Chen Pan, Deng Lihong, He Jing, Wang Luying, Rong Long, Lei Jiandu
Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, P. R. China.
Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, P. R. China.
Sci Rep. 2015 Oct 27;5:15576. doi: 10.1038/srep15576.
The development of a novel non-sulfided catalyst with high activity for the hydrotreatment processing of plant oils, is of high interest as a way to improve the efficient production of renewable diesel. To attempt to develop such a catalyst, we first synthesized a high activity flower-like Ni-PTA catalyst used in the hydrotreatment processes of plant oils. The obtained catalyst was characterized with SEM, EDX, HRTEM, BET, XRD, H2-TPR, XPS and TGA. A probable formation mechanism of flower-like Ni(OH)2 is proposed on the basis of a range of contrasting experiments. The results of GC showed that the conversion yield of Jatropha oil was 98.95%, and the selectivity of C11-C18 alkanes was 70.93% at 360 °C, 3 MPa, and 15 h(-1). The activity of this flower-like Ni-PTA catalyst was more than 15 times higher than those of the conventional Ni-PTA/Al2O3 catalysts. Additionally, the flower-like Ni-PTA catalyst exhibited good stability during the process of plant oil hydrotreatment.
开发一种用于植物油加氢处理的新型高活性非硫化催化剂，作为提高可再生柴油高效生产的一种方法，具有很高的研究价值。为了尝试开发这样一种催化剂，我们首先合成了一种用于植物油加氢处理过程的高活性花状Ni-PTA催化剂。通过扫描电子显微镜（SEM）、能谱仪（EDX）、高分辨透射电子显微镜（HRTEM）、比表面积分析仪（BET）、X射线衍射仪（XRD）、氢气程序升温还原（H2-TPR）、X射线光电子能谱仪（XPS）和热重分析仪（TGA）对所得催化剂进行了表征。基于一系列对比实验，提出了花状Ni(OH)2可能的形成机理。气相色谱（GC）结果表明，在360 °C、3 MPa和15 h(-1)的条件下，麻风树油的转化率为98.95%，C11-C18烷烃的选择性为70.93%。这种花状Ni-PTA催化剂的活性比传统的Ni-PTA/Al2O3催化剂高出15倍以上。此外，花状Ni-PTA催化剂在植物油加氢处理过程中表现出良好的稳定性。
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