化工进展2016，Vol.35Issue(5)：1452-1459,8.DOI:10.16085/j.issn.1000-6613.2016.05.027
还原温度对Mo基催化剂物相及其加氢脱氧性能的影响
Effect of reduction temperature on Mo-based catalyst phase and its activity in hydrodeoxygenation reaction
摘要
Abstract
A series of Mo-based catalysts supported over CNTs were successfully prepared by controlling the reduction temperature during the catalyst synthesis. The properties of the obtained catalysts were systematically characterized by XRD,TEM,N2 adsorption,XPS and NH3/H2-TPD techniques,and the catalytic reactivity for the hydrodeoxygenation of stearic acid was evaluated. The results showed that Mo species on the surface of catalysts were reduced with the increase of reduction temperature,and the reduction process was as followed: MoO3→MoO2→Mo→Mo2C. The active phase was MoO2when reduction temperature was below 550℃. Further elevating the reduction temperature to 600℃,we found a mixed phase of MoO2/Mo/β-Mo2C existed.β-Mo2C was the main active phase when reduction temperature was over 650℃,and it exhibited higher activity of hydrodeoxygenation than the active phase of MoO2. In addition,the MoO2/Mo/β-Mo2C mixed phase catalyst at 600℃ showed the highest catalytic reactivity in hydrodeoxygenation of stearic acid due to its large specific surface area,more acid sites and stronger H2 adsorption ability.关键词
Mo基催化剂/还原/加氢/活性Key words
Mo-based catalyst/reduction/hydrogenation/reactivity分类
能源科技引用本文复制引用
梁俊梅,陈宇,丁冉冉,孟永强,王要武,杨明德,吴玉龙..还原温度对Mo基催化剂物相及其加氢脱氧性能的影响[J].化工进展,2016,35(5):1452-1459,8.基金项目
国家自然科学基金（21376140，21576155）及广东省科技计划（2015B020215004）项目。 （）
