期刊
CATALYSIS COMMUNICATIONS
卷 17, 期 -, 页码 126-130出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2011.10.026
关键词
Hydroquinone; Hydrogenation; 1,4-Cyclohexanediol; Nickel-based catalyst; Alkaline earth metal modified
资金
- National Natural Science Foundation of China [20806018]
- Natural Science Foundation of Hebei Province [B2011201017]
- Hebei Education Department [ZD200910]
Effects of different alkaline earth metals (Mg, Ca, Sr) on the nickel-based catalysts for the continuous hydrogenation of hydroquinone were studied, and it was found that the by-products, characterized by GC-MS analysis, were mainly composed of phenol and cyclohexanol. The conversion of hydroquinone was 99.2% and the selectivity to 1,4-cyclohexanediol was above 96.7% over a Ni-Sr/gamma-Al2O3 catalyst at 160 degrees C and 2.0 MPa hydrogen pressure. The high selectivity of the Ni-Sr/gamma-Al2O3 catalyst was ascribed to its weak acidity due to the formation of SrCO3. confirmed from XRD and NH3-TPD characterizations. Moreover, it was proposed that SrCO3 can disperse and stabilize the active Ni species, making the catalyst stable during the 90 h service life test. (C) 2011 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据