Hydrogen production by aqueous phase reforming of phenol derived from lignin pyrolysis over NiCe/ZSM-5 catalysts
Hydrogen production by aqueous phase reforming of phenol derived from lignin pyrolysis over NiCe/ZSM-5 catalysts
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DOI：
10.1016/j.ijhydene.2017.09.096
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发表时间：
2018-01-11
影响因子：
7.2
通讯作者：
Chen, Guanyi
中科院分区：
文献类型：
--
作者：
Li, Xiangping;Yan, Beibei;Chen, Guanyi
采用初湿浸渍法合成了不同Ni:Ce比例的NiCe/ZSM-5催化剂，并在合成过程中添加了CeO2作为助剂。通过透射电子显微镜(TEM)、X射线衍射(XRD)、N-2-吸附、H-2程序升温还原(H-2-TPR)、X射线光电子能谱(XPS)、傅里叶变换红外光谱(FTIR)和紫外可见漫反射光谱(UV Vis DR)对所制备的催化剂的物理化学性质进行了表征。利用苯酚水相重整制氢反应测试了所得催化剂的催化活性。在催化剂中添加适量的Ce可以增加镍在ZSM-5载体上的分散性。结果表明，与使用8Ni/ZSM-5作为水相重整催化剂相比，8Ni8Ce/ZSM-5的氢选择性更高。在不同催化剂下反应后产物中一氧化碳含量很低。然而，两种催化剂的二氧化碳和碳氢化合物的分散性显着不同。 (C) 2017 年由爱思唯尔有限公司出版
Incipient wetness impregnation was used to synthesized the NiCe/ZSM-5 catalysts with different ratio of Ni:Ce, and CeO2 was added as an assistant in the synthesis process. The physicochemical properties of the prepared catalysts were characterized by Transmission electron microscopy (TEM), X-ray diffraction (XRD), N-2-Sorption, H-2 temperature programmed reduction (H-2-TPR), X-ray photoelectron spectroscopy (XPS), Fourier Transform infrared Spectroscopy (FTIR) and ultraviolet visible diffuse reflectance spectra (UV Vis DR). The catalytic activities of the obtained catalysts were tested by using the reaction of aqueous phase reforming of phenol to produce hydrogen. Adding appropriate doze of Ce to the catalysts can increase the dispersion of nickel on the ZSM-5 support. The results showed that hydrogen selectivity was higher over 8Ni8Ce/ZSM-5 than using 8Ni/ZSM-5 as aqueous phase reforming catalysts. The content of carbon monoxide in the products after reaction over different catalysts was very low. However, the dispersion of carbon dioxide and hydrocarbons was significantly different over the two catalysts. (C) 2017 Published by Elsevier Ltd