Study of X-ray photoelectron spectroscopy on coke deposited on Ni/HZSM-5 in bio-oil hydrodeoxygenation

被引：13
作者：
Li, Yu [1 ,2 ]
Zhang, Changsen [1 ,2 ]
Liu, Yonggang [1 ,2 ]
Chen, Guanghui [1 ,2 ]
Tang, Songshan [1 ,2 ]
Zhang, Ruiqin [1 ,2 ]
Tang, Xiaoyan [2 ]
机构：
[1] Coll Chem & Mol Engn, Zhengzhou 450001, Peoples R China
[2] Zhengzhou Univ, Res Inst Environm Sci, Zhengzhou 450001, Peoples R China
来源：
REACTION KINETICS MECHANISMS AND CATALYSIS | 2016年 / 117卷 / 02期
关键词：
HDO; XPS; Coke; Ni/HZSM-5; catalyst; CATALYSTS; DEACTIVATION; NI; OXIDATION; METHANE; SURFACE; ZEOLITES; FUELS; GAS;
D O I：
10.1007/s11144-016-0976-y
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The coke deposited on the surfaces of Ni/HZSM-5 catalyst in bio-oil hydrodeoxygenation (HDO) was characterized by using a technique of X-ray photoelectron spectroscopy. The results show that the compounds with carbon related oxygen are the main constituent of the coke on the Ni/HZSM-5 catalysts. The amount of carbon compounds with two oxygen atoms is decreased with increasing reaction temperature due to their splitting by activated H-2 during HDO processing of bio-oil. Carbon compounds with one oxygen atom are changed during the HDO of bio-oil processing, where soluble carbon compounds were converted to insoluble ones, with increasing reaction temperature leading to increase in hard carbon compounds. Graphite appeared on the surface of the Ni/HZSM-5 catalysts in the HDO of bio-oil at the highest temperature in the experiments. The related mechanism is presented in the paper.
引用
收藏
页码：801 / 813
页数：13
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