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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
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.
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页码:801 / 813
页数:13
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