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

页码：801 / 813

页数：13

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