期刊
BIORESOURCE TECHNOLOGY
卷 269, 期 -, 页码 346-354出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.08.125
关键词
Liquefied fuel; Kraft lignin; Depolymerization; Synergic catalyst
资金
- Program of National Natural Science Foundation of China [51676178]
- National Key Technology R&D Program of China [2015BAD15B06]
- Transformational Technologies for Clean Energy and Demonstration
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA 21060101]
In this study, a novel modified nickel/H-beta (Ni/DeAl-beta) catalyst, which has active acidic sites and hydrogen binding sites, was prepared and used to produce liquefied fuel from lignin. The bifunctional Ni/DeAl-beta catalyst efficiently converted kraft lignin into liquefied fuel due to the synergistic effect of aluminum Lewis acid sites and nickel hydrogen binding sites. At a nickel content of 0.6 mmol/g(zeolite), the Ni/DeAl-beta catalyst gave a high liquid product yield of 88.6% at 300 degrees C for 36 h. Most of the liquid product was dissolved in petroleum ether (73% of 88.6%), which was mainly composed of monomeric and dimeric degradation products. Under these conditions, the higher heating values (HHV) increased from 24.9 MJ/kg for kraft lignin to 32.0 MJ/kg for the liquid product. These results demonstrated the bifunctional Ni/DeAl-beta catalyst could be an efficient catalyst for lignin to liquefied fuel conversion.
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