Preparation of Pd Nanoparticles Stabilized by Modified Montmorillonite for Efficient Hydrodeoxygenation of Lignin-Derived Phenolic Compounds in Water

被引:4
|
作者
Wang, Xuerong [1 ,2 ]
Li, Chi [2 ]
Guo, Xinyuan [2 ]
Wang, Zhichao [2 ]
Cheng, Ruijing [2 ]
Xu, Tianwei [1 ]
Li, YiYing [3 ]
Wang, Jinhui [1 ,4 ]
Xu, Huanjun [1 ,2 ]
机构
[1] Qiongtai Normal Univ, Key Lab Child Cognit & Behav Dev Hainan Prov, Haikou, Peoples R China
[2] Qiongtai Normal Univ, Sch Sci, Haikou, Peoples R China
[3] Hainan Med Univ, Coll Basic Med & Life Sci, Haikou, Peoples R China
[4] Harbin Med Univ, Coll Pharm, Dept Med Chem & Nat Med Chem, Harbin, Peoples R China
来源
FRONTIERS IN CHEMISTRY | 2022年 / 10卷
基金
中国国家自然科学基金; 海南省自然科学基金;
关键词
lignin model compound; modified montmorillonite; hydrodeoxygenation; cycloalkanes; biofuels; BIO-OIL; CATALYSTS; CONVERSION;
D O I
10.3389/fchem.2022.961814
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Developing a new and efficient catalytic route for the production of alkanes by upgrading the aqueous phenolic biofuels still remains a challenge. Here, we designed and synthesized a bifunctional catalyst that uses natural montmorillonite (MMT) as support and combines metal active sites and Bronsted acid sites in the MMT via ion exchange and reduction roasting process. The catalytic activity of the as-synthesized Pd-MMT (H+) was evaluated by the hydrodeoxygenation (HDO) of a series of lignin-derived phenolic compounds in water. Our model reaction study reveals that the HDO of phenol undergoes an initial hydrogenation of aromatic rings to produce cyclohexanol and cyclohexanone, followed by the dehydration of cyclohexanol to provide intermediate cyclohexene and a final hydrogenation of cyclohexene to create a cyclohexane product. The combination of high metal catalytic activity and Bronsted acidity in Pd-MMT (H+) synergistically accelerated the HDO of phenol. Furthermore, good catalytic activity and recycling ability were also observed for other lignin-derived phenolic compounds.
引用
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页数:8
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