High efficiency catalytic transfer hydrogenation of ethyl levulinate to γ-valerolactone over Hf-based catalyst

被引:0
|
作者
Cai, Chao [1 ]
Liu, Zonghui [1 ]
Wang, Xi [1 ]
Wen, Zhe [1 ]
Yan, Bing [1 ]
Xue, Bing [1 ]
机构
[1] Changzhou Univ, Jiangsu Prov Engn Res Ctr Biodegradable Mat, Sch Petrochem Engn, Changzhou 213164, Jiangsu, Peoples R China
基金
中国国家自然科学基金;
关键词
gamma-valerolactone; Ethyl levulinate; Transfer hydrogenation; HfO2/SBA-15; ACID SITES; BIOMASS; CONVERSION; LEWIS; 1,4-PENTANEDIOL; ACID/ESTER; REDUCTION; LIQUID;
D O I
10.1016/j.cattod.2024.114902
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
The transformation of biomass platform compounds to value-added products is of great significance in biomass development. Herein, a series of wHfO2/SBA-15 (w = 0.7-12.5 wt%) catalysts were synthesized and applied to the catalytic transfer hydrogenation (CTH) of ethyl levulinate (EL) to gamma-valerolactone (GVL) reaction. The physicochemical properties of the prepared samples have been characterized by XRD, N2 adsorption-desorption, ICP, FT-IR, SEM, TEM, XPS, UV-vis, 29Si NMR, NH3-TPD, and Pyridine-FTIR. The introduction of hafnium species could produce abundant Lewis acid sites (LAS) without altering the ordered mesoporous structure of SBA-15. In addition, part of Hf species entered the SBA-15 framework and formed a small amount of Br & oslash;nsted acid sites (BAS). Among these catalysts, 10.4HfO2/SBA-15 showed an excellent catalytic performance, providing a very high EL conversion (96 %) and GVL selectivity (91 %) at 130 degrees C in 3 h using isopropanol as the H-donor. The high catalytic performance maybe related to the high surface area and large amount of LAS. Furthermore, this catalyst also showed a good stability and reusability.
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页数:9
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