Article
Chemistry, Physical
Guangzhi Xu, Zhuoheng Tu, Xingbang Hu, Mian Li, Xiaomin Zhang, Youting Wu
Summary: The utilization of biomass as a replacement for fossil resources in chemical synthesis is considered a crucial strategy for sustainable and environmentally-friendly chemical industry. To achieve this, the design and development of suitable catalysts for biomass conversion is of great significance. In this study, ionic buffering biphase systems (IBBSs) consisting of ionic buffering catalysts (IBCs) and an organic phase were proposed and developed for the efficient dehydration of xylose and hemicellulose to furfural (FF). The IBBSs demonstrated high FF yields and reduced use of NaCl, along with advantages such as simple preparation, thermal stability, and low cost. This work presents a new approach for the design and development of catalytic reaction-separation coupling systems for the efficient conversion of xylose and hemicellulose to FF.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Luca Ricciardi, Willem Verboom, Jean-Paul Lange, Jurriaan Huskens
Summary: This study demonstrates an effective conversion of xylose into furfural with a selectivity of over 90% using a three-solvent system. The use of an apolar aromatic solvent, a polar organic solvent, and acidic water catalyzes the formation of furfural. The transition of the three-solvent system from biphasic to monophasic conditions under reaction conditions is crucial for achieving high selectivity.
Article
Chemistry, Physical
Derun Hua, Hao Ding, Yunfeng Liu, Jian Li, Baojun Han
Summary: The environmentally friendly catalyst and task-specific ionic liquid used in the dehydration of xylose to furfural showed promising results with high xylose conversion and furfural yield under given conditions.
Article
Energy & Fuels
Qi Xia, Hong Peng, Yu Zhang, Guiming Fu, Yuhuan Liu, Zhihong Xiao, Lingling Huang, Haoran Bi
Summary: Exploring an environmentally-friendly method for furfural production from bamboo hemicellulose and xylose was conducted. Results showed that adding a small amount of water enhanced the yields, and the catalyst [Bmim]HSO4 exhibited great reusability.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Biochemistry & Molecular Biology
Negesso Wakushie Dulie, Belay Woldeyes, Hundessa Dessalegn Demsash
Summary: In this study, a new catalyst was prepared by functionalizing the lignin-carbohydrate complex structure in Eragrostis tef straw through simultaneous carbonization and sulfonation, showing excellent catalytic activity in the dehydration of xylose to furfural. The synthesized catalyst exhibited functional groups such as -SO3H, -COOH, and -OH, and showed significant reusability for 5 runs without loss of catalytic activity. This green strategy of using catalysts prepared from Eragrostis tef straw provides a solution to the problems associated with mineral acid catalysts in converting xylose to furfural.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Engineering, Chemical
Heng-Xing Lu, Wei-Yao Yang, Ying-Xian Shi, Hong -Bin Wang, Heng Mao, Le Sang, Zhi-Ping Zhao
Summary: In this study, the continuous conversion of xylose to furfural in water was investigated using micropacked bed reactors with a mixed solid acid catalyst. The best conversion and yield were achieved at a reaction time of 1.6 min, temperature of 170 degrees C, and pressure of 2 MPa, with values of 96.86% and 44.65%, respectively. The use of CO2 was found to enhance the selectivity and yield of furfural. Compared to batch operation, the micropacked bed reactors significantly increased the reaction rate and space-time yield by 1-3 orders of magnitude. Micropacked bed reactors can serve as an alternative to batch reactors for achieving efficient, green, continuous, and safe biomass dehydration processes.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Multidisciplinary Sciences
Lingjun Zhu, Hao Xu, Xiaoyan Yin, Shurong Wang
Summary: Through dilute acid hydrolysis coupled with solid acid catalysis, lignocellulosic biomass can be efficiently converted into bio-aviation fuel precursors. In this method, corn stover is hydrolyzed using sulfuric acid solution, and then saccharide solutions are catalyzed using a resin-derived carbon-based solid acid catalyst to obtain furfural and levulinic acid.
Article
Energy & Fuels
Guangzhi Xu, Zhuoheng Tu, Xingbang Hu, Mian Li, Xiaomin Zhang, Youting Wu
Summary: This study employed a series of [HSO4]-based protic Bronsted acidic ionic liquids (BAILs) as green catalysts to efficiently and sustainably prepare furfural (FF) from xylose or hemicellulose. Furfural yields of 75.4% or 80.4% were achieved under optimal conditions with [Hpy][HSO4] as the catalyst, surpassing most reported ionic liquid catalysts. The chemical structures of BAILs were confirmed, and the acidity was tuned through methyl substitution on the pyridinium ring. The catalytic performance, recyclability, and low cost of [Hpy][HSO4] make it suitable for large-scale FF production.
Article
Chemistry, Multidisciplinary
Luca Ricciardi, Willem Verboom, Jean-Paul Lange, Jurriaan Huskens
Summary: Developing strategies to increase the selectivity of furfural from biomass-based xylose is crucial for the development of green fuels and chemicals. This study investigates the impact of ionic strength on the dehydration of xylose and proposes a process concept that combines the use of PBA ester as the starting material, high ionic strength, and biphasic operation to achieve selective furfural production.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Applied
Lingxiao Gong, Dannin Feng, Jie Liu, Yonghui Yu, Jing Wang
Summary: A new method using ionic liquids as a solvent was developed for the extraction of feruloylated oligosaccharides (FOs) from corn bran. The study found that one specific ionic liquid was the most effective for the extraction, resulting in a higher FOs content compared to conventional extraction methods. The optimal conditions were determined using response surface methodology. The study also revealed that the ionic liquid breaks linkages to release FOs without affecting the linkage between ferulic acid and hemicellulose.
Article
Energy & Fuels
Phan Huy Hoang, Thai Dinh Cuong
Summary: A feasible catalytic process was developed for the simultaneous direct production of 5-hydroxymethylfurfural (HMF) and furfural from corncob biomass. By optimizing the conditions, the yields of HMF and furfural were significantly improved while the formation of levulinic acid was reduced.
Article
Chemistry, Physical
Shuang-Lan Hu, Hao Cheng, Ri-Yi Xu, Jun-Sheng Huang, Ping-Jun Zhang, Jian-Nan Qin
Summary: In this study, a series of chromium-magnesium hydrotalcite materials were synthesized using the coprecipitation method. The trivalent and alkali metals played the roles of Lewis acid and Bronsted base catalysts, respectively. The specific surface area of the catalyst material was increased by calcination. A 50.3% yield of furfural was obtained when xylose dehydration was conducted using a catalyst load of 100 mg and xylose substrate of 30 mg at 393 K for 16 h, with an optimal M3+/M2+ ratio of 13:20. The catalyst exhibited good stability, retaining 85.3% activity after five cycles.
MOLECULAR CATALYSIS
(2023)
Article
Energy & Fuels
Hao Xu, Shanshan Xiong, Yuan Zhao, Lingjun Zhu, Shurong Wang
Summary: In this study, xylose was used as the reaction substrate with a carbon-based solid acid catalyst prepared from pectin in a mixed solvent of water and gamma-valerolactone. The sulfonated catalyst showed characteristic peaks of sulfonic groups, and different sulfonation temperatures affected the acidity and catalytic performance of the catalyst. High furfural yield and xylose conversion were obtained under specific reaction conditions, influenced by temperature, time, solvent composition, and catalyst acidity.
Article
Chemistry, Physical
Junbo Zhang, Guoqiang Ding, Yueqing Wang, Fei Wang, Hongxing Wang, Yubo Liu, Yulei Zhu, Yongwang Li
Summary: In this study, H-Beta zeolites with different Si/Al ratios were prepared and evaluated for decarburization catalysis to produce furfural. The synergistic catalytic effect between the *BEA channel and framework-Al was found to be crucial. Fructose showed the highest FAL yield, and cellulose also had a relatively high yield.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Agricultural Engineering
Huanhuan Ma, Ian Beadham, Wenquan Ruan, Changbo Zhang, Yun Deng
Summary: The study found that adding amino acid-derived ionic liquids can significantly improve the quality of compost, increasing levels of humus and total nitrogen concentrations. Compared to the control group without this additive, the compost with the additive showed higher concentrations.
BIORESOURCE TECHNOLOGY
(2022)
