JOURNAL OF APPLIED POLYMER SCIENCE
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2025
·
IF 2.8
Yu-Xiang Jia,Lin Xie,Xiao-Guang Xu,Meng Wang
The nonsolvent induced phase separation (NIPS) method and its variants have garnered significant attention for the fabrication of ion-exchange membranes (IEMs) due to several potential advantages, including ease of scalability, reduced material requirements, and enhancements in operational performance. However, the hazards associated with traditional membrane fabrication solvents poses a considerable limitation to the advancement and application of NIPS. This study explores the use of a green solvent, specifically γ-valerolactone (GVL), for the first time in the preparation of IEMs via the NIPS technique. Initially, fundamental investigations, including thermodynamic and kinetic analyses of the casting solution composed of GVL and chloromethylated polysulfone (CMPS), as well as assessments of membrane morphology and electrochemical properties, are conducted to evaluate the feasibility of IEM production in comparison to the NMP/CMPS system. Additionally, some applied experiments, such as desalination by electrodialysis (ED) and acid recovery via diffusion dialysis (DD), are performed to examine the impacts of casting solution composition on the performances of the resulting membranes. The results from the ED experiments indicate that the membrane produced from a 19 w.% GVL/CMPS solution can achieve a 27% reduction in energy consumption while maintaining a comparable current efficiency to commercial membranes. Furthermore, the DD experiments reveal that this membrane exhibits a H + dialysis coefficient of 42 × 10 − 3 $$ 42\times {10}^{-3} $$ m/h and a separation factor of 256, significantly surpassing the performance metrics of commercial membranes. These findings clearly demonstrate that GVL is a viable green solvent for the preparation of polysulfone IEMs with highly competitive performance characteristics.
研究领域:
材料科学
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环境工程
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化学工程
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产品关联
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
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2025
·
IF 4.8
Tinghao Han,Zhongdi Liu,Lincai Peng,Weipeng Song,Huai Liu,Wenlong Jia,Rui Zhang
The efficient production of γ-valerolactone (GVL) with high yield directly from xylose is of particular interest but remains a great challenge due to the long reaction path. We herein developed a facile catalytic system to directly convert xylose to GVL with a record-high yield of 54.3 %, employing β-zeolite supported Zr-based catalyst in 1,4-dioxane/isopropanol co-solvent. Using Zr(NO 3 ) 4 ·5 H 2 O as the Zr sources resulting in well-retained β-zeolite structure, larger surface area and pore volume and better dispersion of Zr species, as well as balanced acidic sites where higher amount of Brønsted acid sites promoted the ring-opening of furfural alcohol for this cascade reaction. Notably, the introduction of 1,4-dioxane facilitated the in situ formation of furfural (i.e. yield-determining step) by diluting the competitive adsorption behavior between isopropanol and xylose, allowing more xylose molecules to access the active center, thus promoting the sequential production of GVL with unexpectedly high yield. The present work provides a efficient and straightforward preparation of GVL from xylose, paving the pathway towards higher atom economy.
研究领域:
催化
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绿色化学
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生物质转化
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化学工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Chanjuan Yang,Shoukang Xiao,Liyu Chen,Yingwei Li,Kui Shen
γ-Valerolactone (GVL) as an important high-value chemical can be readily produced through the catalytic hydrogenation of renewable levulinic acid (LA). However, high reaction temperatures (70–240 ℃) and H 2 pressures (0.5–6 MPa) are usually required to achieve full LA conversion and desired GVL yield in previous studies. Herein, we report, for the first time, the ambient-condition upgrading of LA to GVL by rationally constructing a series of metallic–acidic Ru x Pt y /MIL-101 catalysts comprising RuPt-alloyed nanoparticles (NPs) and Lewis-acid sites within a chromium-based MOF (namely MIL-101). Benefiting from the favorable synergy between Ru and Pt in their alloyed NPs and abundant Lewis-acid sites in MIL-101, the best Ru 4 Pt 1 /MIL-101 featuring an optimized Ru/Pt molar ratio of 4:1 shows a complete LA conversion with > 99.9 % yield of GVL under unprecedented ambient temperature and pressure, affording a high turnover frequency (TOF) of 1480.5h −1 , which is 15.1 and 10.1 times that of its monometallic Pt/MIL-101 (98.3 h −1 ) and Ru/MIL-101 (146.7 h −1 ) counterparts, respectively. Detailed experiments and density functional theory (DFT) calculations suggest the RuPt-alloyed effect and Lewis-acid sites in Ru 4 Pt 1 /MIL-101 can optimize the adsorption energy of 4-hydroxyvaleric acid (HPA) to remarkably boosting its catalytic performance for this reaction.
研究领域:
催化
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绿色化学
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可再生能源
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材料科学
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化学工程
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产品关联
DOI
高影响因子
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
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2018
·Vol. 65
·期 11
·1398-1406
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IF 0.862
Ruiying Wang,Jianjia Wang,Huimin Zi,Haijun Wang,Yongmei Xia,Xiang Liu
Three novel heterogeneous Zr-containing organic–inorganic hybrid catalysts were prepared for the transfer hydrogenation of biomass-derived ethyl levulinate (EL) to γ-valerolactone (GVL) with isopropyl alcohol (IPA) as the hydrogen donor and were characterized by Fourier transform infrared (FT-IR), Temperature-programmed desorption (TPD), Thermogravimetry (TG), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), energy dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). On their basis, the effects of temperature, time, the amount of catalyst, and the solvent were investigated on the yield of GVL. A GVL yield of 96.5% with 99% EL conversion was obtained using Zr-Pg, which was prepared by the reaction of ZrCl 4 and phloroglucinol (Pg) in N , N -dimethylformamide (DMF) at room temperature. The high catalytic activity may be attributed to the strong basicity, which was increased by the sufficient quantity of phenate in the structure of Zr-Pg. Meanwhile, Zr-Pg could be efficiently and easily recycled at least five times without any notable loss of activity and selectivity. Through the results of comparative experiments and characterization, we propose a plausible reaction mechanism for the high activity of Zr-Pg.
研究领域:
催化化学
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生物质转化
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材料科学
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2015
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IF 4.642
Hu Li,Zhen Fang,Song Yang
Acid–base bifunctional superparamagnetic FeZrOx nanoparticles were synthesized via a two-step process of solvothermal treatment and hydrolysis–condensation, and were further employed to catalyze the conversion of ethyl levulinate (EL) to γ-valerolactone (GVL) using ethanol as both H-donor and solvent. ZrFeO(1:3)-300 nanoparticles (12.7 nm) with Fe3O4 core covered by ZrO2 layer (0.65 nm thickness) having well-distributed acid–base sites (0.39 vs 0.28 mmol/g), moderate surface area (181 m2/g), pore size (9.8 nm), and strong magnetism (35.4 Am2 kg–1) exhibited superior catalytic performance, giving a high GVL yield of 87.2% at 230 °C in 3 h. The combination of the nanoparticles with solid acid HY2.6 promoted the direct transformation of sugars to produce GVL in moderate yield (around 45%). Moreover, the nanocatalyst was easily recovered by a magnet for six cycles with an average GVL yield of 83.9% from EL.
研究领域:
催化化学
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材料科学
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绿色化学
✓ 已验证
产品关联
DOI
高影响因子
BIORESOURCE TECHNOLOGY
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2016
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IF 4.917
Tingwei Zhang,Wenzhi Li,Zhiping Xu,Qiyu Liu,Qiaozhi Ma,Hasan Jameel,Hou-min Chang,Longlong Ma
A novel carbon solid acid catalyst was synthesized by the sulfonation of carbonaceous material which was prepared by carbonization of sucrose using 4-BDS as a sulfonating agent. TEM, N 2 adsorption–desorption, elemental analysis, XPS and FT-IR were used to characterize the catalyst. Then, the catalyst was applied for the conversion of xylose and corn stalk into furfural in GVL. The influence of the reaction time, temperature and dosage of catalyst on xylose dehydration were also investigated. The Brønsted acid catalyst exhibited high activity in the dehydration of xylose, with a high furfural yield of 78.5% at 170 °C in 30 min. What’s more, a 60.6% furfural yield from corn stalk was achieved in 100 min at 200 °C. The recyclability of the sulfonated carbon catalyst was perfect, and it could be reused for 5 times without the loss of furfural yields.
研究领域:
化学工程
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可再生能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FUEL
·
2022
·
IF 8.035
Yao Liu,Feiyi Chen,Junhua Zhang,Liang He,Lincai Peng
Acid treatment is the key to improve the physicochemical properties of metal-lignocellulosic hybrid, thus contributing to the catalytic performance for catalytic transfer hydrogenation (CTH) of carbonyl compounds to their corresponding alcohols. Herein, a series of organic acids were introduced to assist the design of Zr- Pennisetum sinese hybrid. Comprehensive studies demonstrated the dramatic changes of specific surface and acid/base sites of the prepared hybrid. Remarkably, formic acid-assisted Zr@ PS -FA possessed the largest surface area and enhanced interaction effects between acids (Lewis acid and Brønsted acid) and Lewis base sites, which exhibited excellent catalytic activity for CTH of levulinic acid to γ-valerolactone with a high yield of 95.6% in isopropanol under moderate reaction conditions (180 °C and 1.5 h). Zr@ PS -FA also showed remarkable cycle stability, and it could be consecutively used at least six runs without a significant loss in catalytic activity. More gratifyingly, Zr@ PS -FA displayed a superior universality for CTH of various carbonyl compounds to their corresponding alcohols, demonstrating great potential for upgrading biomass-derived aldehydes/ketones.
研究领域:
化学工程
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生物质能
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催化科学
✓ 已验证
产品关联
DOI
高影响因子
Molecular Catalysis
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2022
·
IF 5.089
Ying Xiong,Xinwei Du,Peng Wang,Xiaogeng Feng,Junshuo Cui,Zhenning Lou,Weijun Shan,Haibiao Yu
This work aimed at elucidating the beneficial effect of the solid-phase grinding method on the catalytic performance of K- x Al for catalyzing γ-valerolactone to butene. Research indicated that a part of Al species was successfully introduced into the framework of KIT-6 support without destroying its original ordered mesoporous structure by the solid-phase grinding treatment method. Hence, Lewis and Brønsted acid sites were formed on the surface of the catalyst. By adjusting the amount of Al species, the content of weak acid sites (100-300 °C) on the catalyst surface can reach as much as 0.31 mmol·g −1 . Through the catalytic activity tested, the K-4Al catalyst exhibited optimum catalytic performance. The GVL conversion rate and butene yield can reach 96.2% and 90.1% at 300 °C, respectively. In addition, the K-4Al catalyst also showed satisfactory renewable performance in cycle tests. These findings will provide useful guidelines for further catalyst design for the preparation of butene from γ-valerolactone.
研究领域:
催化化学
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生物质转化
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS TODAY
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2022
·
IF 6.562
Ying Ji,Huifang Liu,Feng Wang,Xinwen Guo
It is a green and environment-friendly strategy to use biomass to assist the synthesis of catalysts and use the prepared catalysts for biomass utilization. In this study, aluminum-rich silicon-phosphorus-aluminum nanosheet (Al-SPAN) was synthesized with biomass amino acids as additives for catalytic transfer hydrogenation of ethyl levulinate to γ-valerolactone. Compared with commercial Al 2 O 3 , Al-SPAN showed greatly improved catalytic performance for the reaction. The conversion of ethyl levulinate was increased by 47 % and the yield of γ-valerolactone was increased by 52 %. The effects of different alcohol on the reaction properties were investigated, with isopropanol used as a safe and efficient hydrogen source. The catalyst has good stability with little change in reaction performance after five cycles.
研究领域:
化学工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2023
·
IF 7.4
Qiang Lu,Yuefang Chen,Weipeng Song,Chaonan Tao,Junhua Zhang,Yong Sun,Lincai Peng,Huai Liu
Direct utilization of cellulosic material to produce specialty chemicals such as levulinate ester could greatly increase biorefinery profitability, but low-level efficiency due to its structural nature limits the strategy for industrial deployment. We report herein that adding γ-valerolactone (GVL) co-solvent during the acid-catalyzed conversion of cellulose in ethanol leads to a high reaction rate and improved catalytic activity towards ethyl levulinate (EL) production. With GVL as the co-solvent (the volume ratio of GVL to ethanol in 1:4), the yield of EL highly enhanced from 31% to 56% under mild operating conditions (170 °C for 2 h) over a low loading Al(OTf) 3 of 0.005 mol/L. The mechanistic role of GVL co-solvent to accelerate EL formation from cellulose has been fully elucidated via the combination of experimental and theoretical approaches. It demonstrates that GVL intervention not only favored the dissolution and depolymerization of cellulose, but also enabled the formation of Al species with higher acidity and catalytic activity by modulating the solvation environment, both of which are in charge of promoting cellulose conversion to EL. The activation energy barriers for cellulose depolymerization and glucoside alcoholysis have decreased by 30.8 kJ/mol and 24.8 kJ/mol, respectively. The understanding of this solvation effect can be employed to optimize the rate and yield for production of the versatile bio-based ester compound straight from cellulose valorization.
研究领域:
化学工程
·
可再生资源与环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
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2025
·
IF 4.2
Yong Pan,Chaoqin Ren,Jingshu Jin,Yanjun Wang,Sébastien Leveneur,Juncheng Jiang
Sustainable and renewable energy plays a key role in coping with the global energy crisis and increasing demand for development. Biomass valorization is regarded as a potential way to substitute the fossil raw materials in various fields such as electricity, fuel, chemicals, pharmaceuticals, etc. Among the numerous chemicals derived from biomass, γ-valerolactone (GVL) is identified to be an important platform chemical with wide applications. Hydrogenation of levulinic acid (LA) with formic acid (FA) as hydrogen donor for GVL production attracts great attention from the principle of green chemistry. Compared to the enormous efforts on catalyst design, few studies focus on the safety issues of this hydrogenation process, such as thermal runaway risk. Aiming to fill this gap, hydrogenation of LA with FA catalyzed by synthesized homogeneous catalyst Ru-TsDPEN was chosen as a typical efficient process for the production of GVL. In particular, solvent effect and acid-base synergetic effect by adjusting acid-base loading were investigated for process optimization and further calorimetry study. Apparent pH was measured to indicate the strength of acidity and alkalinity of the reaction mixture. Thermal stability of chemicals and thermal risk assessment were performed by differential scanning calorimetry and accelerated rate calorimeter Phi-Tec II, respectively. The results showed significant acid-base synergetic effect on the desired catalytic system and thermal risk was medium under the optimized condition, which needs specific safety measures for loss prevention. Suggestions for inherently safer chemical process for GVL production with FA as hydrogen donor were proposed.
研究领域:
化学工程
·
可再生能源
·
绿色化学
✓ 已验证
产品关联
DOI
高影响因子
ENERGY
·
2024
·
IF 9
Bingbing Qiu,Jicheng Shi,Wei Hu,Yanfang Wang,Donghui Zhang,Huaqiang Chu
Hydrothermal liquefication of biomass to produce high-quality chemicals and liquid fuels is considered as a renewable and sustainable technology. Herein, a one-step hydrothermal method was used to prepare microcrystalline cellulose supported carbon-based catalyst PTA-BC with the activation factor of phosphotungstic acid. It was demonstrated by Py-FTIR, NH 3 -TPD and XPS that PTA-BC is not only rich in functional groups but also contains Brønsted acid sites (hydroxyl groups) and Lewis acid sites (C C, carboxyl groups). After experimental optimization, the optimum yield of furfural obtained from xylose catalyzed by PTA-BC was 81.02% at the reaction temperature of 180 °C and the reaction time of 20 min. The results show that PTA-BC contains –COOH, –OH and C C as catalytic sites and that the synergistic effect of these functional groups. The nature of the reaction solvent, appropriate reaction temperature and residence time are the main reasons for the good catalytic performance. This work provides a promising way for the synthesis of solid acid catalyst, which has a wide application prospect for the production of furfural.
研究领域:
化学工程
·
催化
·
可再生能源
·
生物质转化
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）