FUEL
·
2018
·
IF 4.908
Hang Xu,Dandan Zhang,Fengmin Wu,Xuefeng Wei,Jun Zhang
Deep eutectic solvents (DESs) are receiving increasing attention as ionic liquid analogues because of their environmentally friendly and very low-price characteristics. In this study, metal-based deep eutectic solvents (MDESs) were synthesized by combining cobalt chloride (CoCl 2 ), a hydrogen bond acceptor (HBA) such as choline chloride (ChCl), and hydrogen bond donors (HBDs) such as polyethylene glycol (PEG-200), ethylene glycol (EG), glycerol (GL), and propionic acid (Pr). The MDESs were used for the extractive catalytic oxidative desulfurization (ECODS) of fuels. Solid peroxymonosulfate (PMS) was selected as an oxidant over common ECODS oxidants such as liquid hydrogen peroxide because the former is cheaper, more stable, and less corrosive. The MDESs played dual roles (i.e., extractant and catalyst) during the ECODS process. One of the MDESs prepared (CoCl 2 -ChCl/2PEG) showed fast reaction rates with nearly 100% dibenzothiophene removal under the optimal conditions (6 g of model oil with an initial sulfur content of 500 ppm, 0.9 g of PMS solution, 2 g of CoCl 2 -ChCl/2PEG, 20 °C, and 60 min). The DESs prepared showed an outstanding recycling performance after 6 cycles without a significant decrease in activity. In the ECODS system, the reactivity of the three sulfur substrates studied followed the order: dibenzothiophene (DBT) > 4,6-dimethyldibenzothiphene (4,6-DMDBT) > benzothiophene (BT). In the case of the HBDs, the desulfurization efficiencies followed the sequence: PEG-200 > Pr > EG > GL. The oxidative product was dibenzothiophene sulfone (DBTO 2 ).
研究领域:
化学工程
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环境科学
·
催化材料
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DOI
高影响因子
CATALYSIS LETTERS
·
2021
·Vol. 152
·期 4
·1215-1223
·
IF 3.186
Wang Yun,Cheng Hong,He Jia-Rui,Yao Qiao-Xia,Li Li-Ling,Liang Zhi-Hui,Li Xiang
The Knoevenagel condensation of acetylacetone and aromatic aldehyde catalyzed by lipase from porcine pancreas(PPL) and α-amylase from hog pancreas in ionic liquids and deep eutectic solvents was achieved for the first time. The highest yields is up to 96.1%. Mild reaction conditions, enhanced rates, improved yields and reagents’ reactivity which is different from that in standard organic solvents are the remarkable features observed in ionic liquids and deep eutectic solvents. Graphical Abstract
研究领域:
生物化学
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有机化学
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DOI
高影响因子
Frontiers of Chemical Science and Engineering
·
2023
·Vol. 17
·期 11
·1776-1787
·
IF 4.5
Zhang Jing-Xuan,Wang Xuan,Feng Yan-Ru,An Jia-Yu,Chi Yu-Xuan,Liu Ya-Tai,Zhang Ling-Fei,Zhao Yun-Bo,Zeng Xiang-Feng,Wang Zi-Bo,Liu Jia-Shuai,Wang Yi-Fan,Dou Shuai-Yong,Duan Er-Hong,Meng Tao
Compared with traditional hydrodesulfurization, new nonhydrodesulfurization methods have the advantage of a high removal efficiency for thiophene compounds under mild conditions. However, independent nonhydrodesulfurization technologies are faced with their own shortcomings, such as limitations of the desulfurization performance and regeneration of materials. To overcome these limitations, four nanofluids were prepared by dispersing different metal-modified MCM-41 particles in deep eutectic solvent as multifunctional promoters to develop a comprehensive desulfurization method. Based on the excellent adsorbability and high catalytic activity of the dispersed particles and the outstanding extractability of deep eutectic solvent in nanofluids, a high sulfur removal of 99.33% was achieved for model oil under mild conditions in 15 min. The nanofluids also showed excellent reusability due to their high structural stability. In addition, NF@Cu/Al-MCM-41-2.5% exhibited the best desulfurization performance among the prepared nanofluids. This result was obtained because the introduction of Al ions increased the number of acid sites and defect sites to improve the catalytic activity and adsorbability, and the best affinity of Cu/Al-MCM-41 for the deep eutectic solvent favored the reaction mass transfer. This work opens the door to the development of a comprehensive nonhydrodesulfurization method based on the design of nanofluid materials.
研究领域:
化学工程
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材料科学
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环境科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Chen Xu,Fanyang Meng,Yaru Li,Hui Pan
A ternary acidic deep eutectic solvent (EH/MA/PEG400 DES) was synthesized with ethylamine hydrochloride (EH), DL-malic acid (MA) and polyethylene glycol 400 (PEG400) for the pretreatment of bamboo biomass. The EH/MA/PEG400 DES possessed superior biomass pretreatment capability, resulting in the removal of 75.42 % hemicellulose and 85.30 % lignin while retaining the majority of the cellulose (87.53 %) under a relatively high solid/liquid ratio (1:7). Pretreated bamboo biomass obtained a high glucose yield of 87.38 % after 72 h of enzymatic hydrolysis. Furthermore, EH/MA/PEG400 DES exhibited exceptional recyclability, which could afford 79.34 % lignin removal and 85.29 % glucose yield even at the seventh pretreatment cycle without introducing of fresh DES. The analysis on the recovered DES revealed that the accumulation of formic acid generated from carbohydrate degradation during the pretreatment process should account for the excellent recyclability of the EH/MA/PEG400 DES. The findings in this study could offer a sustainable and efficient approach for the lignocellulosic biomass refining.
研究领域:
生物化学
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可再生资源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Jingyi Chen,Shuchen Sun,Xuwei Luo,Faxin Xiao,Jing chen,Ziyan Yang,Chengfu Sui,Kuopei Yu,Ganfeng Tu
With the increasing trend of heavy and poor-quality petroleum, hydrotreating of heavy oil has rapidly developed, generating large amounts of spent catalysts. Recovering valuable metals from these catalysts is crucial because of their environmental hazards and scarcity of critical metal. This study developed a recovery method using choline chloride-oxalic acid deep eutectic solvent (DES) to efficiently extract vanadium (V) and molybdenum (Mo) while selectively separating nickel (Ni). Under optimized conditions (ChCl:oxalic acid = 1:2, water-to-DES ratio = 0.3 (v/v), 80 °C, 1:20 g/mL, 3 h), the leaching efficiencies reached 97.8 % for V and 95.1 % for Mo, with only 1.8 % for Ni. Kinetic modeling revealed a two-stage leaching mechanism: surface chemical reaction control initially (0–30 min) transitioning to mixed reaction-diffusion control (30–180 min). The activation energies for V and Mo were 18.08 kJ/mol and 18.93 kJ/mol in the initial stage, and 20.63 kJ/mol and 11.16 kJ/mol in the later stage, respectively. The high efficiency of the DES system originates from the synergistic effects of protonation, reduction, and coordination capabilities. Selective separation of Ni was achieved by forming insoluble nickel oxalate dihydrate (NiC₂O₄·2H₂O), while the alumina carrier (Al₂O₃) remained intact. These mechanisms ensure high efficiency and strong selectivity of the multimetal leaching system. This work is the first to demonstrate a highly selective DES-based approach for simultaneous efficient extraction of V and Mo with effective separation of Ni from spent hydrotreating catalysts under mild conditions, providing significant environmental benefits and a sustainable recovery strategy.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Gels
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2025
·Vol. 11
·期 5
·364
·
IF 5.3
Wanhang Jiang,Sara Toufouki,Subhan Mahmood,Ali Ahmad,Alula Yohannes,Yang Xiang,Shun Yao
A nanoliposome-integrated polymeric hydrogel was developed for the controlled release of essential oils (Argania spinosa, Passiflora edulis). A deep eutectic solvent (DES) composed of betaine and phytic acid enhanced the solubility and stability of essential oils, facilitating uniform encapsulation within nanoliposomes. The hydrogel exhibited a swelling capacity of 100% and retained 51.7% of water after 7 h, ensuring prolonged hydration. Structural analysis confirmed a homogeneous dispersion of nanoliposomes, contributing to the gradual release of bioactive components. Additionally, the hydrogel demonstrated high mechanical strength (7.5 MPa), ensuring flexibility and durability. The polymeric network, formed by acrylamide, sodium alginate, and bentonite, provided a stable and elastic matrix, optimizing water retention and mechanical performance. The controlled diffusion mechanism of the nanoliposomes was validated through in vitro release studies, indicating Fickian-controlled release behavior. These findings highlight the potential of this polymeric hydrogel system as a functional material for skincare formulations, offering enhanced hydration and sustained bioactive delivery.
研究领域:
材料科学
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药剂学
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植物学
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产品关联
DOI
PubMed
高影响因子
BIORESOURCE TECHNOLOGY
·
2025
·
IF 9
Qing Zhang,Jiao Meng,Qingwen Tian,Lili Zhang,Jing Shen,Yonghao Ni,Zhiguo Wang
The recyclability of lactic acid/choline chloride deep eutectic solvent (DES) in lignocellulose fractionation remains challenging. This study demonstrates that DES reuse reduces delignification efficiency, with a residual lignin content of 9.64% after three cycles, resulting in incomplete fiber separation. The molecular weight of dissolved lignin increased, and 2D HSQC NMR revealed reduced β-O-4 cleavage. Accumulated dissolved hemicellulose and its degradation products (e.g., acetic acid, furfural) altered DES properties, increasing viscosity and reducing hydrogen bond basicity, which hindered mass transfer, lignin-carbohydrate complex dissociation, and lignin depolymerization. To address these limitations, activated carbon adsorption (boosting delignification degree to 77%, near fresh DES at 80%) and prehydrolysis (achieving 82% after three cycles vs. 90% for fresh DES) are proposed to remove hemicellulose and its byproducts, minimizing their impact on recycled DES. This study demonstrates the recyclability of DES and proposes two strategies that significantly improve it, ensuring sustainable and efficient biomass fractionation.
研究领域:
生物质工程
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化学工程
·
可再生资源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2025
·Vol. 15
·期 18
·14072-14078
·
IF 4.6
Beixiao Zhang,Gul Muhammad,Liya Deng,Md Asraful Alam,Anqi Zhao,Thomas O. Butler,Zhenglong Li,Ximing Zhang,Jingliang Xu
Microalgae biomass is regarded as a potential feedstock for valuable compounds such as pigments, lipids and proteins. However, development of single molecule extraction processes is the most common practice. A green multiproduct extraction approach is needed for economically sustainable process development of the microalgal industry. Therefore, this study aims to investigate the sequential extraction of lutein and lipid from dry and wet Chlorella pyrenoidosa biomass pretreated with a choline chloride-based deep eutectic solvent (DES) under a sustainable biorefinery scheme. In this context, we have assessed the kinetic modeling of the solid–liquid extraction process for the aforementioned compounds, focusing on the effects of temperature and time. The maximum lutein (3.80 mg g−1) and lipid (95.0 mg g−1) contents from dry biomass were obtained at 45 °C in 40 min and at 70 °C in 90 min, respectively. From wet biomass, the maximum lutein (2.57 mg g−1) and lipid contents (87.47 mg g−1) were obtained at 35 °C in 40 min and at 70 °C in 90 min, respectively. The kinetics of the solvent-based extraction process for lutein and lipids were assessed via first-order and second-order kinetic models with an associated investigation of kinetic parameters, such as rate constants, saturation concentration and activation energies. We found that temperature is an important parameter that influences the extraction of all compounds and also has a significant impact on the kinetic parameters. Toxicity evaluation of the DES and economic assessment of DES vs. ionic liquids (ILs) were performed. The synthesis cost of the DES is lower than that of ILs, and Escherichia coli JM109 survivability assessment confirms the DES as a non-toxic solvent. The present study provides valuable insights into the sequential extraction for a high-value multiproduct biorefinery.
研究领域:
生物技术
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可再生资源与环境
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Qian Ao,Changhang Zhang,Xiaoyu Li,Yunchang He,Yu Zhang,Zhuo Zhao,Hailan Lian,Ying Zhou
Cellulosic materials have been widely applied in various fields such as construction, medicine, and new energy. However, the inherent structure of cellulose, composing of multiple hydroxyl groups, is highly susceptible to fungal degradation, thereby significantly limiting its high-value applications. Existing antifungal measures often fail to balance environmental friendliness and convenient preparation. Inspired by the antifungal properties of sulfated polysaccharides, this study utilized a deep eutectic solvent (DES) composed of sulfamic acid/1,3-propanediol/benzenesulfonic acid (S/P/B DES) to construct an intrinsically antifungal structure on cellulose via sulfation, making the preparation process more environmentally friendly and straightforward. Under the influence of the S/P/B DES, the hydroxyl groups at the C2, C3, and C6 positions of the cellulose pyranose ring underwent sulfation reactions, which imparted negative charge to the surface. The electrostatic interactions rendered the cellulose molecular chains more dispersed and amenable to rearrangement, combined with the acidolysis of the amorphous regions and the dissolution of the crystalline regions by the S/P/B DES, the cellulose chains spontaneously reorganized into a more compact structure. Using Material Studio demonstrated this structure would provide additional binding sites for fungi, thereby facilitating their adsorption and subsequent degradation, as a result, the antifungal performance of cellulose was significantly improved. Additionally, considering that Phyllostachys edulis contains over 50 wt% of cellulose and is highly susceptible to the degradation from fungal, which severely reduces its application value, this study further explored the potential surface application of the S/P/B DES in bamboo’s antifungal treatment.
研究领域:
材料科学
·
微生物学
·
植物学
✓ 已验证
产品关联
DOI
高影响因子
Reaction Chemistry & Engineering
·
2025
·
IF 3.1
Liping Luo,Wenxuan Wu,Yanan Shen,Yuheng Tao,Liqun Wang,Qing Qing
High-value valorization of cellulose and hemicellulose fractions in lignocellulosic biomass is crucial for a feasible biomass refinery scheme. In this study, an integrated strategy was developed for pretreatment of corncob and coproduction of furfural and high-concentration fermentable sugars. The hemicellulose fraction in raw corncob was selectively extracted to produce a xylose-rich hydrolysate via pretreatment with dilute p-toluenesulfonic acid (p-TsOH) under optimal reaction conditions (0.5% p-TsOH, 160 °C, and 30 min). Thereafter, the xylose hydrolysate was subjected to catalytic conversion in a DES (TEBAC : LA = 1 : 4) system at 190 °C for 10 min. Notably, 78.6% furfural yield was achieved, and the corresponding xylose conversion was close to 100.0%. In addition, the pretreated corncob residue exhibited excellent enzymatic digestibility as the yields of reducing sugar and glucose were 90.7% and 97.0%, respectively, at a high solid loading of 12%. This proposed approach represents an integrated strategy for coproduction of multiple products from agriculture residues.
研究领域:
生物化学
·
可再生资源工程
✓ 已验证
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Ying Wang,Hanlu Chen,Xiaoli Liu,Jingxuan Song,Senxin Xu,Reziwanguli Abulaiti,Dongmei Han,Yang Hu,Zhihua Wang,Fubo Gu
Hermetia illucens , with a short growth cycle, is promising as a valuable source of chitin. However, the optimal method for extracting chitin from this insect and its application for hemostasis has not been addressed. This work employed an environmentally friendly choline chloride-lactic acid deep eutectic solvent technology to extract chitin effectively from the Hermetia illucens pupae shells, realizing one-step removal of inorganic salts and proteins. The extraction process was optimized through the response surface methodology, which identified the optimal temperature (92 °C), time (5.6 h), and liquid-solid ratio (20 mL/g) as the conditions that yielded the highest chitin yield (28.40 %) and the highest purity (96.93 %). The structural characterization of the extracted chitin revealed an α-type structure with favorable thermal stability. Furthermore, by regulating the degree of deacetylation, we optimized the degree of protonation of chitin for producing a series of chitosan (Cts), thereby enabling the production of Cts2 with excellent in vitro hemostatic properties. The superior hemostatic performance of Cts2 can be attributed to significantly superior platelet adhesion, achieved preferred adsorption of fibrinogen, and improved blood coagulation. This work provides a theoretical basis for the efficient extraction and high-value application of chitin from Hermetia illucens .
研究领域:
生物化学
·
材料科学
·
医学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Zhe Jiang,Guolin Zheng,Yifan Cui,Wenda Wang,Xianqin Shang,Yimin Wei,Man Zhou,Ping Wang,Yuanyuan Yu,Qiang Wang
Applying natural dye is a green and available approach for the dyeing and simultaneous functionalizing of textiles. However, the commonly used mordant of metal ions to improve the dyeing effect results in massive toxic wastewater production, which decreases the environmentally friendly characteristics. In this work, the mordant and water substitute ability of choline chloride-ethylene glycol natural deep eutectic solvent (NADES), defined as the mixture of two or more primary metabolites at a particular composition becoming liquids via H-bond forces, was investigated during the dyeing process because it has been used as a green extraction and stability agent for the natural dye. To this end, the NADES and metal ion were used in three mordant dyeing wool and cotton processes of Platycodon Grandiflorus root dye, and the color and functionalization effect were compared to verify the method advance. The result indicated that natural deep eutectic solvent had a better effect as a mordant than the metal ion by enhancing the dye solubility, the dye uptake rate of fiber, and the dye polymerization trend via rich H-bonds among fiber, dye, and NADES. The dyed textile had an excellent functional performance, including UV resistance, antibacterial, antioxidation, and burning difficulty, with the preferable fastness. This method also showed good universality for other natural dyes and NADESs. Compared to the existing mordant dyeing technologies, the proposed technology had lower chemical reagent usage, cost, and energy consumption, whose residual solvent had good reusability for at least 10 times and better degradability. Overall, this paper supplied a potential and green approach using NADESs as alternatives to metal ions for the mordant dyeing textile using natural dye.
研究领域:
材料科学
·
纺织工程
·
环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）