BIOMASS & BIOENERGY
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2024
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IF 5.8
Jian Xiong,Liying Li,Xuebin Lu,Lei Ye,Zhihao Yu,Wei Li,Ming Zhang,Yiming Li,Jiao Tao,Rui Zhang,Yina Qiao
The biomass-derived furan compound furfuryl alcohol can be utilized to produce fuel substitutes, furfuryl ethers, through etherification reactions with short-chain monohydric alcohols. In order to solve the problems of high reaction temperature and poor product selectivity in this research, a porous carbon-based material with adjustable acidic strength and content, and acid species ratio was synthesized and prepared in this work. Zirconium was employed as Lewis acid and adjusting its loading was the key method to drive the etherification reaction. The physicochemical properties of the material were confirmed based on BET, FTIR, XRD, NH 3 -TPD and other characterization methods. The active sites of the catalysts were identified by poisoning experiments, and the kinetics of the catalytic reactions were designed and discussed. The apparent activation energy of Zr5-ST-C was calculated according to the Arrhenius equation. This study provides an effective solution for the efficient synthesis and industrial application of furfuryl ethers.
研究领域:
化学工程
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材料科学
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可再生资源利用
✓ 已验证
产品关联
DOI
高影响因子
TETRAHEDRON
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2019
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IF 2.379
Jingyuan Li,Qingwen Song,Hengxuan Zhang,Ping Liu,Kan Zhang,Junwen Wang,Dengsong Zhang
Chemical fixation of carbon dioxide under mild reaction conditions e.g. atmospheric pressure and low temperature depends upon the ability of catalyst. Herein, a synergistic catalytic scheme of silver sulfadiazine/ n Bu 4 NBr was described for the three-component reaction of propargylic alcohols, CO 2 , and monohydric alcohols. This catalytic system was demonstrated effectively to provide β-oxopropyl carbonates in excellent yields (up to 99% yield with 5 mol% catalyst). The method tolerated a wide scope of propargylic alcohols and monohydric alcohols under atmospheric CO 2 pressure and solvent-free conditions. The excellent catalytic performance was attributed to the synergistic catalysis confirmed by the careful experiments.
研究领域:
催化
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有机化学
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绿色化学
✓ 已验证
DOI
高影响因子
PLANT PHYSIOLOGY AND BIOCHEMISTRY
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2020
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IF 3.72
Hua Huang,Qiaoqiao Lian,Ling Wang,Youxia Shan,Fengjun Li,Sui Kiat Chang,Yueming Jiang
The cuticular membrane covering almost all aerial plant organs has a primary function in limiting uncontrolled water loss . The guava fruits were collected and this work was done to study the potential contribution of cuticular chemical composition to fruit transpiration after harvest. The detailed cuticular chemical composition, based on gas chromatography together with mass spectrometry , and the transpiration rate determined gravimetrically in guava fruit were characterized in the present study. The predominant wax mixtures were fatty acids and primary alcohols with homologous series of C 16 –C 33 , as well as various pentacyclic triterpenoids with abundant amounts of ursolic acid, maslinic acid and uvaol. The most prominent cutin compounds were C 16 and C 18 ‒type monomers dominated by 9(10),16-diOH-hexadecanoic acid and 9,10-epoxy-ω–OH–octadecanoic acid, respectively. Relatively high water permeability with a value of 5.1 × 10 −4 m s −1 was detected for guava fruit. The lower efficiency of the cuticle as barrier to transpiration in guava fruit, as compared to that of other reported fruits, leaves, and petals, was seemingly related to the relatively short average chain-length of acyclic compounds in wax mixtures. These findings provide useful insights linking the chemical composition of the cuticular membrane that covers plant organs to putative physiological roles.
研究领域:
植物生理学
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植物生物化学
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农学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ChemSusChem
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2025
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IF 6.6
Zixuan Tan,Yihong Cai,Bo Yang,Hao Huang,Haijun Guo,Min Zhuang,Hui Luo,Qingwei Meng,Shaoqu Xie
Graphical Monohydric alcohols are a potential fuel, and herein, monohydric alcohols have been selectively synthesized from multicarbon sugars by modulating the electron distribution of Ru and enhancing the hydrodeoxygenation process of biomass. Ru-based catalysts are widely used in catalytic reactions, but the electron-deficient nature promotes strong decarbonylation, leading to complete deoxygenation during the conversion of polyhydroxy biomass. Despite extensive research, effectively suppressing this decarbonylation activity remains challenging. Herein, electron-rich Ru and electron-deficient Ni formed due to the electron migration of Ni → Ru have a synergistic catalytic effect, controlling the precise cleavage of C N bonds by Ru 0 and retaining most of the C O bonds. The amorphous Al 2 O 3 is sufficiently bound to the substrate to promote rapid hydrogenation. This modification effectively suppresses the intrinsic decarbonylation activity of Ru and improves selectivity for hydrodeoxygenation. Using carbohydrates as substrates, the Ru–Ni bimetallic catalysts preferentially promote the hydrodeoxygenation pathway, resulting in a significant increase in C3+ monohydric alcohol yields. This work presents a new strategy for modulating reaction pathways via electronic structure engineering, offering valuable insights into the potential of Ru–Ni systems for biomass conversion and sustainable alcohol synthesis.
研究领域:
催化化学
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材料科学
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化学工程
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生物质转化
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可持续化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2023
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IF 2.6
Yingying Zhang,Yuxin Zhang,Anlei Yi,Jie Wei,Dawei Fang
Ether-group functionalized ionic liquid N-(2-methoxyethyl)-N-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide, [C1OC2pyrr][NTf2], was synthesized and characterized by 1H NMR, 13C NMR, and TGA. The density and surface tension of binary mixtures including [C1OC2pyrr][NTf2] and monohydric alcohols were measured over the entire range of mole fractions in different temperatures. Based on the experimental data of density and surface tension, the volumetric and surface properties of [C1OC2pyrr][NTf2] and its binary mixtures were obtained, and Vm, αp, and VE were explored. The effects of temperature and composition on these properties were investigated, and the excess molar volume of two binary mixtures was well fitted by the Redlick-Kister equation. The molar surface Gibbs energy (gs) of [C1OC2pyrr][NTf2] and its binary mixtures was calculated, and the traditional Eötvös equation was modified; moreover, all parameters had a clear physical meaning. Finally, based on gs, the surface tension of [C1OC2pyrr][NTf2] and its binary mixtures was estimated, and it is in good agreement with experimental values.
研究领域:
化学
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物理化学
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热力学
✓ 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）