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Supercritical carbon dioxide extraction of CLA-ethyl ester
Yingdi CHEN, Peng XU, Jian CHENG
《化学科学与工程前沿(英文)》 2011年 第5卷 第1期 页码 102-106 doi: 10.1007/s11705-010-0536-3
关键词: supercritical carbon dioxide extraction CLA-ethyl ester temperature gradient
Modeling of Ce(IV) transport through a dispersion flat combined liquid membrane with carrier P507
Liang PEI,Liming WANG,Zhanying MA
《环境科学与工程前沿(英文)》 2014年 第8卷 第4期 页码 503-509 doi: 10.1007/s11783-013-0540-1
关键词: Dispersion flat combined liquid membrane (DFCLM) dispersion phase feed phase 2-ethyl hexyl phosphonic acid-mono-2-ethyl hexyl ester Ce (IV)
张根旺,郭诤,杨天奎
《中国工程科学》 2001年 第3卷 第7期 页码 85-89
CLA是20世纪80年代末才被发现具有许多重要生理活性的天然脂肪酸,文章讨论了CLA的涵义界定、天然存在、重要的生理活性及其应用前景。
Toughening of vinyl ester resins by two-dimensional MXene nanosheets
《化学科学与工程前沿(英文)》 页码 1651-1658 doi: 10.1007/s11705-022-2208-5
关键词: MXene nanosheets 2D material vinyl ester resin modification coupling agent
The prediction of adsorption isotherms of ester vapors on hypercrosslinked polymeric adsorbent
Liuyan WU,Lijuan JIA,Xiaohan LIU,Chao LONG
《环境科学与工程前沿(英文)》 2016年 第10卷 第3期 页码 482-490 doi: 10.1007/s11783-015-0826-6
关键词: hypercrosslinked polymeric adsorbent adsorption isotherm ester prediction
XIAO Ling, WEI Xiuzhen, ZHU Baoku
《化学科学与工程前沿(英文)》 2007年 第1卷 第4期 页码 355-359 doi: 10.1007/s11705-007-0064-y
关键词: different cross-linking amine-ester temperature crosslinked efficient
K. VENKATESWARLU, B. S. R MURTHY, V. V. SUBBARAO, K. Vijaya KUMAR
《能源前沿(英文)》 2012年 第6卷 第3期 页码 304-310 doi: 10.1007/s11708-012-0195-9
关键词: additive exhaust gas recirculation (EGR) emissions ethyl hexyl nitrate (EHN) performance
Catalytic oxidation of carbon monoxide, toluene, and ethyl acetate over the
Zhidan Fu, Lisha Liu, Yong Song, Qing Ye, Shuiyuan Cheng, Tianfang Kang, Hongxing Dai
《化学科学与工程前沿(英文)》 2017年 第11卷 第2期 页码 185-196 doi: 10.1007/s11705-017-1631-5
关键词: cryptomelane-type manganese oxide octahedral molecular sieve oxygen mobility reducibility carbon monoxide oxidation volatile organic compound combustion
Ao Yang, Yang Su, Tao Shi, Jingzheng Ren, Weifeng Shen, Teng Zhou
《化学科学与工程前沿(英文)》 2022年 第16卷 第2期 页码 303-315 doi: 10.1007/s11705-021-2044-z
关键词: extractive distillation solvent selection conceptual design process optimization heat integration
Haibo ZHANG,Yanping YANG,He LIU,Jie SONG,Shibin SHANG,Zhanqian SONG
《农业科学与工程前沿(英文)》 2017年 第4卷 第1期 页码 97-105 doi: 10.15302/J-FASE-2016115
关键词: dehydroabietic acid bulk polymerization kinetics autocatalytic kinetic model
A comparison of the biological activities of ethyl acetate fractions from the stems and leaves of
Zhaolei WANG, Kai JIANG, Qinchao DING, Shujun LIU, Xiaobing DOU, Bin DING
《农业科学与工程前沿(英文)》 2020年 第7卷 第4期 页码 505-512 doi: 10.15302/J-FASE-2019271
Pursh (PCP) is a popular traditional medicinal plant in China, widely used for the treatment of a variety of liver diseases. Although it has been long recognized that the main active elements of PCP are contained in ethyl acetate fraction (EAF), little is known so far in terms of the relative effectiveness of EAF derived from the stems versus leaves of this plant. In the current study, we prepared EAF by reflux extraction and sequential extraction from the stems (SEAF) and leaves (LEAF) of PCP and tested their hepatoprotective efficacies. The extract rates and flavonoid contents of LEAF were higher than those of SEAF. EAFs (>50 μg·mL ) prevented lipid accumulation in cells and protected against lipotoxicity injury when the concentration exceeded 25 μg·mL . More than 95% free radicals released by 2,2-diphenyl-1-picrylhydrazyl (DPPH) were eliminated by 25 μg·mL SEAF and 50 μg·mL LEAF, respectively. Further, EAFs (25 μg·mL ) also showed protective antioxidant effects, with the activity of LEAF being significantly higher than that of SEAF. EAFs (10 mg·mL ) also showed similar unspecific bacteriostatic activity. In comparison with SEAF, LEAF contained more flavonoids and had a higher anti-oxidation capability and for these reasons we suggest it should be better for clinical use.
关键词: antibacterial anti-oxidation lipid accumulation lipotoxicity Penthorum chinense Pursh
用于锂离子电池的富醚/酯/氟黏结剂配方 Article
Xianqing Zeng, Donglin Han, Zeheng Li, Hongxun Wang, Gu Wu, Yong Deng, Kai Liu, Li Xie, Chengdu Liang, Min Ling, Yuchuan Huang
《工程(英文)》 2022年 第19卷 第12期 页码 199-206 doi: 10.1016/j.eng.2022.05.020
由于硅阳极体积膨胀过大,无法在高能量密度电池中实现实际应用。研究人员一直专注于在阳极中添加黏结剂以限制体积膨胀,来解决这一问题,因为黏结剂的氢键和机械性能可以用来增强黏附力和适应硅阳极的体积变化。在这里,我们综合考虑了黏结剂的氢键、力学性能、稳定性以及与电解液的相容性,设计了一种富醚/酯/氟的复合聚合物P(TFEMA-co-IBVE)。该黏结剂配方具有优异的稳定性、黏结性和机械强度,能够适应硅电极体积的剧烈变化,表现出优异的电化学性能,面积容量高达5.4 mA∙h∙cm−2。这种新型聚合物设计可应用于下一代锂离子电池的其他电极材料。
Potential hybrid feedstock for biodiesel production in the tropics
Solomon GIWA,Oludaisi ADEKOMAYA,Collins NWAOKOCHA
《能源前沿(英文)》 2016年 第10卷 第3期 页码 329-336 doi: 10.1007/s11708-016-0408-8
关键词: groundnut oil palm kernel oil methyl ester fuel properties tropics fatty acid composition
Ternary phase behavior of water microemulsified diesel-palm biodiesel
Nurul Atiqah Izzati MD ISHAK,Ismail Ab RAMAN,Mohd Ambar YARMO,Wan Mohd Faizal WAN MAHMOOD
《能源前沿(英文)》 2015年 第9卷 第2期 页码 162-169 doi: 10.1007/s11708-015-0355-9
关键词: palm methyl ester palm oil biodiesel microemulsion water microemulsified fuels
Methyl acetate–methanol mixture separation by extractive distillation: Economic aspects
Elena Graczová, Branislav Šulgan, Samuel Barabas, Pavol Steltenpohl
《化学科学与工程前沿(英文)》 2018年 第12卷 第4期 页码 670-682 doi: 10.1007/s11705-018-1769-9
Methyl acetate is considered low toxicity volatile solvent produced either as a by-product during methanol carbonylation or via acetic acid esterification with methanol. In both cases, pure methyl acetate has to be isolated from the reaction mixture. Simulation of methyl acetate separation from its mixture with methanol by extraction distillation was carried out in ASPEN+ software. In total three case studies were assumed using two different extraction solvents and two solvent regeneration strategies. In case A, novel extraction solvent 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ionic liquid, was considered. Raw material separation was achieved in an extraction distillation column while the solvent regeneration was accomplished in a second distillation column in this case. In case study B, the same extraction solvent was used; however, its regeneration was carried out in a single-effect evaporator. Dimethyl sulfoxide was the second extraction solvent selected. Its use in methyl acetate-methanol separation is presented in case study C. As high purity of dimethyl sulfoxide was required for the methyl acetate-methanol azeotrope breaking, its regeneration was carried out in the second distillation column only. To simulate the ternary methyl acetate–methanol–extraction solvent mixtures separation, vapor–liquid equilibrium was predicted based on the NRTL equation. Further, unknown properties of the considered ionic liquid and variation of these properties with temperature were predicted and introduced into the ASPEN+ components properties database. Based on these data, optimum operation parameters of the respective separation equipment were established. In all case studies, the same condition had to be fulfilled, namely minimum methyl acetate content in the distillate from the extraction distillation column of 99.5mol-%. Results of simulations using the respective optimum operation parameters were employed in the economic evaluation of the three separation unit designs studied. It was found that the least energy-demanding design corresponds to the case study B in terms of both capital as well as operation expenses.
关键词: methyl acetate 1-ethyl-3-methylimidazolium trifluoromethanesulfonate extraction distillation dimethyl sulfoxide economic evaluation
标题 作者 时间 类型 操作
Modeling of Ce(IV) transport through a dispersion flat combined liquid membrane with carrier P507
Liang PEI,Liming WANG,Zhanying MA
期刊论文
The prediction of adsorption isotherms of ester vapors on hypercrosslinked polymeric adsorbent
Liuyan WU,Lijuan JIA,Xiaohan LIU,Chao LONG
期刊论文
Reaction and characterization of crosslinking hyperbranched poly (amine-ester) with succine anhydride
XIAO Ling, WEI Xiuzhen, ZHU Baoku
期刊论文
Effect of exhaust gas recirculation and ethyl hexyl nitrate additive on biodiesel fuelled diesel engine
K. VENKATESWARLU, B. S. R MURTHY, V. V. SUBBARAO, K. Vijaya KUMAR
期刊论文
Catalytic oxidation of carbon monoxide, toluene, and ethyl acetate over the
Zhidan Fu, Lisha Liu, Yong Song, Qing Ye, Shuiyuan Cheng, Tianfang Kang, Hongxing Dai
期刊论文
Energy-efficient recovery of tetrahydrofuran and ethyl acetate by triple-column extractive distillation
Ao Yang, Yang Su, Tao Shi, Jingzheng Ren, Weifeng Shen, Teng Zhou
期刊论文
Synthesis and bulk polymerization kinetics of monomer dehydroabietic acid-(2-acryloyloxy-ethoxy)-ethylester
Haibo ZHANG,Yanping YANG,He LIU,Jie SONG,Shibin SHANG,Zhanqian SONG
期刊论文
A comparison of the biological activities of ethyl acetate fractions from the stems and leaves of
Zhaolei WANG, Kai JIANG, Qinchao DING, Shujun LIU, Xiaobing DOU, Bin DING
期刊论文
用于锂离子电池的富醚/酯/氟黏结剂配方
Xianqing Zeng, Donglin Han, Zeheng Li, Hongxun Wang, Gu Wu, Yong Deng, Kai Liu, Li Xie, Chengdu Liang, Min Ling, Yuchuan Huang
期刊论文
Potential hybrid feedstock for biodiesel production in the tropics
Solomon GIWA,Oludaisi ADEKOMAYA,Collins NWAOKOCHA
期刊论文
Ternary phase behavior of water microemulsified diesel-palm biodiesel
Nurul Atiqah Izzati MD ISHAK,Ismail Ab RAMAN,Mohd Ambar YARMO,Wan Mohd Faizal WAN MAHMOOD
期刊论文