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Crown ether-thiourea conjugates as ion transporters

Zhixing Zhao, Bailing Tang, Xiaosheng Yan, Xin Wu, Zhao Li, Philip A. Gale, Yun-Bao Jiang

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 1,   Pages 81-91 doi: 10.1007/s11705-021-2049-7

Abstract: Herein, we report synthetic crown ether-thiourea conjugates as a cation/anion symporter, which can transport

Keywords： ion transport     thiourea     crown ether     symport    

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Solvent-resistant porous membranes using poly(ether−ether ketone): preparation and application

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1536-1559 doi: 10.1007/s11705-022-2221-8

Abstract: Poly(ether−ether ketone) (PEEK) is a linear aromatic macromolecule, which can form semi-crystalline aggregative

Keywords： PEEK     phase inversion     solvent-resistant membrane     nanofiltration     membrane contactor    

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Enhancing fatigue life of cylinder-crown integrated structure by optimizing dimension

Weiwei ZHANG,Xiaosong WANG,Zhongren WANG,Shijian YUAN

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 1,   Pages 102-110 doi: 10.1007/s11465-015-0329-y

Abstract:

Cylinder-crown integrated hydraulic press (CCIHP) is a new press structure.The hemispherical hydraulic cylinder also functions as a main portion of crown, which has lower weightand higher section modulus compared with the conventional hydraulic cylinder and press crown.During the engineering design of cylinder-crown integrated structure, in order to increase the fatigue

Keywords： cylinder-crown integrated hydraulic press (CCIHP)     adaptive macro genetic algorithms (AMGA)     strain-controlled    

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Sulfonated poly(ether ether ketone)/zirconium tricarboxybutylphosphonate composite proton-exchange membranes

GAO Qijun, HUANG Mianyan, WANG Yuxin, CAI Yuquan, XU Li

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 1,   Pages 95-101 doi: 10.1007/s11705-008-0012-5

Abstract: Sulfonated poly(ether ether ketone) (SPEEK) is a very promising alternative membrane material for direct

Keywords： homogeneous mixture     PBTC     zirconium tricarboxybutylphosphonate     Nafion115     DMFC    

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Biomass to dimethyl ether by gasification/synthesis technology

Tiejun WANG, Yuping LI, Longlong MA, Chuangzhi WU

Frontiers in Energy 2011, Volume 5, Issue 3,   Pages 330-339 doi: 10.1007/s11708-010-0121-y

Abstract: Technical and economic analysis was done for the biomass to dimethyl ether (DME) technology to promote

Keywords： technical and economic analysis     biomass     dimethyl ether     gasification/synthesis    

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Dimethyl ether as alternative fuel for CI engine and vehicle

Zhen HUANG , Xinqi QIAO , Wugao ZHANG , Junhua WU , Junjun ZHANG ,

Frontiers in Energy 2009, Volume 3, Issue 1,   Pages 99-108 doi: 10.1007/s11708-009-0013-1

Abstract: As a developing and the most populous country in the world, China faces major challenges in energy supply and environmental protection. It is of great importance to develop clean and alternative fuels for internal combustion engines. On the basis of researches on DME engine and vehicle at Shanghai Jiaotong University in the last twelve years, fuel injection, combustion, performance and exhaust emissions of DME engine and DME vehicle are introduced in this paper. The results indicate that DME engines can achieve high thermal efficiency and ultra low emissions, and will play a significant role in meeting the energy demand while minimizing environmental impact in China.

Keywords： dimethyl ether (DME)     fuel injection     combustion process     emission control     CI engine     vehicle    

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Study on direct alcohol/ether fuel synthesis process in bubble column slurry reactor

Zhen CHEN, Haitao ZHANG, Weiyong YING, Dingye FANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 461-471 doi: 10.1007/s11705-010-0517-6

Abstract: The recent studies of direct alcohol/ether synthesis process in slurry reactors were reviewed, and theresearch work in our laboratory was carried out in this paper. a global kinetics model for direct dimethyl etherThe numerical simulations of reactor design of 100000 t/a dimethyl ether pilot plant indicate that higherpressure and lower temperature were favorable to the increase of CO conversion, selectivity of dimethyl ether

Keywords： syngas     alcohol/ether fuel     slurry catalyst     bubble column slurry reactor     global kinetics     mathematical model    

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Enhanced debromination of 2,2′,4,4′-tetrabromodiphenyl ether (BDE-47) by zero-valent zinc with ascorbic

Chaojin Jiang, Xiaoqian Jiang, Lixun Zhang, Yuntao Guan

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 3, doi: 10.1007/s11783-020-1224-2

Abstract: with ascorbic acid (ZVZ/AA) was developed and applied to debrominate the 2,2′,4,4′-Tetrabromodiphenyl ether

Keywords： 2     2′     4     4′-tetrabromodiphenyl ether (BDE-47)     Ascorbic acid     Reductive debromination     Zero-valent zinc    

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Exergy losses in premixed flames of dimethyl ether and hydrogen blends

Tongbin ZHAO, Jiabo ZHANG, Dehao JU, Zhen HUANG, Dong HAN

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 658-666 doi: 10.1007/s11708-019-0645-8

Abstract: A second-law thermodynamic analysis was conducted for stoichiometric premixed dimethyl ether (DME)/hydrogen

Keywords： second law analysis     flame     dimethyl ether (DME)     hydrogen     binary fuels    

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Removal of decabromodiphenyl ether (BDE-209) by sepiolite-supported nanoscale zerovalent iron

Rongbing FU,Na MU,Xiaopin GUO,Zhen XU,Dongsu BI

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 867-878 doi: 10.1007/s11783-015-0800-3

Abstract: sepiolite as a supporter was used to investigate the removal kinetics and mechanisms of decabromodiphenyl ether

Keywords： sepiolite-supported nanoscale zerovalent iron     decabromodiphenyl ether     debromination     adsorption     mechanism    

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Construction optimization of shallow-buried tunnel in gravel strata based on controlling settlement of the crown

Yu Jun,Liu Songyu and Gong Xiaonan

Strategic Study of CAE 2013, Volume 15, Issue 10,   Pages 97-102

Abstract: text-align: justify;">The stability of surrounding rock is closely connected with the settlement of the crownto optimize the project as a goal controlling settlement of the crown and stability of surrounding rockThe result showed that the crown settlement easily took place during excavation of shallow tunnel andwith different construction methods, the difference of crown settlement was great.It is found that CRD method is the most appropriate for gravel strata tunnel because the crown settlement

Keywords： gravel     surrounding rock of tunnel     numerical analysis     construction optimization     crown settlement    

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A density functional theory study on the mechanism of Dimethyl ether carbonylation over heteropolyacids

Kai Cai, Ying Li, Hongbao Shen, Zaizhe Cheng, Shouying Huang, Yue Wang, Xinbin Ma

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 319-329 doi: 10.1007/s11705-020-1957-2

Abstract: Dimethyl ether (DME) carbonylation is considered as a key step for a promising route to produce ethanol

Keywords： dimethyl ether     carbonylation     mechanism     heteropolyacids     density functional theory    

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Performance and emission characteristics of QHCCI dimethyl ether engine

WANG Ying, LI Wei, ZHOU Longbao, LIU Shenghua, HU Tiegang

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 401-405 doi: 10.1007/s11708-008-0075-5

Abstract: Experimental investigation into the effects of different pilot amounts of dimethyl ether (DME) on the

Keywords： Experimental investigation     single-cylinder direct-injection     exhaust temperature     dimethyl     compression ignition    

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Impact of dimethyl ether on engine seal materials

WU Ning, ZHANG Wugao, HUANG Zhen

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 279-284 doi: 10.1007/s11708-008-0042-1

Abstract: The resistance of many kinds of rubber materials to dimethyl ether (DME) was studied.

Keywords： impact     Common polyvinylchloride     different     constitution     ethylene propylene    

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Adsorption properties of polycarboxylate ether-based superplasticizer on cement particles and their resultant

Jinyoung YOON; Byoung Il CHOI; Jae Hong KIM

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 4,   Pages 506-514 doi: 10.1007/s11709-022-0813-5

Abstract: The cement dispersion performance of a polycarboxylate (PCE)-based superplasticizer is highly related to their adsorption behaviors as a function of time. This study evaluated effects of PCEs on rheological properties of cementitious materials. First, characteristics of PCEs were characterized via permeation chromatography (GPC) and Fourier-transform infrared spectrometry (FT-IR). The adsorption behavior of single and blended PCEs on cementitious composites was identified using total organic carbon analyzer (TOC). Based on the measurement of PCE adsorption, the changes of rheological properties of cementitious materials as well as the number of dispersed cement particles were characterized using a rheometer and laser spectroscopy, respectively. The experimental results support the systematic mechanism of PCE adsorption, cement dispersion, and the decrease in viscosity of cementitious materials.

Keywords： adsorption     polycarboxylate     superplasticizer     rheology     dispersion    

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Title Author Date Type Operation

Crown ether-thiourea conjugates as ion transporters

Zhixing Zhao, Bailing Tang, Xiaosheng Yan, Xin Wu, Zhao Li, Philip A. Gale, Yun-Bao Jiang

Journal Article

Solvent-resistant porous membranes using poly(ether−ether ketone): preparation and application

Journal Article

Enhancing fatigue life of cylinder-crown integrated structure by optimizing dimension

Weiwei ZHANG,Xiaosong WANG,Zhongren WANG,Shijian YUAN

Journal Article

Sulfonated poly(ether ether ketone)/zirconium tricarboxybutylphosphonate composite proton-exchange membranes

GAO Qijun, HUANG Mianyan, WANG Yuxin, CAI Yuquan, XU Li

Journal Article

Biomass to dimethyl ether by gasification/synthesis technology

Tiejun WANG, Yuping LI, Longlong MA, Chuangzhi WU

Journal Article

Dimethyl ether as alternative fuel for CI engine and vehicle

Zhen HUANG , Xinqi QIAO , Wugao ZHANG , Junhua WU , Junjun ZHANG ,

Journal Article

Study on direct alcohol/ether fuel synthesis process in bubble column slurry reactor

Zhen CHEN, Haitao ZHANG, Weiyong YING, Dingye FANG

Journal Article

Enhanced debromination of 2,2′,4,4′-tetrabromodiphenyl ether (BDE-47) by zero-valent zinc with ascorbic

Chaojin Jiang, Xiaoqian Jiang, Lixun Zhang, Yuntao Guan

Journal Article

Exergy losses in premixed flames of dimethyl ether and hydrogen blends

Tongbin ZHAO, Jiabo ZHANG, Dehao JU, Zhen HUANG, Dong HAN

Journal Article

Removal of decabromodiphenyl ether (BDE-209) by sepiolite-supported nanoscale zerovalent iron

Rongbing FU,Na MU,Xiaopin GUO,Zhen XU,Dongsu BI

Journal Article

Construction optimization of shallow-buried tunnel in gravel strata based on controlling settlement of the crown

Yu Jun,Liu Songyu and Gong Xiaonan

Journal Article

A density functional theory study on the mechanism of Dimethyl ether carbonylation over heteropolyacids

Kai Cai, Ying Li, Hongbao Shen, Zaizhe Cheng, Shouying Huang, Yue Wang, Xinbin Ma

Journal Article

Performance and emission characteristics of QHCCI dimethyl ether engine

WANG Ying, LI Wei, ZHOU Longbao, LIU Shenghua, HU Tiegang

Journal Article

Impact of dimethyl ether on engine seal materials

WU Ning, ZHANG Wugao, HUANG Zhen

Journal Article

Adsorption properties of polycarboxylate ether-based superplasticizer on cement particles and their resultant

Jinyoung YOON; Byoung Il CHOI; Jae Hong KIM

Journal Article