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Recovery of free volume in PIM-1 membranes through alcohol vapor treatment

Faiz Almansour, Monica Alberto, Rupesh S. Bhavsar, Xiaolei Fan, Peter M. Budd, Patricia Gorgojo

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 4,   Pages 872-881 doi: 10.1007/s11705-020-2001-2

Abstract: In this work, a regeneration method with alcohol vapors (ethanol or methanol) was developed to recoverThe gas permeability and separation performance, before and post the regeneration methods, were assessedOur results show that an 8-hour methanol vapor treatment was sufficient to recover the original gas permeability

Keywords： polymer of intrinsic microporosity (PIM)     PIM-1     physical aging     gas separation     vapor-phase regeneration    

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Solvent-Less Vapor-Phase Fabrication of Membranes for Sustainable Separation Processes Perspective

Junjie Zhao, Karen K. Gleason

Engineering 2020, Volume 6, Issue 12,   Pages 1432-1442 doi: 10.1016/j.eng.2020.05.002

Abstract: microporous materials such as metal–organic frameworks (MOFs) can be reduced when solvent-less vapor-phaseThis perspective covers several vacuum deposition processes, including initiated chemical vapor deposition(iCVD), initiated plasma-enhanced chemical vapor deposition (iPECVD), solvent-less vapor depositionThese solvent-less vapor-phase methods are powerful in creating ultrathin selective layers for thin-filmdevelopment of novel membrane materials and the scaling up of high-throughput reactors for solvent-less vapor-phase

Keywords： Membrane separation     Chemical vapor deposition     Atomic layer deposition     Molecular layer deposition    

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Shock wave of vapor-liquid two-phase flow

ZHAO Liangju, GAO Hong, TANG Jingwen, YUAN Yuexiang, WANG Fei

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 344-347 doi: 10.1007/s11708-008-0065-7

Abstract: The shock wave of vapor-liquid two-phase flow in a pressure-gain steam injector is studied by buildingThe results show that after the shock, the vapor is nearly completely condensed.The upstream Mach number and the volume ratio of vapor have a great effect on the shock.The pressure and Mach number of two-phase shock conform to the shock of ideal gas.

Keywords： available     mathematic     conform     vapor-liquid two-phase     analysis    

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Ultrafast solid-liquid-vapor phase change of a thin gold film irradiated by femtosecond laser pulses

Jing HUANG, Yuwen ZHANG, J. K. CHEN, Mo YANG

Frontiers in Energy 2012, Volume 6, Issue 1,   Pages 1-11 doi: 10.1007/s11708-012-0179-9

Abstract: Vaporization process which leads to ablation was described by tracking the location of liquid-vapor interface

Keywords： melting     evaporation     nucleation dynamics     nanoscale heat transfer    

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catalyst for the selective hydroamination of cyclohexene with cyclohexylamine to dicyclohexylamine in the vaporphase

Jingbin Wen, Kuiyi You, Minjuan Chen, Jian Jian, Fangfang Zhao, Pingle Liu, Qiuhong Ai, He’an Luo

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 3,   Pages 654-665 doi: 10.1007/s11705-020-1973-2

Abstract: The mesoporous silicon sulfonic acid exhibits excellent catalytic performance and stability in the vaporphase hydroamination reaction of cyclohexene with cyclohexylamine.

Keywords： mesoporous silicon sulfonic acid     catalytic hydroamination     cyclohexene     dicyclohexylamine     vapor phase    

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Development of new transient liquid phase system Au-Sn-Au for microsystem technology

Kirsten BOBZIN, Nazlim BAGCIVAN, Lidong ZHAO, Stefania FERRARA, Jan PERNE

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 370-375 doi: 10.1007/s11465-010-0107-9

Abstract: In this study, a new transient liquid phase (TLP) system Au-Sn-Au was developed for potential medical

Keywords： transient liquid phase     microtechnology     soldering     diffusion     physical vapor deposition (PVD)    

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Influence of Na

Rumin YANG, Fanhui MENG, Xiao WANG, Yaquan WANG

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 4,   Pages 401-408 doi: 10.1007/s11705-011-1129-5

Abstract: The samples were used as catalysts for the vapor phase Beckmann rearrangement of cyclohexanone oxime.

Keywords： silicalite-1     cyclohexanone oxime     vapor phase Beckmann rearrangement     ?-caprolactam    

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Flow boiling heat transfer in circulating fluidized bed

Xiaoguang REN , Jiangdong ZHENG , Sefiane KHELLIl , Arumemi-Ikhide MICHAEL ,

Frontiers in Energy 2009, Volume 3, Issue 1,   Pages 85-89 doi: 10.1007/s11708-008-0067-5

Abstract: In order to enhance heat transfer and mitigate contamination in the boiling processes, a new type of vapor-liquid-solid(3-phase) circulating fluidized bed boiling system has been designed, combining a circulating fluidized

Keywords： vapor-liquid-solid three phase     flow boiling heat transfer     circulating fluidized bed    

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Heat transfer characteristics of high heat flux vapor chamber

Dongchuan MO, Shushen LU, Haoliang ZHENG, Chite CHIN,

Frontiers in Energy 2010, Volume 4, Issue 2,   Pages 166-170 doi: 10.1007/s11708-009-0076-z

Abstract: the challenge of heat spreading in electronic products, highly efficient high heat flux heat transfer vaporA solid copper block with the same shape as the vapor chamber is used to compare the performance of thevapor chamber.The heat transfer characteristics of the vapor chamber are more superior to those of the copper blockthermal resistance of the test system is used to evaluate the heat transfer characteristics of the vapor

Keywords： high heat flux     vapor chamber (VC)     heat transfer characteristics     fast test    

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Migration of manganese and iron during the adsorption-regeneration cycles for arsenic removal

Fangfang CHANG, Jiuhui QU, Xu ZHAO, Wenjun LIU, Kun WU

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 4,   Pages 512-518 doi: 10.1007/s11783-011-0372-9

Abstract: Fe-Mn binary oxide incorporated into porous diatomite (FMBO-diatomite) was prepared in situ and regenerated in a fixed-bed column for arsenite [As(III)] and arsenate [As(V)] removal. Four consecutive adsorption cycles were operated under the following conditions: Initial arsenic concentration of 0.1 mg·L , empty bed contact time of 5 min, and pH 7.0. About 3000, 3300, 3800, and 4500 bed volumes of eligible effluent (arsenic concentration≤0.01 mg·L ) were obtained in four As(III) adsorption cycles; while about 2000, 2300, 2500, and 3100 bed volumes of eligible effluent were obtained in four As(V) adsorption cycles. The dissection results of FMBO-diatomite fixed-bed exhibited that small amounts of manganese and iron were transferred from the top of the fixed-bed to the bottom of the fixed-bed during As(III) removal process. Compared to the extremely low concentration of iron (<0.01 mg·L ), the fluctuation concentration of Mn in effluent of the As(III) removal column was in a range of 0.01–0.08 mg·L . The release of manganese suggested that manganese oxides played an important role in As(III) oxidation. Determined with the US EPA toxicity characteristic leaching procedure (TCLP), the leaching risk of As(III) on exhausted FMBO-diatomite was lower than that of As(V).

Keywords： arsenic     adsorption     filtration     regeneration     fixed-bed    

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New refrigeration system using CO vapor-solid as refrigerant

HUANG Dongping, DING Guoliang, QUACK Hans

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 494-498 doi: 10.1007/s11708-008-0070-x

Abstract: A refrigerant must be in the vapor-liquid phase in a vapor-compression refrigeration system, thereforeA refrigeration system with CO vapor-solid particles as refrigerant is put forward, by which a temperature

Keywords： refrigerant     adjustable     temperature     vapor-compression refrigeration     sublimator    

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biomaterial transplantation and genetic enhancement of intrinsic growth capacities to promote CNS axon regeneration

Bin Yu, Xiaosong Gu

Frontiers of Medicine 2019, Volume 13, Issue 2,   Pages 131-137 doi: 10.1007/s11684-018-0642-z

Abstract: The inhibitory environment that surrounds the lesion site and the lack of intrinsic regenerative capacity of the adult mammalian central nervous system (CNS) impede the regrowth of injured axons and thereby the reestablishment of neural circuits required for functional recovery after spinal cord injuries (SCI). To circumvent these barriers, biomaterial scaffolds are applied to bridge the lesion gaps for the regrowing axons to follow, and, often by combining stem cell transplantation, to enable the local environment in the growth-supportive direction. Manipulations, such as the modulation of PTEN/mTOR pathways, can also enhance intrinsic CNS axon regrowth after injury. Given the complex pathophysiology of SCI, combining biomaterial scaffolds and genetic manipulation may provide synergistic effects and promote maximal axonal regrowth. Future directions will primarily focus on the translatability of these approaches and promote therapeutic avenues toward the functional rehabilitation of patients with SCIs.

Keywords： spinal cord injury     biomaterial     extrinsic barrier     intrinsic regeneration capacity    

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Bone regeneration by stem cell and tissue engineering in oral and maxillofacial region

Zhiyuan Zhang

Frontiers of Medicine 2011, Volume 5, Issue 4,   Pages 401-413 doi: 10.1007/s11684-011-0161-7

Abstract: science and tissue engineering technology, is considered as an ideal alternative strategy for bone regenerationThe preclinical animal models for bone regeneration and the key translational points to clinical success

Keywords： bone regeneration     animal models     translational strategies     oral and maxillofacial region    

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Investigation on regeneration and energy storage characteristics of a solar liquid desiccant air-conditioning

SHI Mingheng, DU Bin, ZHAO Yun

Frontiers in Energy 2007, Volume 1, Issue 1,   Pages 85-90 doi: 10.1007/s11708-007-0008-8

Abstract: In this paper regeneration and energy storage characteristics were studied theoretically and experimentallyTwo criterion equations for heat and mass transfer in the regeneration process were obtained.The main factors that influence the regeneration process were analyzed.

Keywords： desiccant air-conditioning     regeneration process     air-conditioning system     energy     regeneration    

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Evaluation of power regeneration in primary suspension for a railway vehicle

Ruichen WANG, Zhiwei WANG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 265-278 doi: 10.1007/s11465-019-0571-9

Abstract: To improve the fuel economy of rail vehicles, this study presents the feasibility of using power regenerating dampers (PRDs) in the primary suspension systems of railway vehicles and evaluates the potential and recoverable power that can be obtained. PRDs are configured as hydraulic electromagnetic-based railway primary vertical dampers and evaluated in parallel and series modes (with and without a viscous damper). Hydraulic configuration converts the linear behavior of the track into a unidirectional rotation of the generator, and the electromagnetic configuration provides a controllable damping force to the primary suspension system. In several case studies, generic railway vehicle primary suspension systems that are configured to include a PRD in the two configuration modes are modeled using computer simulations. The simulations are performed on measured tracks with typical irregularities for a generic UK passenger route. The performance of the modified vehicle is evaluated with respect to key performance indicators, including regenerated power, ride comfort, and running safety. Results indicate that PRDs can simultaneously replace conventional primary vertical dampers, regenerate power, and exhibit desirable dynamic performance. A peak power efficiency of 79.87% is theoretically obtained in series mode on a top-quality German Intercity Express track (Track 270) at a vehicle speed of 160 mile/h (~257 km/h).

Keywords： railway vehicle     primary damper     power regeneration     ride comfort     running safety    

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Title Author Date Type Operation

Recovery of free volume in PIM-1 membranes through alcohol vapor treatment

Faiz Almansour, Monica Alberto, Rupesh S. Bhavsar, Xiaolei Fan, Peter M. Budd, Patricia Gorgojo

Journal Article

Solvent-Less Vapor-Phase Fabrication of Membranes for Sustainable Separation Processes

Junjie Zhao, Karen K. Gleason

Journal Article

Shock wave of vapor-liquid two-phase flow

ZHAO Liangju, GAO Hong, TANG Jingwen, YUAN Yuexiang, WANG Fei

Journal Article

Ultrafast solid-liquid-vapor phase change of a thin gold film irradiated by femtosecond laser pulses

Jing HUANG, Yuwen ZHANG, J. K. CHEN, Mo YANG

Journal Article

catalyst for the selective hydroamination of cyclohexene with cyclohexylamine to dicyclohexylamine in the vaporphase

Jingbin Wen, Kuiyi You, Minjuan Chen, Jian Jian, Fangfang Zhao, Pingle Liu, Qiuhong Ai, He’an Luo

Journal Article

Development of new transient liquid phase system Au-Sn-Au for microsystem technology

Kirsten BOBZIN, Nazlim BAGCIVAN, Lidong ZHAO, Stefania FERRARA, Jan PERNE

Journal Article

Influence of Na

Rumin YANG, Fanhui MENG, Xiao WANG, Yaquan WANG

Journal Article

Flow boiling heat transfer in circulating fluidized bed

Xiaoguang REN , Jiangdong ZHENG , Sefiane KHELLIl , Arumemi-Ikhide MICHAEL ,

Journal Article

Heat transfer characteristics of high heat flux vapor chamber

Dongchuan MO, Shushen LU, Haoliang ZHENG, Chite CHIN,

Journal Article

Migration of manganese and iron during the adsorption-regeneration cycles for arsenic removal

Fangfang CHANG, Jiuhui QU, Xu ZHAO, Wenjun LIU, Kun WU

Journal Article

New refrigeration system using CO vapor-solid as refrigerant

HUANG Dongping, DING Guoliang, QUACK Hans

Journal Article

biomaterial transplantation and genetic enhancement of intrinsic growth capacities to promote CNS axon regeneration

Bin Yu, Xiaosong Gu

Journal Article

Bone regeneration by stem cell and tissue engineering in oral and maxillofacial region

Zhiyuan Zhang

Journal Article

Investigation on regeneration and energy storage characteristics of a solar liquid desiccant air-conditioning

SHI Mingheng, DU Bin, ZHAO Yun

Journal Article

Evaluation of power regeneration in primary suspension for a railway vehicle

Ruichen WANG, Zhiwei WANG

Journal Article