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2015年第4届力学与控制工程国际学术会议

作者： Sarunya Promkotra Tawiwan Kangsadan Department of Geotechnology Faculty of TechnologyKhon Kaen University Chemical and Process Engineering Program Department of Mechanical and Process EngineeringThe Sirindhorn International Thai-German Graduate School of Engineering (TGGS)King Mongkut’s University of Technology North Bangkok (KMUTNB)

A polyhydroxybutyrate-co-hydroxyvalerate（PHBV） is mingled with natural rubber latex（R） to develop its mechanical property of the blend. Normally, substantial effects of the PHBV are hard, fragile, and inelastic, whereas the natural rubber is represented itself as very high elastic matter. The mixtures between the PHBV and natural rubber latex（R） are considered in different proportions. The PHBV solutions（w/v） are defined suitability at 1%（P1）, 2%（P2）, and 3%（P3）. Their liquid mixtures of the PHBV to natural rubber latex（P:R） are fabricated the blended films in three different ratios of 2:3, 1:1 and 3:2, respectively. The PHBV blended films are characterized the crystallinity form by x-ray diffractometry（XRD）, which are appeared their identity crystals at 13.30 and 16.68 degree（2θ）. Mechanical characterizations of the blends are examined by a universal testing machine（UTM）. The average elastic moduli of P1, P2, and P3 mixtures are indicated as 773, 955, and 1,007 k Pa, respectively. Their tensile strengths, similarly to elastic moduli, enhance with the PHBV concentrations. The effects of mechanical behaviors and crystallinity reveal that the PHBV blends can be improved their properties by more flexible with natural rubber latex.

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Residence-Time Measurements in a Single-Drop Cell with Kühni Compartments

Residence-Time Measurements in a Single-Drop Cell with Kühn...

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2012 4th International Conference on chemical,Biological and Environmental engineering

作者： Anoma Chutrapukdeekul Florian Buchbender Tawiwan Kangsadan Andreas Pfennig Chemical and Process Engineering Program The Sirindhorn International Thai-German Graduate School of EngineeringKing Mongkut’s University of Technology North BangkokBangkok 10800Thailand Institute of Thermal Process Engineering RWTH Aachen UniversityAachen 52062Germany

Extraction columns with rotating internals,such as the Kühni extractor,are used *** the separation of biogenic liquid-liquid *** this type of extractor,compartments with impellers are placed one above the other in the *** important parameter in column design is the residence time of the drops inside the individual *** residence time,however,is strongly influenced by the compartment geometry and the operating ***,in this work the influence of the impeller diameter and compartment height were investigated for different drop diameters and rotor *** measurements of the drops residence time for toluene (d) + water (c) system were carried out in a single-drop lab-scale cell at AVT - Thermal process engineering,RWTH Aachen *** results for the discrimination of the compartment-geometry influence showed that using a bigger impeller diameter and lower compartment height leads to higher drop residence times.A very pronounced influence on the drops residence time can be found for small drop diameters.

关键词： Residence time,Single drop,Kühni compartments,Solvent extraction

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Petroleum Sources by Dynamic Petroleum Migration in Gas Reservoir

Petroleum Sources by Dynamic Petroleum Migration in Gas Rese...

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2013 International Conference on Frontiers of Environment,Energy and Bioscience(ICFEEB 2013)

作者： SARUNYA PROMKOTRA TAWIWAN KANGSADAN Department of Geotechnology Faculty of Technology Khon Kaen University Chemical and Process Engineering Program Department of Mechanical and Process Engineering The Sirindhorn International Thai-German Graduate School of Engineering (TGGS) King Mongkut's University of Technology North Bangkok (KMUTNB)

Secondary migration of a petroleum reservoir relates to the petroleum production in the gas production plant of a gas reservoir in the northeast of Thailand. Petroleum migration affects to buoyancy and capillary force with emphasis upon the relationship between condensate and other fluid hydrocarbons. Dynamic migration of petroleum is calculated within a gas reservoir. Pore-throat radius of mudstone is varied in the range of 0.55 to 2.10 μm, and the throat radius of carbonate reservoir rocks is in the variety of 0.49 to 8.65 μm. The capillary pressures and column height are decreasing inversely proportional to the throat radius. Petroleum migration with small throat radius resists the fluid migration in the column due to low buoyancy to generate its movement. The defined criteria for carbonate rocks can correlate to the reservoir rocks and also geological barriers. This outcome is able to conclude for the criteria that the throat radius should be more than 7.65 μm and column height for capillary pressure is less than 9.39 meters. Therefore, this secondary migration is appropriate for the petroleum reservoirs.

关键词： Petroleum Sources by Dynamic Petroleum Migration in Gas Reservoir

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Characteristic Behaviors in Compressive Strength of Two-Dimensional Aggregates

Characteristic Behaviors in Compressive Strength of Two-Dime...

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2013 Asian Pacific Conference on chemical,Material and Metallurgical engineering(APCCMME 2013)

作者： Sarunya Promkotra Tawiwan Kangsadan Department of Geotechnology Faculty of Technology Khon Kaen University Chemical and Process Engineering Program Department of Mechanical and Process EngineeringThe Sirindhorn International Thai-German Graduate School of Engineering (TGGS) King Mongkut’s University of Technology North Bangkok (KMUTNB)

A selected material, polystyrene microsphere series, is created as a building block of two-dimensional(2D) aggregates to examine scaling behaviors of the compressive stress condition. The 2D aggregated clusters are confined between the two cantilevers of 30 micron in diameter. These cantilevers can slide and force the aggregates move in the lateral direction. The compressive yield stress is directly measured during experiments by quantitative image analysis on the optical microscope. Locations of polystyrene aggregates are traced by Discrete Element Method(DEM), computer simulation. The 2D mechanical properties are examined for the particle size scaling behaviors as a function of particle area fraction and the average particle coordination number. The larger the particle size, the greater the modulus and the yield stress.

关键词： Compressive strength 2D aggregation colloids discrete element method(DEM)

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Biomass-Based Discrete Furan Oligomers as Materials for Electrochromic Devices

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ACS Sustainable Chemistry and engineering 2024年第1期12卷 459-469页

作者： Atayde, Eduardo C. Fong, Guan-Lun Yeh, Jyun-Yi Matsagar, Babasaheb M. Wang, Yu-Cheng Chen, De-Chian Peng, Chi-How Li, Yi-Pei Yamauchi, Yusuke Ho, Kuo-Chuan Wu, Kevin C.-W. Molecular Science and Technology Program Taiwan International Graduate Program (TIGP-MST) Academia Sinica No. 128 Sec. 2 Academia Road Taipei 11529 Taiwan Department of Chemistry National Tsing Hua University No. 101 Sec. 2 Kuang-Fu Road Hsinchu 30013 Taiwan Department of Chemical Engineering National Taiwan University No. 1 Sec. 4 Roosevelt Road Taipei 10617 Taiwan Sustainable Chemical Science and Technology Program Taiwan International Graduate Program (TIGP-SCST) Academia Sinica No. 128 Sec. 2 Academia Road Taipei 11529 Taiwan School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN) The University of Queensl Brisbane 4072 QLD Australia Department of Materials Process Engineering Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan Institute of Polymer Science and Engineering National Taiwan University No.1 Sec. 4 Roosevelt Rd. Taipei 10617 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University No. 135 Yuandong Rd. Taoyuan 320 Taiwan

Electrochromic devices (ECDs) are materials that can undergo reversible changes in transmittance when exposed to different applied potentials. While many conjugated heterocyclic oligomers, such as oligothiophenes, have been developed for this purpose, there is no reported study on the use of discrete oligomeric furans as ECD materials. In this work, we introduce a furan trimer that can be utilized as a discrete electrochromic material, which transitions from light yellow to red and has a very high coloration efficiency of 1940 cm²/C at 507 nm. We propose that the reversible π-stack formation of the oligomer radical cations is behind this phenomenon, as evidenced by both experimental and computational results. The derivability of this oligomer from biomass and its facile synthesis make it an interesting alternative for other existing organic electrochromic materials. © 2023 American chemical Society

关键词： electrochromism furan oligomer hydroxyalkylation−alkylation reaction solvatochromism π-stacks

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Temperature-dependent isotropic-to-nematic transition of charged nanoplates

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Physical Review E 2014年第2期90卷 020504(R)-020504(R)页

作者： Huawei Li Xuezhen Wang Ying Chen Zhengdong Cheng Soft Matter Center Guangdong Provincial Key Laboratory on Functional Soft Condensed Matter School of Materials and Energy Guangdong University of Technology Guangzhou 510006 China Artie McFerrin Department of Chemical Engineering Texas A&M University College Station Texas 77843-3122 USA Mary Kay O’Connor Process Safety Center Artie McFerrin Department of Chemical Engineering Texas A&M University College Station Texas 77843-3122 USA Department of Materials Science and Engineering Texas A&M University College Station Texas 77843-3003 USA Professional Program in Biotechnology Texas A&M University College Station Texas 77843-3122 USA

Studies of temperature-dependent phase behaviors of discotic colloids are found infrequently in the literature. We establish here the isotropic-to-nematic (I-N) transition phase diagram of charged platelets in the temperature-versus-volume fraction plane. We discover that the N phase can be melted by increasing temperature, and that coexistent samples are more sensitive to polydispersity at higher temperature and higher concentration.

关键词： ISOTROPIC properties PHASE transformations (Physics) DISCOTIC liquid crystals PHASE diagrams POLYDISPERSE media

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Synthesis of a magnetic iron oxide/zinc oxide engineered nanocatalyst for enhanced visible-light photodegradation of Cartasol brilliant violet 5BFN in aqueous solution

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Nano-Structures and Nano-Objects 2021年 26卷

作者： Algarín, Milagros Amaya, María Solano, Ricardo Patiño-Ruiz, David Herrera, Adriana Chemical Engineering Program. Nanomaterials and Computer-Aided Process Engineering Research Group. Universidad de Cartagena Cartagena Colombia Doctorate in Engineering Program. Nanomaterials and Computer-Aided Process Engineering Research Group. Universidad de Cartagena Cartagena Colombia

Engineered nanocomposites combine the physicochemical properties of different materials, increasing the applicability for environmental remediation. Cartasol brilliant violet (5BFN) is an organic and toxic compound that pollutes water sources due to the widespread use in the industry. In this study, a novel engineered nanocomposite was fabricated using magnetic iron oxide (IO-NPs) and zinc oxide (ZnO-NPs) nanoparticles and used for 5BFN photodegradation in aqueous solutions. The IO-NPs and ZnO-NPs were synthesized via the co-precipitation and green methods, respectively. A crystalline structure was confirmed for both nanoparticles with an average crystallite size of about 50nm for IO-NPs and 29nm for ZnO-NPs. The IO-NPs’ surface was modified using a silica matrix, allowing the encapsulation, accumulation, and formation of the ZnO-NPs shell. Although a superparamagnetic behavior is predominant, the ZnO-NPs promoted low spin coordination and decreased the saturation magnetization from 66.8 to 17.5 emu/g. A sterical stabilization with the siloxane and silanol groups of the silica matrix also decreases the magnetic response. The 5BFN photodegradation was evaluated varying the IO:ZnO weight ratio, initial pH, and nanocatalyst dose. A maximum photodegradation performance of 89.2% was achieved using 0.4 g/L of IO@ZnO-NPs and pH 6.8. The IO:ZnO weight ratio plays an important role, increasing the photocatalytic performance through the reduction of the bandgap. This enhances the visible light adsorption on the IO@ZnO-NPs, allowing a higher 5BFN photodegradation and extending their application for other organic dyes in water sources. © 2021 Elsevier B.V.

关键词： Cartasol brilliant violet 5BFN Iron oxide nanoparticles Nanocomposite Photodegradation Silica matrix Zinc oxide nanoparticles

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Measurement and correlation of supercritical CO_(2) and ionic liquid systems for design of advanced unit operations

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Frontiers of chemical Science and engineering 2009年第1期3卷 12-19页

作者： Hiroshi MACHIDA Ryosuke TAGUCHI Yoshiyuki SATO Louw J.FLORUSSE Cor J.PETERS Richard L.SMITH Department of Chemical Engineering Research Center of Supercritical Fluid TechnologyTohoku UniversitySendaiJapan Graduate School of Environmental Studies Tohoku UniversitySendaiJapan Laboratory of Applied Thermodynamics and Phase Equilibria Faculty of Applied SciencesDelft University of TechnologyJulianalaan 1362628 BL DelftThe Netherlands Laboratory of Process Equipment Department of Process and EnergyFaculty of MechanicalMaritime and Materials EngineeringDelft University of TechnologyLeeghwaterstraat 442628 CA DelftThe Netherlands Petroleum Institute Chemical Engineering ProgramBu Hasa BuildingRoom 2203P.O.Box 2533Abu DhabiUnited Arab Emirates

Ionic liquids combined with supercriticalﬂuid technology hold great promise as working solvents for developing compact *** liquids,which are organic molten salts,typically have extremely low volatility and high functionality,but possess high viscos-ities,surface tensions and low diffusion coefﬁcients,which can limit their ***_(2),on the other hand,especially in its supercritical state,is a green solvent that can be used advantageously when combined with the ionic liquid to provide viscosity and surface tension reduction and to promote mass *** solubility of CO_(2) in the ionic liquid is key to estimating the important physical properties that include partition coefﬁcients,viscosities,densities,interfacial tensions,thermal conductivities and heat capacities needed in contactor *** this work,we examine a subset of available high pressure pure component ionic liquid PVT data and high pressure CO_(2)-ionic liquid solubility data and report new correlations for CO_(2)-ionic liquid systems with equations of state that have some industrial applications including:(1)general,(2)fuel desulfurization,(3)CO_(2) capture,and(4)chiral *** measurements of solubility data for the CO_(2) and 1-butyl-3-methylimidazolium octyl sulfate,[bmim][OcSO4]system are reported and *** the correlation of the CO_(2) ionic liquid phase behavior,the Peng-Robinson and the Sanchez-Lacombe equations of state were considered and are *** is shown that excellent correlation of CO_(2) solubility can be obtained with either equation and they share some common characteristics regarding inter-action *** the Sanchez-Lacombe equation,parameters that are derived from the supercritical region were found to be important for obtaining good correlation of the CO_(2)-ionic liquid solubility data.

关键词： compact processes chiral ionic liquids separations thermodynamic properties equations of state

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Effect of the electrostatic potential on the internalization mechanism of cell penetrating peptides

Effect of the electrostatic potential on the internalization...

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2011 AIChE Annual Meeting, 11AIChE

作者： Flores, Karen A. Salgado, J. Cristian Zapata-Torres, Gerald Gerdtzen, Ziomara P. Gonzalez, María-Julieta Hermoso, Marcela A. Laboratory of Process Modeling and Distributed Computing Department of Chemical Engineering and Biotechnology University of Chile Santiago Chile Millennium Institute for Cell Dynamics and Biotechnology Centre for Systems Biology University of Chile Santiago Chile Department of Inorganic and Analytical Chemistry Faculty of Chemical and Pharmaceutical Sciences University of Chile Santiago Chile Centre for Biochemical Engineering and Biotechnology Department of Chemical Engineering and Biotechnology University of Chile Santiago Chile Laboratory of Cell Biology Cell and Molecular Program Faculty of Medicine University of Chile Santiago Chile Laboratory of Innate Immunology Institute of Biomedical Sciences University of Chile Santiago Chile

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Inherently safer reactor design for complex reactions based on calorimetry studies

Inherently safer reactor design for complex reactions based ...

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2011 AIChE Spring Meeting and 7th Global Congress on process Safety, 11AIChE

作者： Pineda-Solano, Alba L. Saenz-Noval, Lina Carreto-Vazquez, Victor H. Rogers, William J. Mannan, Sam Gao, Jun Papadaki, Maria Waldram, Simon Nayak, Subramanya Mary Kay O'Connor Process Safety Center Artie McFerrin Department of Chemical Engineering Texas A and M University College Station TX 77843-3122 United States IPSE SPEME University of Leeds LS2 9JT United Kingdom Department of Environmental and Natural Resources Management University of Ioannina Seferi 2 Agrinio GR 30100 Greece Chemical Engineering Program Texas A and M University at Qatar PO Box 23874 Doha Qatar

ISBN: (纸本)9780816910670

The N-oxidation of alkylpyridines by hydrogen peroxide is a reaction widely used in the pharmaceutical industry. This reaction is accompanied by the undesired gas-generating decomposition reaction of hydrogen peroxide. The oxygen generation, combined with the flammability of the alkylpyridines, represents a serious hazard of fire and explosion. In this work, a new operation strategy and reactor type for the N-oxidation of alkylpyridines are proposed based on calorimetrically obtained data. Previous studies on this system [8] showed that Langmuir-Hinshelwood type kinetics fits well with the Noxidation of this family of reactions and that increased temperature and catalyst concentration favor the N-oxidation reaction. New calorimetric measurements have been performed over an extended range of temperatures and catalyst concentrations in a closed reactor. These measurements confirm that the N-oxidation of alkylpyridines can actually be performed in a much more efficient and inherently safer manner if a closed reactor is used. The advantages and characteristics of such a reactor are explained and a preliminary design is proposed.

关键词： Calorimetry

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