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The 3rd International Congress on Advanced Materials（AM2016）

作者： Natthawan Prasongthum Prasert Reubroycharoen Program for Petrochemical and Polymer Science Faculty of Science Chulalongkorn University Department of Chemical Technology Faculty of Science Chulalongkorn University

In this research, a new kind of composite with high surface area and easy accessibility of active sites which composed of carbon nanotubes and silica fibers(CNTs-SF) were successfully synthesized using in situ steam reforming of ethanol. These materials were then used as the support for nickel loading of5 and 10 wt %. The Ni/CNTs-SF catalyst was characterized by techniques of BET, EDS, TEM, XRD, TPR and TGA-DTG. The effect of reaction temperature was investigated andcompared with those of silica fiber(Ni SF) and conventional porous SiO supported Ni catalyst(Ni SP). Nicatalysts supported on CNTs-SF exhibitedthe betterperformance than those of nickel catalysts supported on other silica. After 15 h time on stream, ethanol conversion were approximately decreased by 10%with Ni SP catalyst, while those of Ni/SF catalyst were remained almost constant for all time on steam. This outstanding performance could be attributed to the high accessibility of the support material.

关键词： Nickel-based catalyst steam reforming of ethanol CNTs-SiO2 fiber silica porous carbon nanotubes

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The nickel supported on silica hollow sphere catalyst for methane reforming reaction with carbondioxide

The nickel supported on silica hollow sphere catalyst for me...

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The 3rd International Congress on Advanced Materials（AM2016）

作者： Thachapan Atchimarungsri Masahiro Fujiwara Noritatsu Tsubaki Prasert Reubroycharoen Program in Petrochemistry and Polymer Science Faculty of Science Chulalongkorn University Research Institute for Chemical Process Technology National Institute of Advanced Industrial Science and Technology (AIST) Department of Applied Chemistry School of Engineering University of Toyama Department of Chemical Technology Faculty of Science Chulalongkorn University

Silica hollow sphere as mesoporous molecular sieve which had high various usability had been synthesized by the simple and inexpensive method from using a water/oil/water（W/O/W） emulsion *** silica hollow sphere as the support of nickel catalyst was compared with a commercial porous silica for methane reforming reaction with carbon *** samples were characterized by N-adsorption and desorption,X-ray diffraction,H-temperature programmed reduction,Energy dispersive X-ray spectrometry,Transmission electron microscope,X-ray photoelectron spectroscopy and Thermal gravimetric *** catalytic performance of all catalysts was inquired at 750℃,atmospheric pressure and GHSV of 12500 ml·g·*** results showed that the metallic nickel supported on silica hollow sphere had smaller particle size and higher dispersion than the commercial porous ***,superior performance catalytic in methane reforming of the nickel catalyst was proposed based on the mesoporous structure in the hollow sphere,its easily passing of the reactants to spheres,particularly the amount of decreased carbon deposition.

关键词： The nickel supported on silica hollow sphere catalyst for methane reforming reaction with carbondioxide

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Bioprinting: 3D Bioprinting: from Benches to Translational Applications (Small 23/2019)

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Small 2019年第23期15卷

作者： Marcel Alexander Heinrich Wanjun Liu Andrea Jimenez Jingzhou Yang Ali Akpek Xiao Liu Qingmeng Pi Xuan Mu Ning Hu Raymond Michel Schiffelers Jai Prakash Jingwei Xie Yu Shrike Zhang Division of Engineering in Medicine Department of Medicine Brigham and Women's Hospital Harvard Medical School Cambridge MA 02139 USA Department of Biomaterials Science and Technology Section Targeted Therapeutics Technical Medical Centre University of Twente Enschede 7500AE The Netherlands Key Laboratory of Textile Science and Technology College of Textiles Donghua University Shanghai 201620 P. R. China Biomedical Engineering Laboratory Instituto Tecnológico y de Estudios Superiores de Monterrey Monterrey Nuevo León 64849 Mexico Center of Biomedical Materials 3D Printing National Engineering Laboratory for Polymer Complex Structure Additive Manufacturing Baoding 071000 P. R. China Department of Bioengineering Gebze Technical University 41400 Gebze Kocaeli Turkey Sabanci University Nanotechnology Research and Application Center Sabancı University 34956 Tuzla Istanbul Turkey Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education School of Biological Science and Medical Engineering Beijing Advanced Innovation Center for Biomedical Engineering Beihang University Beijing 100083 China Department of Plastic and Reconstructive Surgery Renji Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200127 P. R. China Biosensor National Special Laboratory Key Laboratory of Biomedical Engineering of Education Ministry Department of Biomedical Engineering Zhejiang University Hangzhou 310027 P. R. China Department of Clinical Chemistry and Hematology University Medical Center Utrecht Utrecht 3584 CX The Netherlands Holland Regenerative Medicine Program University of Nebraska Medical Center Omaha NE 68198 USA

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Preparation of Co/SiO2-Al2O3 fiber catalyst by electrospinning for fischer-tropsch synthesis 8th

Preparation of Co/SiO2-Al2O3 fiber catalyst by electrospinni...

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8th International Conference on Materials science and technology, MSAT 2014

作者： Prasongthum, Natthawan Reubroycharoen, Prasert Program for Petrochemical and Polymer Science Faculty of Science Chulalongkorn University Bangkok10330 Thailand Department of Chemical Technology Faculty of Science Chulalongkorn University Bangkok10330 Thailand Center of Excellence on Petrochemical and Materials Technology Chulalongkorn University Research Building Bangkok10330 Thailand

ISBN: (纸本)9783038355526

The SiO2-Al2O3 fiber composites had been successfully prepared by the combination technique of electrospinning and sol-gel method. The effects of Al2O3 contents (1, 2, 3, 4 and 5%wt) on fiber diameter and morphology were investigated by SEM. It was observed that alumina content significantly influenced the average diameter of fiber which increased by increasing the alumina content. The prepared fiber composites were used as a support for cobalt (Co)-based catalysts for Fischer-Tropsch synthesis (FTS). The FTS performances over the fiber and porous catalysts were carried out in a fixed bed reactor at 280°C, 1 atm, and H2/CO of 2. The results showed that the fiber catalysts were easily reduced when comparing the porous catalyst. The fiber catalysts showed the activity at the same level of the porous catalyst, but their advantage was the lower water-gas shift reaction which produced less CO2 than the porous catalyst. The CO conversion was 59.62% with the fiber catalyst and 52.80% with the porous catalyst under the same experimental condition. The fiber catalyst gave the maximum methane selectivity of 96.08% compared to the porous catalyst (85.63%). © (2015) Trans Tech Publications, Switzerland.

关键词： Silica

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Correction: An environmentally benign approach to achieving vectorial alignment and high microporosity in bacterial cellulose/chitosan scaffolds

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RSC Advances 2017年第27期7卷 16737-16737页

作者： Guohui Li Avinav G. Nandgaonkar Youssef Habibi Wendy E. Krause Qufu Wei Lucian A. Lucia Key Laboratory of Eco-Textiles Ministry of Education Jiangnan University 1800 Lihu Avenue Wuxi 214122 Jiangsu Province P. R. China Key Laboratory of Pulp and Paper Science & Technology College of Light Chemical & Environmental Engineering Qilu University of Technology Jinan P. R. China Department of Materials Research and Technology (MRT) Luxembourg Institute of Science and Technology (LIST) 5 Avenue des Hauts-Fourneaux L-4362 Esch-sur-Alzette Luxembourg Fiber and Polymer Science Program North Carolina State University 2401 Research Dr Campus Box 8301 Raleigh NC 27695-8301 USA

Correction for ‘An environmentally benign approach to achieving vectorial alignment and high microporosity in bacterial cellulose/chitosan scaffolds’ by Guohui Li et al., RSC Adv., 2017, 7, 13678–13688.

Correction for ‘An environmentally benign approach to achieving vectorial alignment and high microporosity in bacterial cellulose/chitosan scaffolds’ by Guohui Li et al., RSC Adv., 2017, 7, 13678–13688.

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Ion Specificity on Electric Energy Generated by Flowing Water Droplets

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Angewandte Chemie 2017年第8期130卷

作者： Junwoo Park Suhwan Song ChaeHo Shin YoungJun Yang Stefan A. L. Weber Eunji Sim Youn Sang Kim Program in Nano Science and Technology Graduate School of Convergence Science and Technology Seoul National University Seoul 08826 Republic of Korea Department of Chemistry Yonsei University 50 Yonsei-ro Seodaemun-gu Seoul 03722 Korea Division of Industrial Metrology Korea Research Institute of Standards and Science Daejeon 34113 Republic of Korea Max Planck Institute for Polymer Research Ackermannweg 10 55128 Mainz Germany Institute of Physics Johannes Gutenberg University Mainz Duesbergweg 10–14 55128 Mainz Germany Advanced Institutes of Convergence Technology 864-1 Iui-dong Yeongtong-gu Suwon-si Gyeonggi-do 16229 Republic of Korea

The development of energy‐conversion devices using water movement has actively progressed. Ionovoltaic devices, which are driven by ion dynamics, show ion specificity by which different ions with identical charges show different output performance. However, the ion specificity remains poorly understood because the influence of the ion species on generated electric signals is not elucidated. The ion specificity in electric signals induced by flowing water droplet was investigated in terms of its relationship with the potential profile across the solid–liquid interface.

关键词： Energieumwandlung Fest-flüssig-Grenzflächen Ionenspezifität Ionovoltaische Funktionseinheiten

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Field-induced diffraction in polymer-stabilized in-plane switching liquid crystals with vertical alignment

Field-induced diffraction in polymer-stabilized in-plane swi...

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2015 SID International Symposium

作者： Weng, Libo Lee, Seung Hee Chien, Liang-Chy Chemical Physics Interdisciplinary Program Liquid Crystal Institute Kent State University KentOH United States Department of BIN Fusion Technology Department of Polymer Nano-Science and Technology Chonbuk National University Jeonju Jeonbuk Korea Republic of

A liquid crystal device which shows the capacity to perform as an electrical switchable diffraction grating is demonstrated. Periodical modulation in field-induced refractive index was realized in the in-plane switching liquid crystal device with vertical alignment, which resulted in distinct voltage-dependent diffraction patterns. © 2015 SID.

关键词： Diffraction

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Effect of Modified Silica Particles with Phenyltriethoxysilane on Mechanical and Thermal Properties of Natural Rubber Composites

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Macromolecular Symposia 2015年第1期354卷 62-68页

作者： Apinya Tunlert Pattarapan Prasassarakich Sirilux Poompradub Program in Petrochemistry and Polymer Science Faculty of Science Chulalongkorn University Bangkok 10330 Thailand Department of Chemical Technology Faculty of Science Chulalongkorn University Bangkok 10330 Thailand

The modification of silica surface by phenyltriethoxysilane (PhTES) as a modifying agent was carried out by sol-gel reaction of tetraethoxysilane (TEOS) as a precursor of silica. The condition to modify silica particles was the use of the mole ratio of TEOS to PhTES of 1:0.4 and ammonia as a catalyst at ambient temperature for 24 h. The characterization of modified silica surface was investigated by a fourier transform infrared spectroscopy and contact angle measurement. The modified silica particles were in a spherical shape, which was confirmed by a scanning electron microscopy. The mechanical properties and thermal stability of modified silica particles filled NR vulcanizates were greatly improved compared to those of unfilled NR vulcanizates due to the reinforcing effect and the high thermal oxidative stability of modified silica particles, respectively.

关键词： modified silica natural rubber sol-gel reaction surface modification

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Preparation of Green High Impact Polystyrene Beads via Suspension polymerization

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Macromolecular Symposia 2015年第1期354卷 69-75页

作者： Tatiya Kittiwattanakul Pattarapan Prasassarakich Napida Hinchiranan Program in Petrochemistry and Polymer Science Faculty of Science Chulalongkorn University Bangkok 10330 Thailand Department of Chemical Technology Faculty of Science Chulalongkorn University Patumwan Bangkok 10330 Thailand

The aim of this research was to investigate the important effects and their interaction on production of Green High Impact Polystyrene (HIPS) synthesized by using natural rubber (NR) as elastomeric phase via suspension polymerization initiated and stabilized by using benzoyl peroxide (BPO) and poly(vinyl alcohol) (PVA), respectively. The effects of reaction parameters: wt ratio of NR/styrene and PVA/NR including agitation rate on HIPS bead size were studied by using 2 k factorial design experiment. The HIPS bead size increased with increasing the NR content (0.01–0.08 w/w of NR/ST) in the mixture of NR/styrene syrup. Whereas, the increase in the PVA content (1.5–2.5 w/w of PVA/NR) and agitation rate (350–450 rpm) decreased HIPS bead size. Thermal gravimetric analysis (TGA) results were showed that HIPS containing the various amounts of NR had more thermal stability than the neat PS. Moreover, the glass transition temperature (T g ) of PS phase in the obtained HIPS bead was shifted from 97.9 to 84.2 °C when the wt ratio of NR/ST was increased to 0.08.

关键词： factorial design natural rubber polystyrene suspension polymerization synthesis

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Hierarchical Assemblies: One‐Step Hierarchical Assembly of Spheres‐in‐Lamellae Nanostructures from Solvent‐Annealed Thin Films of Binary Diblock Copolymer Micelles (Adv. Funct. Mater. 17/2017)

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Advanced Functional Materials 2017年第17期27卷

作者： Se Hee Kim Kookheon Char Seong Il Yoo Byeong‐Hyeok Sohn Interdisciplinary Program in Nano Science and Technology Seoul National University Seoul 151‐747 Korea School of Chemical and Biological Engineering The National Creative Research Initiative Center for Intelligent Hybrids Seoul National University Seoul 151‐747 Korea Department of Polymer Engineering Pukyong National University Busan 608‐739 Korea Department of Chemistry Seoul National University Seoul 151‐747 Korea

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