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- Otto Vogl (24)
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Articles 31 - 60 of 67
Full-Text Articles in Chemical Engineering
Study On Reduction Process Of Electrolyic Manganese Dioxide In Situ By Ultraviolet-Visible Absorption Spectroscopy, Li-Cai Zhu, Zhong-Zhi Yuan, Wei-Shan Li
Study On Reduction Process Of Electrolyic Manganese Dioxide In Situ By Ultraviolet-Visible Absorption Spectroscopy, Li-Cai Zhu, Zhong-Zhi Yuan, Wei-Shan Li
Journal of Electrochemistry
The concentrationsof soluble Mn(Ⅲ) species,during the reduction ofelectrolytic MnO_(2) (EMD)in alkaline solution,have been monitored in situ by UV-visible spectroscopy. The concentration of Mn(Ⅲ) ion in solution changes with discharge time.The first electron discharge process of EMD can be described by three different steps: 1) the reduction of Mn~(4+)ions on the surface of EMD particles and the structural defect regions within the EMD,2) the reduction of Mn~(4+)ions in ramsdellite,3)the reduction of Mn~(4+)ions in pyrolusite. During the second electron discharge of EMD, the soluble Mn(Ⅲ) is reduced to Mn(Ⅱ) , then Mn(OH)_(2)and Mn_(3)O_(4)are formed.
Electrocatalytic And Lifetime Studies Of Commercial Catalystsin A Pemfc, Cheng Xuan
Electrocatalytic And Lifetime Studies Of Commercial Catalystsin A Pemfc, Cheng Xuan
Journal of Electrochemistry
A particularly designed H-type cell was used to simulate the operating condition of a hydrogen-air proton exchange membrane fuel cell (PEMFC). The electrocatalytic activity, morphology, structure and lifetime of commercially available catalysts, carbon support platinum (Pt/C) and unsupported platinum-ruthenium (Pt-Ru), were preliminary studied by carrying out electrochemical measurements and by SEM, XRD techniques. The catalysts were simultaneously tested in the H-cell under operation, and also separately tested in a conventional electrochemical cell for comparison. It was found that the characteristic peaks of hydrogen adsorption/desorption on cyclic voltammograms shifted considerably to a more positive direction for Pt/C, while a more negative …
Fundamental Chemistry Of U And Pu In The Tbp-Dodecane-Nitric Acid System, Kenneth Czerwinski, Byron Bennett
Fundamental Chemistry Of U And Pu In The Tbp-Dodecane-Nitric Acid System, Kenneth Czerwinski, Byron Bennett
Separations Campaign (TRP)
The speciation of hexavalent U and tetravalent Pu will be examined in the TBP-dodecane-nitric acid systems. This topic is chosen based on data needs for separation modeling identified by the AFCI. Emphasis will be placed on studying the influence of nitrate and acetohydroxamic acid on U and Pu speciation as well as conditions where a third phase forms in the organic phase. The organic phase will be 30% TBP in dodecane. Equal volumes of aqueous and organic phase will be used. The speciation of the actinides in the aqueous and organic phase will be determined by a number of different …
Pictures From My Life With Polymer Science: Album 7, Otto Vogl
Pictures From My Life With Polymer Science: Album 7, Otto Vogl
Emeritus Faculty Author Gallery
No abstract provided.
Pictures From My Life With Polymer Science: Album 07, Otto Vogl
Pictures From My Life With Polymer Science: Album 07, Otto Vogl
Otto Vogl
No abstract provided.
Pictures From My Life With Polymer Science: Album 8, Otto Vogl
Pictures From My Life With Polymer Science: Album 8, Otto Vogl
Emeritus Faculty Author Gallery
No abstract provided.
Pictures From My Life With Polymer Science: Album 08, Otto Vogl
Pictures From My Life With Polymer Science: Album 08, Otto Vogl
Otto Vogl
No abstract provided.
Consequences Of Block Number On The Order-Disorder Transition And Viscoelastic Properties Of Linear (Ab)N Multiblock Copolymers, Lifeng Wu, Eric W. Cochran, Timothy P. Lodge, Frank S. Bates
Consequences Of Block Number On The Order-Disorder Transition And Viscoelastic Properties Of Linear (Ab)N Multiblock Copolymers, Lifeng Wu, Eric W. Cochran, Timothy P. Lodge, Frank S. Bates
Eric W. Cochran
The effect of block number on the order-disorder transition (ODT) and viscoelastic properties were studied for linear (AB) n multiblock copolymers. A series of symmetric poly(styrene-b-isoprene) n multiblocks ((SI) n, n = 1-10) were synthesized by anionic polymerization, and their order-disorder transition temperatures (T ODT) were located using dynamic mechanical spectroscopy. As n increases, T ODT approaches an asymptotic value, consistent with random phase approximation calculations. A systematic difference between the experimental and theoretical results is attributable to the effects of fluctuations, independent of the number of blocks. Addition of up to 20 vol % of a nonselective solvent depresses …
Pictures From My Life With Polymer Science: Album 9, Otto Vogl
Pictures From My Life With Polymer Science: Album 9, Otto Vogl
Emeritus Faculty Author Gallery
No abstract provided.
Pictures From My Life With Polymer Science: Album 09, Otto Vogl
Pictures From My Life With Polymer Science: Album 09, Otto Vogl
Otto Vogl
No abstract provided.
Progress In Research For Biofuel Cell, Yue Bao, Xia-Qin Wu
Progress In Research For Biofuel Cell, Yue Bao, Xia-Qin Wu
Journal of Electrochemistry
In this article, research progresses of the biofuel cell in recent years were summarized. The operation principle and classification of the biofuel cells were described. The role of the mediator for promoting electron transfer in biofuel cells and the techniques for improving the electric properties of biofuel cells, such as output potential, were discussed with some attracting research instances. Finally, the choke points for research of biofuel cell were explored, and the application prospect of biofuel cells was forecasted.
Preparation, Structure And Electrochemical Hydrogenation Of Carbon Nanotubes Supported Platinum Catalysts, Qing-Gang He, Xiao-Zi Yuan, Xian-Xia Yuan, Zi-Feng Ma
Preparation, Structure And Electrochemical Hydrogenation Of Carbon Nanotubes Supported Platinum Catalysts, Qing-Gang He, Xiao-Zi Yuan, Xian-Xia Yuan, Zi-Feng Ma
Journal of Electrochemistry
In this paper, Pt/CNTs catalyst was prepared and its electrocatalytic property was studied by obtaining cycling voltammetry curves (C-V) and Tafel curves. In addition, the XRD,XPS and TEM tests were carried out to determine the structure and composition of the catalysts. It can be found that the platinum loading has been increased significantly using a carbon nanotubes support. Dispersion of Platinum was better and gave more active sites. The electrochemical characteristic of Pt/CNTs was also more desirable than that of Pt/C catalyst(Johnson Matthey). In conclusion, carbon nanotubes can played a conspicuous role in "electrogenerative" processes of PEMFC hydrogenation reactor.
Template Synthesis Of Highly Ordered Monocrystalline Metal Nanowire Arrays By A Two-Step Ac Electrodeposition, Juan Xiang, Jing-Hua Tian, Zi-Mian Ni, Zhi-Feng Huang, Bo Liu, Zhong-Qun Tian
Template Synthesis Of Highly Ordered Monocrystalline Metal Nanowire Arrays By A Two-Step Ac Electrodeposition, Juan Xiang, Jing-Hua Tian, Zi-Mian Ni, Zhi-Feng Huang, Bo Liu, Zhong-Qun Tian
Journal of Electrochemistry
The monocrystalline metal nanowire arrays were prepared by using a two-step AC electrodeposition in porous anodic aluminum oxide (AAO) template. The growth mechanism of nanowires was discussed. As a result, it has been found that the second voltage pulse has a considerable effect on the pore-filling ratio, the uniformity and the crystal structure, whereas the initial voltage pulse affects only the pore-filling ratio. Using the two-step AC electrodeposition, a highly ordered monocrystalline metal nanowire arrays with a pore-filling ration above 95% can be easily obtained.
Studies On The Mechanism Of Electroreduction Of Oxalic Acid, Yu Zhan Li, Xin Liu, Rui Sheng Hu, Deng Ping Gu
Studies On The Mechanism Of Electroreduction Of Oxalic Acid, Yu Zhan Li, Xin Liu, Rui Sheng Hu, Deng Ping Gu
Journal of Electrochemistry
The electroreduction mechanism of oxalic acid on Pb electrode in Na_2SO_4 solution were investigated using high scan rate cyclic voltammetry and chronoamperometry. The dynamic parameters for the first step electron transter reaction of oxalic acid electroreduction by were determined. The corresponding reduction peak potentials of oxalic acid, glyoxylic acid and glycolic acid in the cyclic voltammogranis obtained in the same condition were compared, and the intermediate reduction products of oxalic acid were suggested. The results showed that oxalic acid is weakly absorbed on the lead electrode.
Electrochemical Synthesis Of Ferrate(Vi) By Anodic Oxidation, Jia-Ju Xu, Jian-Ming Wang, Wei-Hua Yang, Cheng Chen, Jian-Qing Zhang
Electrochemical Synthesis Of Ferrate(Vi) By Anodic Oxidation, Jia-Ju Xu, Jian-Ming Wang, Wei-Hua Yang, Cheng Chen, Jian-Qing Zhang
Journal of Electrochemistry
The ferrate(Ⅵ) was synthesized by electrochemical anodic oxidation. The effects of preparation conditions on the current yield of ferrate(VI) synthesis have been studied in this work. The experimental results showed that grey cast iron as an anodic material is suitable for electrochemical synthesis and NaOH solution as an electrolyte results in a higher current yield than KOH solution. The highest current yield was obtained at a current density (4.54) mA· cm~(-2),temperature 20 ℃ and 14 mol·dm~(-3) NaOH. In this case, a current yield of 68.5% was obtained by electrolysis for 1 h.
Pictures From My Life With Polymer Science: Album 10, Otto Vogl
Pictures From My Life With Polymer Science: Album 10, Otto Vogl
Emeritus Faculty Author Gallery
No abstract provided.
Pictures From My Life With Polymer Science: Album 10, Otto Vogl
Pictures From My Life With Polymer Science: Album 10, Otto Vogl
Otto Vogl
No abstract provided.
Hypothetical Thermodynamic Properties: The Boiling And Critical Temperatures Of Polyethylene And Polytetrafluoroethylene, James S. Chickos
Hypothetical Thermodynamic Properties: The Boiling And Critical Temperatures Of Polyethylene And Polytetrafluoroethylene, James S. Chickos
James Chickos
No abstract provided.
8th Bratislava International Conference On Modified Polymers: Modpol2003, Otto Vogl, Maria Omastova
8th Bratislava International Conference On Modified Polymers: Modpol2003, Otto Vogl, Maria Omastova
Emeritus Faculty Author Gallery
No abstract provided.
A. Cover Page, Title Page, Table Of Contents, And Forward, Otto Vogl
A. Cover Page, Title Page, Table Of Contents, And Forward, Otto Vogl
Emeritus Faculty Author Gallery
The History of the Pacific Polymer Federation (PPF) describes the background and pursuit that was needed to create the PPF and bring it to a functioning organization. It includes a general description, as well as edited Pacific Polymer Newsletters and articles that have been written in Polymer News describing additional PPF activities and the Pacific Polymer Conferences.
B. The Signing Of The Constitution Of The Pacific Polymer Federation, Otto Vogl
B. The Signing Of The Constitution Of The Pacific Polymer Federation, Otto Vogl
Emeritus Faculty Author Gallery
The Constitution of the Pacific Polymer Federation was signed on October 19, 1987 in Tokyo, Japan at the Inter-national House in Roppongi, Tokyo by the Chairman of the ACS Division of Polymer Chemistry, S, R. Eby, and the Chair-man of the Foreign Affairs Committee, O. Vogl; by the President of the Society of Polymer Science Japan, M. Takayanagi; Chairman and Vice President for International Affairs, A. Abe. For the Polymer Division of the Royal Aus-tralian Institute of Chemistry, Chairman D.J.T. Hill and Chair-man of the International Committee, J.H. O'Donnell signed the Constitution.
C. Pacific Polymer Federation Presidents, Otto Vogl
C. Pacific Polymer Federation Presidents, Otto Vogl
Emeritus Faculty Author Gallery
Names and photographs of the presidents of the Pacific Polymer Federation.
E. President Of The Pacific Polymer Federation, Otto Vogl
E. President Of The Pacific Polymer Federation, Otto Vogl
Emeritus Faculty Author Gallery
A history of the first president of the Pacific Polymer Federation.
D. Founding Of The Pacific Polymer Federation, Otto Vogl
D. Founding Of The Pacific Polymer Federation, Otto Vogl
Emeritus Faculty Author Gallery
An account of the process which led to the founding of the Pacific Polymer Federation and a copy of the Constitution of the Pacific Polymer Federation.
F. Growth Of The Pacific Polymer Federation, Otto Vogl
F. Growth Of The Pacific Polymer Federation, Otto Vogl
Emeritus Faculty Author Gallery
Describes the growth and development of the Pacific Polymer Federation,
G. Excerpts Of Pacific Polymer Federation Newsletters, Otto Vogl
G. Excerpts Of Pacific Polymer Federation Newsletters, Otto Vogl
Emeritus Faculty Author Gallery
Excerpts of Pacific Polymer Federation Newsletters 1-13, 1989-2003. Covers the presidencies of Otto Vogl, Takeo Saegusa, Joseph Salamone, Chung Yup Kim, Fosong Wang, Takeshi Ogawa, and Supawan Tantayanon.
H. Pacific Polymer Federation Conference Reports, Otto Vogl
H. Pacific Polymer Federation Conference Reports, Otto Vogl
Emeritus Faculty Author Gallery
Reports of the first through the sixth Pacific Polymer Federation Conferences, held biennially 1989-1999. Also includes reporting on the Pacific Polymer Federation.
8th Bratislava International Conference On Modified Polymers: Modpol2003, Otto Vogl, Maria Omastova
8th Bratislava International Conference On Modified Polymers: Modpol2003, Otto Vogl, Maria Omastova
Otto Vogl
No abstract provided.
A. Cover Page, Title Page, Table Of Contents, And Forward, Otto Vogl
A. Cover Page, Title Page, Table Of Contents, And Forward, Otto Vogl
Otto Vogl
The History of the Pacific Polymer Federation (PPF) describes the background and pursuit that was needed to create the PPF and bring it to a functioning organization. It includes a general description, as well as edited Pacific Polymer Newsletters and articles that have been written in Polymer News describing additional PPF activities and the Pacific Polymer Conferences.
D. Founding Of The Pacific Polymer Federation, Otto Vogl
D. Founding Of The Pacific Polymer Federation, Otto Vogl
Otto Vogl
An account of the process which led to the founding of the Pacific Polymer Federation and a copy of the Constitution of the Pacific Polymer Federation.