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5 results on '"Ria Yngard"'

1. Poly[aqua(μ-vinylphosphonato)cadmium]

Author

Laura K. Byington Congiardo, Joel T. Mague, Aaron R. Funk, Ria Yngard, and D. Andrew Knight

Subjects
Crystallography, QD901-999
Abstract

The title compound, [Cd(C2H3O3P)(H2O)]n, was obtained from vinylphosphonic acid and cadmium nitrate. The vinyl groups project into the interlamellar space and the structure is held together via van der Waals forces. The Cd2+ ion is six-coordinate and the geometry is best described as distorted octahedral, with O—Cd—O angles falling within the range 61.72 (13)–101.82 (14)°. Five of the coordinated oxygen atoms originate from the phosphonate group and the sixth from a bound water molecule. Cd—O distances lie between 2.220 (3) and 2.394 (2) Å. The water molecule is hydrogen bonded to a phosphonate oxygen atom.

Published
2011
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2. Thermal Stability of Solid Ferrates(VI): A Review

Author

Radek Zboril, Zoltán Homonnay, János Madarász, Virender K. Sharma, György Pokol, Libor Machala, Oldrich Schneeweiss, Ria Yngard, and Jan Filip

Subjects
chemistry.chemical_compound, Materials science, chemistry, Potassium ferrate, Oxidation state, Potassium, Thermal decomposition, Barium ferrate, Inorganic chemistry, chemistry.chemical_element, Thermal stability, Thermal treatment, Decomposition
Abstract

This review critically summarizes currently known results concerning the thermal decomposition of the most frequently used ferrate(VI) salts (K 2 FeO 4 , BaFeO 4 , Cs 2 FeO 4 ). Parameters important in the thermal decomposition of solid ferrates(VI) include the initial purity of the sample, a presence of adsorbed and/or crystal water, reaction atmosphere and temperature, crystallinity, phase transitions, and secondary transformation of the decomposition products. The confirmation and identification of metastable phases formed during thermal treatment can be difficult using standard approach. The in-situ experimental approach is necessary in some cases to understand better the decomposition mechanism. Generally, solid ferrates(Vl) were found to be unstable at temperatures above 200 °C as one-step reduction accompanied by oxygen evolution usually proceeds. The most known and used ferrate(VI) salt, potassium ferrate(VI) (K 2 FeO 4 ), decomposes at high temperatures to potassium ortho-ferrate(III), (KFeO 2 ), and potassium oxides. The resulting phase composition of the sample heated in air can be affected by accompanying secondary reactions with the participation of CO 2 and H 2 O in air. However, the thermal decomposition of barium ferrate(VI) (BaFeO 4 ) is not sensitive to constituents of air and is mostly reduced to non-stoichiometric BafeO x (2.5 < x < 3) perovskite-like phases stable under ordinary conditions. Such phases contain iron atoms with oxidation state +4; exhibiting the main difference in the decomposition mechanisms of K 2 FeO 4 and BaFeO 4 .

Published
2008

4. Ferrates

Author

Virender K. Sharma, Stuart Licht, Xingwen Yu, Zuzana Mácová, Karel Bouzek, M. Benová, J. Híveš, K. Bouzek, V. K. Sharma, Cun Zhong Zhang, HongBo Deng, Tingting Zhao, Feng Wu, Wei Liu, Shengmin Cai, Kai Yang, Jiang Chengchun, Liu Chen, Wang Shichao, L. Ninane, N. Kanari, C. Criado, C. Jeannot, O. Evrard, N. Neveux, Yurii D. Perfiliev, Libor Machala, Radek Zboril, Jan Filip, Oldrich Schneeweiss, János Madarász, Zoltán Homonnay, György Pokol, Ria Yngard, Nadine N. Noorhasan, J. Clayton Baum, Diane E. Cabelli, Oleg Pestovsky, Andreja Bakac, Michael D. Johnson, Brooks J. Hornstein, Jacob Wischnewsky, James D. Carr, Petra Á. Szilágyi, Ernő Kuzmann, Deyang Qu, Khoi Tran Tien, Nigel Graham, Jia-Qian Jiang, Hyunook Kim, Yuhun Kim, Laura L. McConnell, Alba Torrents, Clifford P. Rice, Patricia Millner, Mark Ramirez, Santosh K. Mishra, Nasri Nesnas, Benoit V. N. Chenay, X. Z. Li, B. L. Yuan, M. R. Ye, H. C. Lan, Myongjin Yu, Guisu Park, Shih-fen Yang, Ruey-an Doong, Jarrett R. Remsberg, Osman Arikan, Chulhwan Moon, Yong-Mei Liang, Jun Ma, Chunjuan Li, Yingjie Zhang, Ran, Virender K. Sharma, Stuart Licht, Xingwen Yu, Zuzana Mácová, Karel Bouzek, M. Benová, J. Híveš, K. Bouzek, V. K. Sharma, Cun Zhong Zhang, HongBo Deng, Tingting Zhao, Feng Wu, Wei Liu, Shengmin Cai, Kai Yang, Jiang Chengchun, Liu Chen, Wang Shichao, L. Ninane, N. Kanari, C. Criado, C. Jeannot, O. Evrard, N. Neveux, Yurii D. Perfiliev, Libor Machala, Radek Zboril, Jan Filip, Oldrich Schneeweiss, János Madarász, Zoltán Homonnay, György Pokol, Ria Yngard, Nadine N. Noorhasan, J. Clayton Baum, Diane E. Cabelli, Oleg Pestovsky, Andreja Bakac, Michael D. Johnson, Brooks J. Hornstein, Jacob Wischnewsky, James D. Carr, Petra Á. Szilágyi, Ernő Kuzmann, Deyang Qu, Khoi Tran Tien, Nigel Graham, Jia-Qian Jiang, Hyunook Kim, Yuhun Kim, Laura L. McConnell, Alba Torrents, Clifford P. Rice, Patricia Millner, Mark Ramirez, Santosh K. Mishra, Nasri Nesnas, Benoit V. N. Chenay, X. Z. Li, B. L. Yuan, M. R. Ye, H. C. Lan, Myongjin Yu, Guisu Park, Shih-fen Yang, Ruey-an Doong, Jarrett R. Remsberg, Osman Arikan, Chulhwan Moon, Yong-Mei Liang, Jun Ma, Chunjuan Li, Yingjie Zhang, and Ran

Subjects
Water--Purification--Oxidation--Materials --, Sewage--Purification--Oxidation--Materials -, Ferrites (Magnetic materials)--Congresses, Oxidizing agents--Congresses
Published
2008

5. Fire and Polymers IV

Author

Gordon L. Nelson, Charles A. Wilkie, Xiaoxia Zheng, Grace Chigwada, Marius Costache, Bok Nam Jang, Jinguo Zhang, G. Camino, G. Tartaglione, A. Frache, C. Manferti, P. Finocchiaro, L. Falqui, A. Laachachi, M. Cochez, M. Ferriol, E. Leroy, J. M. Lopez Cuesta, Alexander B. Morgan, Paul D. Whaley, Thomas S. Lin, Jeffrey M. Cogen, Marco Zanetti, Simona Valesella, Maria Paola Luda, Luigi Costa, S. Duquesne, J. Lefebvre, S. Bourbigot, R. Delobel, P. Recourt, David D. Jiang, Gy. Marosi, S. Keszei, Sz. Matkó, Gy. Bertalan, Everson Kandare, Daniel Hall, Jeanne M. Hossenlopp, Feng Yang, Ria Yngard, Aliea Hernberg, B. K. Kandola, S. Nazaré, A. R. Horrocks, P. Myler, Jianqi Wang, Zhidong Han, Usman Sorathia, Ignacio Perez, Serge Bourbigot, Sophie Duquesne, Zakia Sébih, Sébastien Ségura, René Delobel, Jing Zhang, William H. Starnes, Kelvin K. Shen, Eric Olson, L. J. Russell, D. C. O. Marney, V. P. Dowling, Dennis Price, L. K. Cunliffe, K. J. Bullett (formally Pyrah), T. R. Hull, G. J. Milnes, J. R. Ebdon, B. J. Hunt, P. Joseph, Xiaodong Wang, Sergei V. Levchik, Edward D, Gordon L. Nelson, Charles A. Wilkie, Xiaoxia Zheng, Grace Chigwada, Marius Costache, Bok Nam Jang, Jinguo Zhang, G. Camino, G. Tartaglione, A. Frache, C. Manferti, P. Finocchiaro, L. Falqui, A. Laachachi, M. Cochez, M. Ferriol, E. Leroy, J. M. Lopez Cuesta, Alexander B. Morgan, Paul D. Whaley, Thomas S. Lin, Jeffrey M. Cogen, Marco Zanetti, Simona Valesella, Maria Paola Luda, Luigi Costa, S. Duquesne, J. Lefebvre, S. Bourbigot, R. Delobel, P. Recourt, David D. Jiang, Gy. Marosi, S. Keszei, Sz. Matkó, Gy. Bertalan, Everson Kandare, Daniel Hall, Jeanne M. Hossenlopp, Feng Yang, Ria Yngard, Aliea Hernberg, B. K. Kandola, S. Nazaré, A. R. Horrocks, P. Myler, Jianqi Wang, Zhidong Han, Usman Sorathia, Ignacio Perez, Serge Bourbigot, Sophie Duquesne, Zakia Sébih, Sébastien Ségura, René Delobel, Jing Zhang, William H. Starnes, Kelvin K. Shen, Eric Olson, L. J. Russell, D. C. O. Marney, V. P. Dowling, Dennis Price, L. K. Cunliffe, K. J. Bullett (formally Pyrah), T. R. Hull, G. J. Milnes, J. R. Ebdon, B. J. Hunt, P. Joseph, Xiaodong Wang, Sergei V. Levchik, and Edward D

Subjects
Polymers--Fire testing--Congresses, Fire resistant polymers--Congresses
Published
2005

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