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51.
Gesa Schfer Jelena Mili Adeeb Eldahshan Frank Gtz Kerstin Zühlke Christian Schillinger Annika Kreuchwig Jonathan M. Elkins Kamal R. AbdulAzeez Andreas Oder Marie C. Moutty Nanako Masada Monika Beerbaum Brigitte Schlegel Sylvia Niquet Peter Schmieder Gerd Krause Jens Peter vonKries Dermot M. F. Cooper Stefan Knapp Jrg Rademann Walter Rosenthal Enno Klussmann 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2013,125(46):12409-12413
52.
Koji Ishizu Kazuhide Ino Takashi Fukutomi Toshio Kakurai 《Journal of polymer science. Part A, Polymer chemistry》1982,20(9):2555-2564
Lithium-metallated styrene–p-benzylstyrene copolymer was reacted with the branched polymer with chlorine groups at the pendant chain ends (multifunctional branched polymer) in tetrahydrofuran (THF) at 25°C. The rate constant was estimated from the changes in the concentration of metallated polymer by using photometrical measurements. The various reaction conditions were chosen and it became clear that the rate constants of intermolecular (k20) and intramolecular (k3intra) crosslinkings were derived separately at the second stage. k20 showed a constant value in spite of the molecular weight of crosslinker chains and was about equal to the rate constant of the grafting. The rate of intramolecular crosslinking at the second stage increased with decreasing the molecular weight of pendant chains of multifunctional branched polymer. 相似文献
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Dr. Kojiro Fuku Honami Kanai Masanobu Todoroki Nanako Mishima Taisei Akagi Dr. Takashi Kamegawa Prof. Naoki Ikenaga 《化学:亚洲杂志》2021,16(14):1887-1892
Water pollution derived from organic pollutants is one of the global environmental problems. The Fenton reaction using Fe2+ as a homogeneous catalyst has been known as one of clean methods for oxidative degradation of organic pollutants. Here, a layered double hydroxide (Fe2+Al3+-LDH) containing Fe2+ and Al3+ in the structure was used to develop a “heterogeneous” Fenton catalyst capable of mineralizing organic pollutants. We found that sulfate ion (SO42−) immobilized on the Fe2+Al3+-LDH significantly facilitated oxidative degradation (mineralization) of phenol as a model compound of water pollutants to carbon dioxide (CO2) in a heterogeneous Fenton process. The phenol conversion and mineralization efficiency to CO2 reached >99% and ca. 50%, respectively, even with a reaction time of only 60 min. 相似文献
55.
Hiroshi Fukutomi Takeshi Yamamoto Kazushi Nonomura Kazuyoshi Takada 《Interface Science》1999,7(2):141-146
In order to understand the factors dominating grain boundary sliding, stress change tests and stress reversal tests were conducted on aluminum bicrystal specimens with high angle grain boundaries. It is found that small change in stress results in the remarkable change in the rate of grain boundary sliding. Stress reversal tests showed that grain boundary slide hardening does not work for the sliding to the direction opposite to that before the stress reversal. Mean internal stresses for the dislocations contributing to grain boundary sliding are experimentally measured by a method consisting of stress change and annealing. It is found that the velocity of dislocations in the grain boundary is in proportion to the mean effective stress. 相似文献
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