The effects of metals and inhibitors on thermal oxidative degradation reactions of unbranched perfluoroalkyl ethers

The effects of metals and inhibitors on thermal oxidative degradation reactions of unbranched perfluoroalkyl ethers
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金属和抑制剂对无支链全氟烷基醚热氧化降解反应的影响

DOI:
10.1021/i300019a016
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发表时间:
1985
期刊:
Industrial & Engineering Chemistry Product Research and Development
影响因子:
--
通讯作者:
R. Kratzer
R. Kratzer
中科院分区:
--
文献类型:
--
作者:
W. R. Jones;K. Paciorek;D. Harris;M. Smythe;J. Nakahara;R. Kratzer

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在288℃下对无支链全氟烷基醚进行了热氧化降解研究。研究的金属和合金包括Ti、Al和Ti (4al, 4mn)。降解机理为断链。与Ti (4al, 4mn)相比,Ti和Al对降解的促进作用较小。所研究的两种抑制剂(一种全氟苯基膦和一种磷酸三嗪)将降解率降低了几个数量级。两种抑制剂的有效时间相同(75至100小时)。磷酸三嗪似乎提供了更多的表面保护。
Thermal oxidative degradation studies were performed on unbranched perfluoroalkylethers at 288 C in oxygen. Metals and alloys studied included Ti, Al, and Ti (4 Al, 4 Mn). The mechanism of degradation was by chain scission. Ti and Al promoted less degradation than Ti (4 Al, 4 Mn). The two inhibitors investigated (a perfluorophenyl phosphine and a phosphatriazine) reduced degradation rates by several orders of magnitude. Both inhibitors were effective for the same duration (75 to 100 hours). The phosphatriazine appeared to provide more surface protection.