کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1891902 | 1043931 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Decomposition of halophenols in room-temperature ionic liquids by ionizing radiation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
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چکیده انگلیسی
In this article, we report the reaction of halophenols with solvated electrons in room-temperature ionic liquids (RTILs) initiated by γ-ray and pulsed electron radiolyses. The decomposition G-values of ortho-chlorophenol (CP) in N-methyl-N-propylpyrrolidinium-bis(trifluoromethanesulfonyl)imide (TFSI), N-butyl-N-methylpyrrolidinium-TFSI and N-methyl-N-propylpiperidinium-TFSI were estimated to be 1.4, 1.6, and 1.7 molecules 10â2 eVâ1 under γ-ray irradiation; these values were almost the same as the yield of solvated electron formation. The second-order rate constant for the reaction of CP with solvated electrons in diethylmethyl(2-methoxyethyl)ammonium (DEMMA)-tetrafluoroborate (BF4) was one order of magnitude lower than that in DEMMA-TFSI although the G-values of CP decomposition and phenol formation in DEMMA-BF4 were higher. The decomposition yield of ortho-iodophenol in DEMMA-TFSI was slightly higher than that of the other halophenol (ortho-fluorophenol, CP, and ortho-bromophenol), and the formation yield of phenol for the decomposition of only ortho-fluorophenol was lower.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Physics and Chemistry - Volume 79, Issue 11, November 2010, Pages 1159-1164
Journal: Radiation Physics and Chemistry - Volume 79, Issue 11, November 2010, Pages 1159-1164
نویسندگان
Atsushi Kimura, Mitsumasa Taguchi, Takafumi Kondoh, Jinfeng Yang, Ryuji Nagaishi, Yoichi Yoshida, Koichi Hirota,