Изучение методом ЭПР реакции химического переноса

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êè
1, 2007
Åñòåñòâåííûå íàó-
ɏɢɦ ɢɹ
ɍȾɄ 541.128.34 + 661.491
Ⱥ. Ⱥ. ȻȿȽɅȺɊəɇ
ɂɁɍɑȿɇɂȿ ɆȿɌɈȾɈɆ ɗɉɊ ɊȿȺɄɐɂɂ ɏɂɆɂɑȿɋɄɈȽɈ ɉȿɊȿɇɈɋȺ
ZnO ɉȿɊɈɄɋɂȾɈɆ ȼɈȾɈɊɈȾȺ
Ɇɟɬɨɞɨɦ ɗɉɊ ɢɡɭɱɟɧ ɩɪɨɰɟɫɫ ɯɢɦɢɱɟɫɤɨɝɨ ɩɟɪɟɧɨɫɚ ɨɤɫɢɞɚ ɰɢɧɤɚ
ɩɟɪɨɤɫɢɞɨɦ ɜɨɞɨɪɨɞɚ. ɉɨɤɚɡɚɧɨ, ɱɬɨ ɷɬɨɬ ɩɪɨɰɟɫɫ ɧɚɛɥɸɞɚɟɬɫɹ ɧɚɱɢɧɚɹ ɫ
273 K, ɩɪɢ ɷɬɨɦ ɨɛɪɚɡɭɸɬɫɹ ɩɪɨɦɟɠɭɬɨɱɧɨɟ ɦɨɥɟɤɭɥɹɪɧɨɟ ɫɨɟɞɢɧɟɧɢɟ ɢ
ɫɜɨɛɨɞɧɵɟ ɝɢɞɪɨɩɟɪɨɤɫɢɞɧɵɟ ɪɚɞɢɤɚɥɵ.
Ɋɟɚɤɰɢɹ ɯɢɦɢɱɟɫɤɨɝɨ ɩɟɪɟɧɨɫɚ ZnO ɫ ɩɨɦɨɳɶɸ ɩɟɪɨɤɫɢɞɚ ɜɨɞɨɪɨɞɚ ɜ
ɨɫɧɨɜɧɨɦ ɢɡɭɱɚɥɚɫɶ ɧɚ ɭɪɨɜɧɟ ɤɢɧɟɬɢɱɟɫɤɢɯ ɡɚɤɨɧɨɦɟɪɧɨɫɬɟɣ ɨɛɪɚɡɨɜɚɧɢɹ
ɦɨɥɟɤɭɥɹɪɧɵɯ ɫɨɟɞɢɧɟɧɢɣ [1, 2]. ȼ ɧɚɫɬɨɹɳɟɣ ɪɚɛɨɬɟ ɛɵɥɚ ɩɨɫɬɚɜɥɟɧɚ ɡɚɞɚɱɚ
ɦɟɬɨɞɨɦ ɗɉɊ ɢɡɭɱɢɬɶ ɜɨɡɦɨɠɧɨɫɬɶ ɨɛɪɚɡɨɜɚɧɢɹ ɫɜɨɛɨɞɧɵɯ ɪɚɞɢɤɚɥɨɜ ɜ
ɞɚɧɧɨɦ ɩɪɨɰɟɫɫɟ.
Ɇɟ ɬɨɞɢɤɚ ɷɤɫɩɟ ɪɢɦɟ ɧɬɚ ɢ ɨɛɫɭɠɞɟ ɧɢɟ ɪɟ ɡɭɥɶɬɚɬɨɜ. ɂɫɫɥɟɞɨɜɚɧɢɹ
ɩɪɨɜɨɞɢɥɢɫɶ ɜ ɩɪɨɬɨɱɧɵɯ ɭɫɥɨɜɢɹɯ ɫ ɩɨɦɨɳɶɸ ɫɬɟɤɥɹɧɧɨɣ ɜɚɤɭɭɦɧɨɣ ɭɫɬɚɧɨɜɤɢ, ɨɩɢɫɚɧɧɨɣ ɜ ɪɚɛɨɬɟ [1]. Ɋɟɚɤɬɨɪ, ɭɡɥɵ ɜɵɦɨɪɚɠɢɜɚɧɢɹ ɪɚɞɢɤɚɥɨɜ ɢ
N2
4
ɦɨɥɟɤɭɥɹɪɧɵɯ ɩɪɨɞɭɤɬɨɜ ɫɯɟɦɚɬɢɱɟɫɤɢ ɩɪɟɞɫɬɚɜɥɟɧɵ ɧɚ ɪɢɫ. 1.
ɂɫɬɨɱɧɢɤɨɦ ɩɚɪɨɜ H2O2 ɫɥɭɠɢɥ
~90%-ɣ ɜɨɞɧɵɣ ɪɚɫɬɜɨɪ ɩɟɪɨɤɫɢɞɚ
ɦɚɪɤɢ ɨɫ.ɱ., ɤɨɬɨɪɵɣ ɜ ɯɨɞɟ ɷɤɫɩɟɪɢɦɟɧɬɚ ɬɟɪɦɨɫɬɚɬɢɪɨɜɚɥɫɹ ɩɪɢ ɬɟɦɩɟɪɚɬɭɪɟ
273 K, ɱɬɨ ɨɛɟɫɩɟɱɢɜɚɥɨ ɫɬɚɛɢɥɶ2
3
1
ɧɭɸ ɩɨɞɚɱɭ ɩɚɪɨɜ ɩɟɪɨɤɫɢɞɚ ɜɨɞɨɪɨɞɚ
ɜ ɪɟɚɤɬɨɪ. ȼ ɤɚɱɟɫɬɜɟ ɨɛɴɟɤɬɚ ɢɫɫɥɟɞɨɜɚɧɢɹ ɛɵɥ ɜɵɛɪɚɧ 99,999%-ɣ ɨɤɫɢɞ
ɰɢɧɤɚ (ɩɪɨɢɡɜɨɞɫɬɜɚ ɤɨɦɩɚɧɢɢ «Ald5
rich»), ɤɨɬɨɪɵɣ ɧɚɧɨɫɢɥɫɹ ɧɚ ɩɨɦɟɳɟɧɧɭɸ ɜ ɪɟɚɤɬɨɪ ɬɪɭɛɤɭ ɩɥɨɳɚɞɶɸ
Ɋɢɫ. 1. 1 – Ɋɟɚɤɬɨɪ ɫ ɨɛɪɚɡɰɨɦ ZnO; 2 – ɭɡɟɥ ~12,5 ɫɦ2. Ɉɛɴɟɦ ɪɟɚɤɬɨɪɚ ~1 ɫɦ3, ɞɚɜɪɚɡɞɟɥɟɧɢɹ ɩɨɬɨɤɚ; 3 – ɧɚɤɨɩɢɬɟɥɶ ɦɨɥɟɤɭɥɟɧɢɟ ɩɚɪɨɜ H2O2+H2O ɜ ɪɟɚɤɬɨɪɟ ɩɪɢɥɹɪɧɵɯ ɩɪɨɞɭɤɬɨɜ ɪɟɚɤɰɢɢ; 4 – ɭɡɟɥ ɜɵɦɨɪɚɦɟɪɧɨ
13,3 ɉɚ .
ɠɢɜɚɧɢɹ ɪɚɞɢɤɚɥɨɜ; 5 – ɫɨɫɭɞɵ Ⱦɶɸɚɪɚ.
149
ɉɚɪɵ H2O2 ɜɡɚɢɦɨɞɟɣɫɬɜɭɸɬ ɫ ZnO ɜ ɪɟɚɤɬɨɪɟ 1, ɨɬɤɭɞɚ ɱɟɪɟɡ ɭɡɟɥ 2
ɝɚɡɨɜɵɣ ɩɨɬɨɤ ɧɚɩɪɚɜɥɹɟɬɫɹ ɥɢɛɨ ɜ U-ɨɛɪɚɡɧɭɸ ɬɪɭɛɤɭ 3, ɥɢɛɨ ɜ ɭɡɟɥ 4,
ɩɪɟɞɧɚɡɧɚɱɟɧɧɵɟ ɞɥɹ ɧɚɤɨɩɥɟɧɢɹ ɦɨɥɟɤɭɥɹɪɧɵɯ ɩɪɨɞɭɤɬɨɜ ɢ ɪɚɞɢɤɚɥɨɜ
ɫɨɨɬɜɟɬɫɬɜɟɧɧɨ (ɪɢɫ. 1). ɍɡɥɵ 3 ɢ 4 ɧɚɯɨɞɹɬɫɹ ɩɪɢ ɬɟɦɩɟɪɚɬɭɪɟ 77 K.
ɇɚɲɢ ɩɪɟɞɵɞɭɳɢɟ ɢɫɫɥɟɞɨɜɚɧɢɹ ɩɨɤɚɡɚɥɢ, ɱɬɨ ɯɢɦɢɱɟɫɤɢɣ ɩɟɪɟɧɨɫ
ɨɤɫɢɞɚ ɰɢɧɤɚ ɨɫɭɳɟɫɬɜɥɹɟɬɫɹ ɩɨɫɪɟɞɫɬɜɨɦ ɩɪɨɦɟɠɭɬɨɱɧɨɝɨ ɫɨɟɞɢɧɟɧɢɹ, ɹɜɥɹɸɳɟɝɨɫɹ ɩɟɪɨɤɫɨɫɨɥɶɜɚɬɨɦ ɨɤɫɢɞɚ ɰɢɧɤɚ (ZnO˜H2O2). Ʉɨɧɰɟɧɬɪɚɰɢɸ ɩɟɪɨɤɫɨɫɨɥɶɜɚɬɚ ɜ ɝɚɡɨɜɨɣ ɮɚɡɟ ɨɩɪɟɞɟɥɹɥɢ ɤɨɫɜɟɧɧɨ ɫɥɟɞɭɸɳɢɦ ɨɛɪɚɡɨɦ: ɧɚɤɨɩɢɜɲɢɣɫɹ ɜ ɭɡɥɟ 3 ɩɟɪɨɤɫɨɫɨɥɶɜɚɬ ɫ ɩɨɦɨɳɶɸ ɫɨɥɹɧɨɣ ɤɢɫɥɨɬɵ ɩɪɟɜɪɚɳɚɥɢ
ɜ ɪɚɫɬɜɨɪɢɦɭɸ ɜ ɜɨɞɟ ɫɨɥɶ (ZnCl2) ɩɨ ɪɟɚɤɰɢɢ
2ZnO˜H2O2+4HClĺ2ZnCl2+ +4H2O+O2.
Ɂɚɬɟɦ ɫ ɩɨɦɨɳɶɸ ɚɬɨɦɧɨ-ɚɛɫɨɪɛɰɢɨɧɧɨɝɨ ɫɩɟɤɬɪɨɦɟɬɪɚ AAS30 (ɩɪɟɞɟɥ ɨɛɧɚɪɭɠɟɧɢɹ ɰɢɧɤɚ ~3 ˜10 -8 ɦɨɥɶ/ɥ) ɨɩɪɟɞɟɥɹɥɢ ɤɨɥɢɱɟɫɬɜɨ ɰɢɧɤɚ ɜ ɩɨɥɭɱɟɧɧɨɦ ɪɚɫɬɜɨɪɟ, ɫɥɟɞɨɜɚɬɟɥɶɧɨ, ɢ ɤɨɥɢɱɟɫɬɜɨ ɩɟɪɟɧɟɫɟɧɧɨɝɨ ɜ ɯɨɞɟ ɷɤɫɩɟɪɢɦɟɧɬɚ ɜɟɳɟɫɬɜɚ. ɉɨɫɥɟ ɷɬɨɝɨ, ɡɧɚɹ ɫɤɨɪɨɫɬɶ ɢ ɞɚɜɥɟɧɢɟ ɪɟɚɤɰɢɨɧɧɨɝɨ ɩɨɬɨɤɚ, ɪɚɫɫɱɢɬɵɜɚɥɢ ɤɨɧɰɟɧɬɪɚɰɢɸ ɩɟɪɨɤɫɨɫɨɥɶɜɚɬɚ ɜ ɝɚɡɨɜɨɣ ɮɚɡɟ. ȼ ɧɚɲɢɯ
ɭɫɥɨɜɢɹɯ ɨɧɚ ɫɨɫɬɚɜɥɹɥɚ ɩɪɢɦɟɪɧɨ 2 ˜1010 ɱɚɫɬɢɰ/ɫɦ3.
Ɍ ɚɤɚɹ ɩɪɨɰɟɞɭɪɚ ɨɩɪɟɞɟɥɟɧɢɹ ɤɨɧɰɟɧɬɪɚɰɢɢ ɩɨɡɜɨɥɢɥɚ ɢɡɭɱɢɬɶ ɡɚɤɨɧɨɦɟɪɧɨɫɬɢ ɧɚɤɨɩɥɟɧɢɹ ɩɟɪɨɤɫɨɫɨɥɶɜɚɬɚ ɜ ɝɚɡɨɜɨɣ ɮɚɡɟ ɧɚɞ ɩɨɜɟɪɯɧɨɫɬɶɸ ZnO.
Ɉɛɧɚɪɭɠɟɧɨ, ɱɬɨ ɩɪɨɰɟɫɫ ɩɟɪɟɧɨɫɚ ZnO ɜ ɭɫɥɨɜɢɹɯ ɧɚɲɟɝɨ ɷɤɫɩɟɪɢɦɟɧɬɚ
ɩɪɨɢɫɯɨɞɢɬ ɧɚɱɢɧɚɹ ɫ 273 K. Ɇɚɤɫɢɦɚɥɶɧɚɹ ɫɤɨɪɨɫɬɶ ɩɟɪɟɧɨɫɚ ɧɚɛɥɸɞɚɟɬɫɹ
ɩɪɢ ɬɟɦɩɟɪɚɬɭɪɟ 283 K ɢ ɜɪɟɦɟɧɢ ɤɨɧɬɚɤɬɚ ~1 ˜10 -2 ɫ.
ɋ ɰɟɥɶɸ ɢɡɭɱɟɧɢɹ ɩɪɨɰɟɫɫɚ ɧɚ ɪɚɞɢɤɚɥɶɧɨɦ ɭɪɨɜɧɟ ɜ ɨɩɢɫɚɧɧɵɯ ɜɵɲɟ
ɭɫɥɨɜɢɹɯ ɛɵɥ ɩɪɢɦɟɧɟɧ ɤɢɧɟɬɢɱɟɫɤɢɣ ɦɟɬɨɞ ɜɵɦɨɪɚɠɢɜɚɧɢɹ ɢ ɧɚɤɨɩɥɟɧɢɹ
ɪɚɞɢɤɚɥɨɜ [3]. Ȼɵɥ ɢɫɩɨɥɶɡɨɜɚɧ
ɫɴɟɦɧɵɣ ɜɚɪɢɚɧɬ ɭɡɥɚ ɧɚɤɨɩɥɟɧɢɹ ɪɚɞɢɤɚɥɨɜ [4], ɤɨɬɨɪɵɣ ɩɨɡɜɨɥɹɥ ɜɟɫɬɢ ɧɚɤɨɩɥɟɧɢɟ ɜɧɟ ɫɩɟɤɬɪɨɦɟɬɪɚ ɗɉɊ.
ȼ ɯɨɞɟ ɷɤɫɩɟɪɢɦɟɧɬɚ ɝɚɡɨɜɵɣ ɩɨɬɨɤ ɩɨɫɥɟ ɪɟɚɤɬɨɪɚ 1 ɫ
ɩɨɦɨɳɶɸ ɭɡɥɚ 2 ɧɚɩɪɚɜɥɹɥɢ ɧɚ
ɩɚɥɶɰɟɨɛɪɚɡɧɵɣ ɨɬɪɨɫɬɨɤ ɫɨɫɭɞɚ
Ⱦɶɸɚɪɚ 4, ɡɚɩɨɥɧɟɧɧɵɣ ɠɢɞɤɢɦ
ɚɡɨɬɨɦ. ɉɨɫɥɟ ɩɪɟɤɪɚɳɟɧɢɹ ɨɩɵɬɚ ɭɡɟɥ ɜɵɦɨɪɚɠɢɜɚɧɢɹ ɨɬɞɟɥɹɥɢ
ɨɬ ɫɢɫɬɟɦɵ, ɭɫɬɚɧɚɜɥɢɜɚɥɢ ɜ ɪɟȽɫ ɡɨɧɚɬɨɪ ɪɚɞɢɨɫɩɟɤɬɪɨɦɟɬɪɚ ɗɉɊ
(ɮɢɪɦɵ «Radiopan» (ɉɨɥɶɲɚ) ɫ
ɱɚɫɬɨɬɨɣ
9,4 ȽȽɰ ɢ ɜɵɫɨɤɨɱɚɫɬɨɬɊɢɫ. 2. ɋɩɟɤɬɪ ɗɉɊ ɜɵɦɨɪɨɠɟɧɧɵɯ ɪɚɞɢɤɚɥɨɜ, ɨɛɪɚɡɭɸɳɢɯɫɹ ɩɪɢ ɜɡɚɢɦɨɞɟɣɫɬɜɢɢ ZnO c ɩɟɪɨɤɫɢ- ɧɨɣ ɦɨɞɭɥɹɰɢɟɣ 100 ɤȽɰ ) ɢ ɩɪɨɞɨɦ ɜɨɞɨɪɨɞɚ.
ɢɡɜɨɞɢɥɢ ɢɡɦɟɪɟɧɢɟ. Ɂɚ ɞɜɚɞɰɚɬɶ
ɦɢɧɭɬ ɤɨɧɞɟɧɫɚɰɢɢ ɝɚɡɨɜɨɝɨ ɩɨɬɨɤɚ ɜ ɷɬɢɯ ɭɫɥɨɜɢɹɯ ɧɚɤɚɩɥɢɜɚɥɨɫɶ ɞɨɫɬɚɬɨɱɧɨɟ ɞɥɹ ɚɧɚɥɢɡɚ ɤɨɥɢɱɟɫɬɜɨ ɪɚɞɢɤɚɥɨɜ.
ɋɢɝɧɚɥ ɗɉɊ ɜɵɦɨɪɨɠɟɧɧɵɯ ɩɚɪɚɦɚɝɧɢɬɧɵɯ ɱɚɫɬɢɰ ɩɪɟɞɫɬɚɜɥɟɧ ɧɚ
150
ɪɢɫ. 2. Ɍɚɤɨɣ ɫɥɨɠɧɵɣ ɫɢɝɧɚɥ ɜ ɪɟɚɤɰɢɹɯ ɯɢɦɢɱɟɫɤɨɝɨ ɩɟɪɟɧɨɫɚ ɫɨɟɞɢɧɟɧɢɣ
ɩɨɥɭɱɟɧ ɜɩɟɪɜɵɟ. ɐɟɧɬɪɚɥɶɧɚɹ ɱɚɫɬɶ ɫɩɟɤɬɪɚ ɫɨɨɬɜɟɬɫɬɜɭɟɬ ɫɢɝɧɚɥɭ ɗɉɊ
ɫɜɨɛɨɞɧɵɯ ɪɚɞɢɤɚɥɨɜ HO2, ɧɚɯɨɞɹɳɢɯɫɹ ɜ ɩɨɥɹɪɧɨɣ ɦɚɬɪɢɰɟ [5]. Ⱥ ɱɬɨ ɢɡ
ɫɟɛɹ ɩɪɟɞɫɬɚɜɥɹɸɬ ɛɨɤɨɜɵɟ ɪɚɫɳɟɩɥɟɧɢɹ ɫɩɟɤɬɪɚ – ɨɬɜɟɬɢɬɶ ɧɚ ɷɬɨɬ ɜɨɩɪɨɫ
ɩɨ ɩɨɥɭɱɟɧɧɵɦ ɞɚɧɧɵɦ ɬɪɭɞɧɨ. ɇɟ ɢɫɤɥɸɱɟɧɚ ɜɨɡɦɨɠɧɨɫɬɶ ɨɛɪɚɡɨɜɚɧɢɹ
ɪɚɞɢɤɚɥɶɧɵɯ ɚɫɫɨɰɢɚɬɨɜ ɫ ɦɨɥɟɤɭɥɹɪɧɵɦɢ ɫɨɟɞɢɧɟɧɢɹɦɢ (ɜɨɞɚ, ɩɟɪɨɤɫɢɞ
ɜɨɞɨɪɨɞɚ, ɩɟɪɨɤɫɨɫɨɥɶɜɚɬ). Ɍ ɚɤɚɹ ɜɨɡɦɨɠɧɨɫɬɶ ɧɚ ɩɪɢɦɟɪɟ ɪɚɞɢɤɚɥɨɜ HO2 ɢ
ɜɨɞɵ ɩɨɤɚɡɚɧɚ ɜ ɪɚɛɨɬɚɯ [6, 7].
ɋ ɩɨɦɨɳɶɸ ɗɉɊ-ɫɢɝɧɚɥɚ ɷɬɚɥɨɧɧɨɝɨ ɜɟɳɟɫɬɜɚ ɨɩɪɟɞɟɥɹɥɢ ɤɨɥɢɱɟɫɬɜɨ
ɜɵɦɨɪɨɠɟɧɧɵɯ ɪɚɞɢɤɚɥɨɜ HO2, ɚ ɡɚɬɟɦ ɢ ɢɯ ɤɨɧɰɟɧɬɪɚɰɢɸ ɜ ɝɚɡɨɜɨɣ ɮɚɡɟ.
Ɉɧɚ ɩɨɥɭɱɚɟɬɫɹ ɩɪɢɦɟɪɧɨ 1 ˜1010 ɱɚɫɬɢɰ/ɫɦ 3.
Ȼɵɥɚ ɢɫɫɥɟɞɨɜɚɧɚ ɬɚɤɠɟ ɯɢɦɢɱɟɫɤɚɹ ɚɤɬɢɜɧɨɫɬɶ ɤɨɧɞɟɧɫɚɬɚ ɩɪɢ
ɪɚɡɥɢɱɧɵɯ ɬɟɦɩɟɪɚɬɭɪɚɯ. ȼ ɩɟɪɜɨɣ ɫɟɪɢɢ ɨɩɵɬɨɜ ɩɨɫɥɟ ɪɟɝɢɫɬɪɚɰɢɢ ɫɢɝɧɚɥɚ
ɗɉɊ ɬɟɦɩɟɪɚɬɭɪɭ ɤɨɧɞɟɧɫɚɬɚ ɩɨɞɧɢɦɚɥɢ ɞɨ 100 K ɢ ɡɚɬɟɦ, ɱɟɪɟɡ a3 ɦɢɧɭɬɵ,
ɩɨɧɢɠɚɹ ɬɟɦɩɟɪɚɬɭɪɭ ɞɨ ɩɪɟɠɧɟɝɨ ɡɧɚɱɟɧɢɹ (77 K), ɫɧɨɜɚ ɩɪɨɢɡɜɨɞɢɥɢ ɢɡɦɟɪɟɧɢɟ. ɉɨɫɥɟ ɬɚɤɨɣ ɩɪɨɰɟɞɭɪɵ ɧɢɤɚɤɨɣ ɫɢɝɧɚɥ ɗɉɊ ɧɟ ɛɵɥ ɡɚɩɢɫɚɧ, ɬ.ɟ.
ɡɚɪɟɝɢɫɬɪɢɪɨɜɚɧɧɵɟ ɩɪɢ 77 K ɩɚɪɚɦɚɝɧɢɬɧɵɟ ɱɚɫɬɢɰɵ ɨɛɥɚɞɚɸɬ ɨɩɪɟɞɟɥɟɧɧɨɣ ɥɚɛɢɥɶɧɨɫɬɶɸ ɢ ɭɠɟ ɩɪɢ 100 K ɪɟɤɨɦɛɢɧɢɪɭɸɬ ɩɨɥɧɨɫɬɶɸ. ɑɬɨ ɤɚɫɚɟɬɫɹ
ɩɪɨɦɟɠɭɬɨɱɧɨɝɨ ɫɨɟɞɢɧɟɧɢɹ (ɩɟɪɨɤɫɨɫɨɥɶɜɚɬɚ), ɬɨ ɨɧɨ ɫɨɯɪɚɧɹɟɬ ɫɜɨɸ ɢɧɞɢɜɢɞɭɚɥɶɧɨɫɬɶ ɧɟ ɬɨɥɶɤɨ ɩɪɢ 100 K, ɧɨ ɢ ɩɪɢ ɝɨɪɚɡɞɨ ɛɨɥɟɟ ɜɵɫɨɤɢɯ (ɞɨ 300 K)
ɬɟɦɩɟɪɚɬɭɪɚɯ.
Ɍ ɚɤɢɦ ɨɛɪɚɡɨɦ, ɜ ɩɪɨɰɟɫɫɟ ɯɢɦɢɱɟɫɤɨɝɨ ɩɟɪɟɧɨɫɚ ZnO ɨɛɪɚɡɭɸɬɫɹ
ɫɜɨɛɨɞɧɵɟ ɪɚɞɢɤɚɥɵ, ɫɩɟɤɬɪ ɗɉɊ ɤɨɬɨɪɵɯ, ɤɪɨɦɟ ɫɢɝɧɚɥɚ ɫɜɨɛɨɞɧɵɯ
ɪɚɞɢɤɚɥɨɜ HO2 (ɰɟɧɬɪɚɥɶɧɚɹ ɱɚɫɬɶ ɫɩɟɤɬɪɚ), ɢɦɟɟɬ ɟɳɟ ɞɜɚ ɞɨɩɨɥɧɢɬɟɥɶɧɵɯ
ɫɢɝɧɚɥɚ, ɤɨɬɨɪɵɟ ɦɨɠɧɨ ɩɪɢɩɢɫɚɬɶ ɪɚɞɢɤɚɥɶɧɵɦ ɚɫɫɨɰɢɚɬɚɦ. Ⱦɥɹ ɜɵɹɫɧɟɧɢɹ
ɷɬɨɝɨ ɜɨɩɪɨɫɚ ɬɪɟɛɭɸɬɫɹ ɞɚɥɶɧɟɣɲɢɟ ɢɫɫɥɟɞɨɜɚɧɢɹ.
Ɋɚɛɨɬɚ ɜɵɩɨɥɧɟɧɚ ɩɪɢ ɮɢɧɚɧɫɨɜɨɣ ɩɨɞɞɟɪɠɤɟ ɆɇɌɐ (ɩɪɨɟɤɬ Ⱥ–629).
Ʉɚɮɟɞɪɚ ɯɢɦɢɱɟɫɤɨɣ ɮɢɡɢɤɢ
06.06.2006
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ɬɟɯɧɨɥɨɝɢɢ ɢ ɭɩɪɚɜɥɟɧɢɟ, 2006, ʋ 1, ɫ. 152.
ɋɚɪɤɢɫɹɧ ɇ.ə., Ⱥɛɪɚɦɹɧ Ⱥ.ɇ., Ƚɪɢɝɨɪɹɧ Ƚ.Ʌ. í ɀɎɏ, 1990, ɬ. 64, ɫ. 2548.
ɇɚɥɛɚɧɞɹɧ Ⱥ.Ȼ., Ɇɚɧɬɚɲɹɧ Ⱥ.Ⱥ . ɗɥɟɦɟɧɬɚɪɧɵɟ ɩɪɨɰɟɫɫɵ ɜ ɦɟɞɥɟɧɧɵɯ ɝɚɡɨɮɚɡɧɵɯ
ɪɟɚɤɰɢɹɯ. ȿɪ.: ɂɡɞ-ɜɨ Ⱥɇ Ⱥɪɦ. ɋɋP, 1975.
G rigoryan G .L. í React. Kinet. Catal. Lett., 1984, v. 24, ʋ 3–4, p. 301.
ȼ ɚɪɬɢɤɹɧ Ʌ.Ⱥ., ɋɚɪɤɢɫɹɧ ɗ.Ƚ., Ƚɪɢɝɨɪɹɧ Ƚ.Ʌ. í Ʉɢɧɟɬɢɤɚ ɢ ɤɚɬɚɥɢɡ, 1980, ɬ. 21,
ɜɵɩ. 6, ɫ. 1385.
Aloisio S., Francisco J.S. – J. Phys. Chem., 1998, A 102, p. 1899.
B elair S.D., Kais S., Francisco J.S. – Molecular Physics, 2002, v. 100, p. 247.
151
Ð. ². ´º¶È²ðÚ²Ü
æð²ÌÜÆ äºðúøêÆ¸Æ ØÆæàòàì ZnO-Æ øÆØƲβÜ
îºÔ²öàÊàôÂÚ²Ü àôêàôØܲêÆðàôÂÚàôÜÀ ¾äè غÂà¸àì
² Ù÷á÷ áõÙ
¾äè Ù»Ãá¹áí áõëáõÙݳëÇñí»É ¿ ZnO-Ç ùÇÙÇ³Ï³Ý ï»Õ³÷áËáõÃÛáõÝÁ çñ³ÍÝÇ
å»ñûùëÇ¹Ç ÙÇçáóáí: òáõÛó ¿ ïñí»É, áñ ëÏë³ Í 273 Î ¹ÇïíáõÙ ¿ óÇÝÏÇ ûùëǹÇ
ï»Õ³÷áËáõÃÛáõÝ: ²Û¹ åñáó»ëáõÙ ³é³ç³ÝáõÙ »Ý ÙÇç³ÝÏÛ³É ÙáÉ»ÏáõɳÛÇÝ
ÙdzóáõÃÛáõÝ ¨ ³½³ï Ñǹñáå»ñûùëǹ³ÛÇÝ é³¹ÇϳÉÝ»ñ:
H. A. BEGLARYAN
INVESTIGATION OF ZnO CHEMICAL TRANSPORTATION REACTION
WITH HYDROGEN PEROXIDE BY ESR METHOD
S u m ma r y
Process of ZnO chemical transportatio n with hydrogen peroxid e has been
studied by ESR method. It has been shown, that beginning from 273 K the process
of zinc oxide transportation is observed. At the same time formation of intermediate
molecular compound and free hydroperoxide radicals takes pla ce.
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