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Enhancement of sonochemical reaction of terephthalate ion by superposition of ultrasonic fields of various frequencies |
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| Authors: | Yasuda Keiji Torii Tatsuya Yasui Kyuichi Iida Yasuo Tuziuti Toru Nakamura Masaaki Asakura Yoshiyuki |
| Institution: | aDepartment of Chemical Engineering, Graduate School of Engineering, Nagoya University, Furocho, Chikusaku, Nagoya 464-8603, Japan bNational Institute of Advanced Industrial Science and Technology (AIST), Shimoshidami, Moriyamaku, Nagoya 463-8560, Japan cDepartment of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Furocho, Chikusaku, Nagoya 464-8603, Japan dHonda Electronics Co., Ltd., 20 Oyamazuka, Oiwacho, Toyohashi 441-3193, Japan |
| Abstract: | The ultrasonic reactor with dual frequency was used and the effect of frequency on the fluorescence intensity of terephthalate ion was experimentally investigated in the frequency range from 176 to 635 kHz. The sonochemical reaction fields were visualized by using sonochemical luminescence of luminol solution. Compared with the fluorescence intensity of terephthalate ion for single frequency, the fluorescence intensity for dual frequency increased. The fluorescence intensity ratio of dual frequency to single frequency had maximum value when the frequency of transducer attached at the bottom wall was comparable in magnitude to that at the side wall. In the case of dual frequency, the sonochemical reaction fields became more extensive in the reactor and more intensive around the center of the reactor. |
| Keywords: | Dual frequency Terephthalate ion Standing wave Luminol Synergy effect |
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