کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5144927 | 1379189 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Identification of active sonochemical zones in a triple frequency ultrasonic reactor via physical and chemical characterization techniques
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Identification of active sonochemical zones in a triple frequency ultrasonic reactor via physical and chemical characterization techniques Identification of active sonochemical zones in a triple frequency ultrasonic reactor via physical and chemical characterization techniques](/preview/png/5144927.png)
چکیده انگلیسی
Coupling multiple frequencies in ultrasonic systems is one of the highly desired area of research for sonochemists, as it is known for producing synergistic effects on various ultrasonic reactions. In this study, the characteristics of a hexagonal-shaped triple frequency ultrasonic reactor with the combination frequencies of 28, 40 and 70Â kHz were studied. The results showed that uniform temperature increment was achieved throughout the reactor at all frequency combinations. On the other hand, sonochemiluminescence emission and degradation rate of Rhodamine B varies throughout different areas of the reactor, indicating the presence of acoustic 'hot spots' at certain areas of the reactor. Also, coupling dual and triple frequencies showed a decrease in the hydroxyl radical (OH) production, suggesting probable wave cancelling effect in the system. The results can therefore be served as a guide to optimize the usage of a triple frequency ultrasonic reactor for future applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 35, Part B, March 2017, Pages 569-576
Journal: Ultrasonics Sonochemistry - Volume 35, Part B, March 2017, Pages 569-576
نویسندگان
T. Joyce Tiong, Derick K.L. Liew, Ramona C. Gondipon, Ryan W. Wong, Yuen Ling Loo, Matthew S.T. Lok, Sivakumar Manickam,