Period-doubling and chaotic oscillations in the ferroin-catalyzed Belousov-Zhabotinsky reaction in a CSTR  

作　　者：ZONG ChunYan GAO QingYu WANG YuMei FENG JiaMin MAO ShanCheng ZHANG Lu 

机构地区：[1]School of Chemical Engineering,China University of Mining and Technology,Xuzhou 221008,China

出　　处：《Science China Chemistry》2007年第2期205-211,共7页中国科学（化学英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 20573134) ;the Program for New Century Excellent Talents in Chinese Univer-sity (Grant No. NCET-05-0477)

摘　　要：The ferroin-catalyzed Belousov-Zhabotinsky(BZ) reaction,the oxidation of malonic acid by acidic bromate,is the most commonly investigated chemical system for understanding spatial pattern forma-tion. Various oscillatory behaviors were found from such as mixed-mode and simple period-doubling oscillations and chaos on both Pt electrode and Br-ISE at high flow rates to mixed-mode oscillations on Br-ISE only at low flow rates. The complex dynamic behaviors were qualitatively reproduced with a two-cycle coupling model proposed initially by Gy?rgyi and Field. This investigation offered a proper medium for studying pattern formation under complex temporal dynamics. In addition,it also shows that complex oscillations and chaos in the BZ reaction can be extended to other bromate-driven nonlinear reaction systems with different metal catalysts.The ferroin-catalyzed Belousov-Zhabotinsky (BZ) reaction, the oxidation of malonic acid by acidic bromate, is the most commonly investigated chemical system for understanding spatial pattern formation. Various oscillatory behaviors were found from such as mixed-mode and simple period-doubling oscillations and chaos on both Pt electrode and Br-ISE at high flow rates to mixed-mode oscillations on Br-ISE only at low flow rates. The complex dynamic behaviors were qualitatively reproduced with a two-cycle coupling model proposed initially by Gy?rgyi and Field. This investigation offered a proper medium for studying pattern formation under complex temporal dynamics. In addition, it also shows that complex oscillations and chaos in the BZ reaction can be extended to other bromate-driven nonlinear reaction systems with different metal catalysts.

关 键 词：Belousov-Zhabotinsky reaction PERIOD-DOUBLING OSCILLATIONS numerical simulation 

分 类 号：O643.36[理学—物理化学]