Niu Lidan, Zhou Lijuan, Wang Qihui, Yang Wenjing
Key Laboratory of Condiment Supervision Technology, State Administration for Market Regulation, Chongqing Institute for Food and Drug Control, Chongqing 400713, China.
School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China.
Molecules. 2025 Jul 31;30(15):3210. doi: 10.3390/molecules30153210.
This work investigated the mechanistic role of chloride ions (Cl) in the Belousov-Zhabotinsky (B-Z) oscillating reaction. We conducted a multivariate statistical analysis of the B-Z response, established a quadratic polynomial regression model, and determined the contributions of the experimental parameters to the induction time. The results indicate that the relationship between the experimental parameters and the induction time is often nonmonotonic, exhibiting secondary dependence. Then, we studied the influence mechanism by which Cl affects the B-Z reaction system. Both experimental and theoretical studies indicate that as the concentration of Cl increases, the system becomes more active as the activation energy increases. When the Cl concentration is less than 1 mmol/L, the induced apparent activation energy remains relatively constant. However, as the Cl concentration increases from 1.00 mmol/L to 2.00 mmol/L, the induced apparent activation energy increases rapidly from 50 kJ/mol to 120 kJ/mol, which severely hinders the induction period and then increases the induction time.
这项工作研究了氯离子（Cl）在Belousov-Zhabotinsky（B-Z）振荡反应中的作用机制。我们对B-Z反应进行了多变量统计分析，建立了二次多项式回归模型，并确定了实验参数对诱导时间的贡献。结果表明，实验参数与诱导时间之间的关系通常是非单调的，呈现出二次依赖性。然后，我们研究了Cl影响B-Z反应体系的作用机制。实验和理论研究均表明，随着Cl浓度的增加，系统因活化能增加而变得更加活跃。当Cl浓度小于1 mmol/L时，诱导表观活化能保持相对恒定。然而，当Cl浓度从1.00 mmol/L增加到2.00 mmol/L时，诱导表观活化能从50 kJ/mol迅速增加到120 kJ/mol，这严重阻碍了诱导期，进而增加了诱导时间。
