摘要
The reaction between chlorite and thiourea could display batch oligooscillation and CSTR oscillation of pH.Batch pH peak has the same character with pH oscillation in a CSTR.The oxidation of thiourea produced intermediates such as HOSC(NH)NH2,HO2SC(NH)NH2,HO3S(NH)NH2 and bisulfite.The valence change of sulfur has close relation with pH dynamics.Through the mechanistic analysis,a general model of sulfur(－ II) oxidation,which consists of negative hydrogen ion feedback(S(－ II) to S(0)),a transition process of S(0) to S(IV) and positive proton feedback from S(IV) to S(VI),could simulate batch oligooscillation and CSTR oscillation.This result is setting up a new channel to uncover the reaction mechanism and simulate the nonlinear phenomena in the reactions between chlorite and Sulfur(－ II).
The reaction between chlorite and thiourea could display batch oligooscillation and CSTR oscillation of pH, Batch pH peak has the same character with pH oscillation in a CSTR, The oxidation of thiourea produced intermediates such as HOSC(NH) NH2, HO2SC(NH)NH2, HO3S(NH) NH2 and bisulfite, The valence change of sulfur has close relation with pH dynamics. Through the mechanistic analysis, a general model of sulfur(-II) oxidation, which consists of negative hydrogen ion feedback (S(-II) to S(0)), a transition process of S(0) to S(IV) and positive proton feedback from S(IV) to S(VI), could simulate batch oligooscillation and CSTR oscillation. This result is setting up a new channel to uncover the reaction mechanism and simulate the nonlinear phenomena in the reactions between chlorite and Sulfur(-II).
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2001年第3期257-260,共4页
Acta Physico-Chimica Sinica
基金
国家自然科学基金!(29573109)
中国矿业大学科技基金资助项目&&
