摘要
迄今为止,化学振荡的研究主要限于描述物质浓度的振荡,有关热力学量的振荡报导极少.这可能是由于振荡机理(或模型)中的热力学量无法确定的缘故.我们采用将标准化学亲合势作为可调参数的方法,并依据非平衡态热力学理论中热力学量与物质的浓度关系,使得热力学量振荡的研究变为现实.本文用计算机数值计算,得出了开放系Brusseltor各元反应的反应速率、化学亲合势及体系熵产生随时间的变化行为,展示了它们的振荡特征。
The time variation of chemical affinities A_p and entropy production ? of an openBrusselator system has been studied. It was found that the oscillating characteristicsof A_p and ? are quite different. While A_p oscillations with a single peak in everyperiod, ? has either a single peak or two-peak oscillations which depend on the ki-netic mechanism of oscillation or values of A_p~?. The meaning to study oscillation ofthermodynamic quantities was also discussed.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1992年第6期824-828,共5页
Acta Physico-Chimica Sinica
关键词
振荡
化学亲合势
熵
Oscillation
Chemical affinity
Entropy production
