咖啡果皮提取物对钢在三氯乙酸溶液中的缓蚀性能

穆显菊, 李向红, 雷然, 邓书端

Inhibitory Action of Coffee Skin Extract on Corrosion of Steel in Trichloroacetic Acid Solution

MU Xianju, LI Xianghong, LEI Ran, DENG Shuduan

表2 Langmuir和Freundlich吸附等温式的线性拟合参数和ΔG⁰

Table 2 Linear fitting parameters of Langmuir and Freundlich adsorption isotherms and ΔG⁰

Inhibitor	T ^oC	r²	Slope	K L·mg^-1	ΔG⁰ kJ·mol^-1
CSE	20	0.9993	0.98	0.0273	-34.7
	30	0.9903	0.84	0.0091	-33.1
	40	0.9638	1.08	0.1276	-41.0
	50	0.9746	1.17	0.0553	-40.1