期刊
GREEN CHEMISTRY LETTERS AND REVIEWS
卷 4, 期 3, 页码 273-279出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/17518253.2011.571716
关键词
corrosion inhibitors; copper; adsorption; thiamine hydrochloride; HNO3; kinetic parameters
The inhibitory effect of 3-[(4-amino-2-methyl-5-pyrimidinyl) methyl]-5-(2-hydroxyethyl)-4-methyl thiazolium chloride hydrochloride (thiamine hydrochloride) or vitamin B-1 hydrochloride on acid corrosion of copper in 2.5 M nitric acid (HNO3) solution was investigated using a weight loss method. Thiamine hydrochloride inhibited the corrosion of copper in 2.5 M HNO3 solutions. The inhibition efficiency increased with increasing concentration of thiamine hydrochloride but decreased with increasing exposure. Adsorption of thiamine hydrochloride molecules on copper surface was found to obey Langmuir adsorption isotherm with standard free energy of adsorption (Delta G(ad)(o)) -30.55 kJ mol(-1). The inhibition mechanism was characterized from trends of inhibition efficiency, thermodynamic, and kinetic parameters.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据