设为首页

加入收藏

网友留言

2015年4月15日 星期三

首页

工作动态

化工文摘

期刊展示

化工专利

国外文献

科技资讯

期刊评价

会员展示

公示公告

<li< ul=""></li<>

从年到年 用户名

：

密码

：

首页 >>

Inhibition Effect of Hydantoin Compounds on the Corrosion of Iron in Nitric and Sulfuric Acid Solutions

download book

book

库名: 外文馆藏期刊题录数据库

ID代码:WTL20020531099527

分类号:TQ

第一作者单位：Chemistry Department, Faculty of Science, Tanta University, 31527 Tanta,

Egypt

页数：14

年卷期:V.132 N.2 2001

语种： eng

刊名： Monatshefte fur Chemie Chemical Monthly

Montel Williams Loans

作者：Loutfy H.Madkour

出版年：2001

文摘：

The inhibition of corrosion of iron in 2M itric acid and 2M sulfuric acid solutions by substituted

phenylphydantoin, hiohydantiin, and dithiohydantoin compounds was measured using

thermometric, weight loss, and polarization methods. The three methods gae consitstent

results. The polarization curves indicated that the hydantoin compounds act as mixed-type

inhibvitors. The adsorption of the inhibitors were found to obey the Temkin adsorption

isotherm. The higher inhibition efficiency of the additives in nitric with respect to sulfuric acid

solution may be attributed to he reduced formation of soluble quaternary nmitrogen salts in

nitric acid medium, favouring adsorption of the parent additive on the metal surface. The

obtained results indicate that the corrosion rate of iron in both acids increases with increasing

temperature, both in absence and presence of the tested inhibitors. Kinetic-thermodynamic

model functions and Temkin isotherm data are compared and discussed. The synergistic effect

of halide anion on the inhibition efficiency of the hydantoin compounds was also investigated.

关于协会 协会网刊 化工年鉴 政策法规 展会信息 化工园区

free book

download book

联系我们

free book

download book

电话：010-64437120 传真：010-64437120

地址：北京市朝阳区亚运村安慧里四区16楼716室 邮 编：100723

技术支持：北京勤云科技发展有限公司

设为首页

加入收藏

网友留言

2015年4月15日 星期三

首页

工作动态

化工文摘

期刊展示

化工专利

国外文献

科技资讯

期刊评价

会员展示

公示公告

<li< ul=""></li<>

从年到年 用户名

：

密码

：

首页 >>

Inhibition Effect of Hydantoin Compounds on the Corrosion of Iron in Nitric and Sulfuric Acid Solutions

download book

book

库名: 外文馆藏期刊题录数据库

ID代码:WTL20020531099527

分类号:TQ

第一作者单位：Chemistry Department, Faculty of Science, Tanta University, 31527 Tanta,

Egypt

页数：14

年卷期:V.132 N.2 2001

语种： eng

刊名： Monatshefte fur Chemie Chemical Monthly

Montel Williams Loans

作者：Loutfy H.Madkour

出版年：2001

文摘：

The inhibition of corrosion of iron in 2M itric acid and 2M sulfuric acid solutions by substituted

phenylphydantoin, hiohydantiin, and dithiohydantoin compounds was measured using

thermometric, weight loss, and polarization methods. The three methods gae consitstent

results. The polarization curves indicated that the hydantoin compounds act as mixed-type

inhibvitors. The adsorption of the inhibitors were found to obey the Temkin adsorption

isotherm. The higher inhibition efficiency of the additives in nitric with respect to sulfuric acid

solution may be attributed to he reduced formation of soluble quaternary nmitrogen salts in

nitric acid medium, favouring adsorption of the parent additive on the metal surface. The

obtained results indicate that the corrosion rate of iron in both acids increases with increasing

temperature, both in absence and presence of the tested inhibitors. Kinetic-thermodynamic

model functions and Temkin isotherm data are compared and discussed. The synergistic effect

of halide anion on the inhibition efficiency of the hydantoin compounds was also investigated.

关于协会 协会网刊 化工年鉴 政策法规 展会信息 化工园区

free book

download book

联系我们

free book

download book

电话：010-64437120 传真：010-64437120

地址：北京市朝阳区亚运村安慧里四区16楼716室 邮 编：100723

技术支持：北京勤云科技发展有限公司