摘要
以秸秆催化热解制得的糠醛作为盐酸酸洗缓蚀剂,其缓蚀效率采用失重法和电化学极化法进行了评价,初步探讨其吸附性能。结果表明:糠醛属于混合型缓蚀剂,在盐酸介质中缓蚀作用良好,室温下糠醛添加量为0.7%时,其缓蚀效率可达91.3%,能使碳钢的腐蚀反应活化能降低,腐蚀速率明显下降,同时其缓蚀效率受温度的影响较大,其吸附符合Langmuir吸附规律。
As a corrosion inhibitor, the corrosion inhibition of furfural obtained from straws by microwave pyrolysis was investiga- ted in hydrochloric acid solution. The weight loss and electrochemistry polarization evaluation, and the absorbance of furfural on carbon steel was preliminary discussed, The results showed that furfural, as a complex inhibitor, gives nice inhibition efficiency on carbon steel in hydrochloric acid medium. The inhibition efficiency of furfural was up to 91.3 % when the mass fraction of furrural reaches 0.7 % at room temperature. It can also reduce the activation energy of corrosion reaction. This results in a decrease of corrosion rate. The inhibition performance of furfural is affected by temperature, and its absorbance behaviors can be expressed by the equation of Langmuir model.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
2011年第6期83-86,共4页
Chemistry and Industry of Forest Products
基金
湖北自科基金项目(2007ABA253)
湖北省优秀中青年项目(Q200715004)
关键词
糠醛
盐酸酸洗
缓蚀剂
缓蚀性能
furfural
acid pickling of hydrochloric acid
corrosion inhibitor
inhibition performance
