论文部分内容阅读
以向日葵盘为原料,利用纤维素酶制备果胶(SFP)。采用静态失重、极化曲线和交流阻抗技术研究SFP在1mol/L HCl及0.5mol/L H_2SO_4溶液中对碳钢的缓蚀性能,并探讨其在碳钢表面的吸附机理。结果表明,缓蚀效率随SFP浓度增大而增大,随温度升高而降低。在HCl和H_2SO_4溶液中,SFP的吸附方式分别服从Langmuir和Temkin等温式,属于物理吸附;极化曲线测试显示SFP是一种混合型缓蚀剂。本文的研究表明,向日葵盘果胶是碳钢的绿色高效缓蚀剂,且在HCl溶液中的缓蚀性能优于在H_2SO_4溶液中。
Sunflower plate as raw material, the use of cellulase preparation of pectin (SFP). The corrosion inhibition performance of SFP on carbon steel in 1 mol / L HCl and 0.5 mol / L H 2 SO 4 solution was investigated by static weight loss, polarization curves and AC impedance techniques. The adsorption mechanism of SFP on carbon steel was also discussed. The results show that the inhibition efficiency increases with increasing SFP concentration and decreases with increasing temperature. In HCl and H 2 SO 4 solutions, the adsorption of SFP to the Langmuir and Temkin isotherms, respectively, belongs to physical adsorption; polarization curve test shows that SFP is a mixed inhibitor. The research in this paper shows that sunflower disc pectin is a green and efficient corrosion inhibitor of carbon steel, and its corrosion inhibition performance in HCl solution is better than that in H 2 SO 4 solution.