تخمین میزان جذب شیف باز جدید بر روی سطح فولاد در محیط سولفوریک اسید

نوع مقاله : پژوهشی

نویسندگان

1 پژوهشگر، دانشکده مهندسی شیمی، دانشگاه آزاد اسلامی شهرضا، شهرضا، ایران

2 دانشیار/ استاد، دانشکده مهندسی شیمی، دانشگاه آزاد اسلامی شهرضا، شهرضا، ایران

3 استادیار/ استاد، دانشکده مهندسی شیمی، دانشگاه صنعتی همدان، همدان، ایران

چکیده

شیف باز جدید (HBDP) به‌عنوان بازدارنده خوردگی فولاد در محیط اسیدی مورد بررسی قرار گرفته است. به این منظور آزمایش‌های پلاریزاسیون و اندازه‌گیری امپدانس AC، مورد استفاده قرار گرفت. منحنی‌های پلاریزاسیون نشان می‌دهد که ترکیبات از نوع بازدارنده مخلوط هستند و با افزایش غلظت ترکیبات، کارایی بازدارندگی افزایش می‌یابد. علاوه بر این، (HBDP) بهترین میزان بازدارندگی را برای این سیستم با حداکثر IE تقریباً %59 در غلظت 0/8 میلی‌گرم در لیتر از بازدارنده نشان می‌دهد. این ترکیب از ایزوترم لانگمویر تبعیت می‌کند. در پایان سطح قطعه توسط میکروسکوپ نوری مورد بررسی قرار گرفت.

کلیدواژه‌ها


عنوان مقاله [English]

Investigation of Adsorption of New Schiff Base on Steel Surface in Sulfuric Acid Medium

نویسندگان [English]

  • hojat jafari 1
  • Elham Ameri 2
  • Majid Rezaeivala 3
1 Department of Chemical Engineering, Shahreza Branch, Islamic Azad University, Shahreza, Iran
2 Department of Chemical Engineering, Shahreza Branch, Islamic Azad University, Shahreza, Iran
3 Department of Chemical Engineering, Hamedan University of Technology, Hamedan, Iran
چکیده [English]

New Schiff base (HBDP) has been investigated as inhibitor for corrosion of steel in the acidic environment. For this purpose; potentiodynamic polarization, AC impedance measurements, were utilized. Polarization curves reveal that the compounds are mixed type inhibitor and inhibition efficiency increases with increasing concentration of compounds. Further, the (HBDP), displayed the best inhibiting characteristics for this system, with a maximum IE of approximately 59% having added only 0.8mg/L. The compound obeyed the Langmuir isotherm. At the end, the surface of the pieces was examined by optical microscopy.

کلیدواژه‌ها [English]

  • Acid corrosion
  • Steel
  • Schiff Base
  • TOEFL
  • Langmuir
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