THE SYNTHESIS OF 2-PHENYL-4,5-DI(2-PYRIDYL)IMIDAZOLE, 2-PHENYL-4,5-DI(2-PYRIDYL)OXAZOLE, AND 2-(2-HYDROXYPHENYL)-4,5-DI(2-PYRIDYL)IMIDAZOLE AS CORROSION INHIBITORS TOWARD CARBON STEEL

• Main Author: FATMAWATI MUNAZIM (NIM: 20508026), IIS
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/12232
• Institution: Institut Teknologi Bandung

Corrosion is the deterioration of materials by chemical interaction with their environment. In industry, particularly petrochemical industry, corrosion is one problem that inflicts loss and danger. Corrosion control and inhibition needs high cost and could be minimalized using existing technology through the application of best available practices, primarily through the use of organic compound inhibitors as imidazole and oxazole derivative compounds. The efficiency of various imidazole and oxazole derivatives as corrosion inhibitors was widely investigated and showed different results that associated with the molecular structure.<p>The aims of the present work was to investigate the efficiency of 2-phenyl-4,5-di(2-pyridyl)imidazole (1), 2-phenyl-4,5-di(2-pyridyl)oxazole, (2) and 2-(2-hydroxyphenyl)-4,5-di(2-pyridyl)imidazole (3), which have never been used as corrosion inhibitors. The compounds are considered to be effective corrosion inhibitors because its planar heterocyclic structures, having high electronic density, containing phi-electrons of conjugated double bonds, having hydrophobic properties, containing electronegative functional groups and the nitrogen atom with its lone pair electrons. Those properties would facilitate the good adsorption on the metal surface and increase the corrosion inhibition activity. <br />