화학공학소재연구정보센터
Applied Chemistry, Vol.6, No.1, 182-185, May, 2002
아스팔트 작용기들의 실리카 표면 흡착에 관한 연구
Adsorption of Asphalt Functionalities onto Silica Surface
The adsorption of asphalt functionalities on to silica surface was investigated. The silica surface was pretreated by adsorbing hexadecyltrimethyl ammonium chloride. The model asphalt functionalities selected in this study were benzoic acid, phenol, quinoline, benzophenone, and benzylbenzoate. The adsorption affinity of the functionalities on to silica surface was sequenced as phenol > benzoic acid > quinoline > benzophenone > benzylbenzoate when cyclohexane was used as the solvent. Adsorption amount of phenol and benzoic acid decreased about 5 times in aqueous solution. The precoated silica enhanced the adsorption of phenol and benzoic acid. From the results, it was found that adsorption of the acidic components could be enhanced by modifying the silica surface with cationic poly amine surfactant.