Interaction of Ethanol with Alumina, Silica - Alumina and Zeolites

• Autorzy: Sarbak Z.
• Języki publikacji: EN

Abstrakty

EN

Fourier transform infrared spectroscopy (FT-IR) has been applied to study the interaction of ethanol vapour with alumina (Degussa C), silica -alumina (Grace Division Chemical Research), zeolite X (Union Carbide) and Zeolite ZMS-5 (laboratory made). Different surface species have been identified after heating at 35, 200 and 300 oC. The interaction of ethanol with Al2O3 at 200C results in formation of a carboxylate system, which at temperature higher than 200C undergoes further decomposition with production of conventional (aromatic) coke and a species resembling acetyl groups. As a result of the interaction with amphorous silica-alumina, conventional coke is produced already at 200C, while with HX zeolite a deposit of mixture of conventional coke and carboxylate coke is formed. At 300C, the carboxylic deposit substantially disappears. The interaction of ethanol vapours with H-ZSM-5 zeolite at 200 and 300C leads to formation of a conventional deposit of alkyl-substitued naphthalenes and/or plyphenyles. As a result of ethanol dehydration water molecules were also detected.

Słowa kluczowe

EN

zeolites; catalysis; IR spectra; adsorption

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2000
• Tom: Vol. 74, nr 3
• Strony: 439--446

Twórcy

autor

Sarbak Z.

• Faculty of Chemistry Adam Mickiewicz University Grunwaldzka 6 60-780 Poznań