摘要
Amphiphilic ODA/HY and ODA/ Hβ zeolites have been prepared via chemically coating octadecylamine (ODA) with alcohol as solvent. IR and titrimetric results indicate that ODA molecules are chemisorbed on the acidic sites in zeolite, showing the higher thermostability and alcohol-resistance. These am- phiphilic zeolites contain both the hydrophobic and hydrophilic groups, orient at the liquid-liquid phase-boundary in both cyclohexane/water and water/carbon tetrachloride systems, and exhibit the potential to be used in the phase-boundary catalysis and adsorption. No by-products with strong acid- ity are formed in this approach, therefore, it can be used to prepare amphiphilic acidic zeolites with low Si/Al ratio.
Amphiphilic ODA/HY and ODA/Hβzeolites have been prepared via chemically coating octadecylamine （ODA） with alcohol as solvent. IR and titrimetric results indicate that ODA molecules are chemisorbed on the acidic sites in zeolite, showing the higher thermostability and alcohol-resistance. These amphiphilic zeolites contain both the hydrophobic and hydrophilic groups, orient at the liquid-liquid phase-boundary in both cyclohexane/water and water/carbon tetrachloride systems, and exhibit the potential to be used in the phase-boundary catalysis and adsorption. No by-products with strong acidity are formed in this approach, therefore, it can be used to prepare amphiphilic acidic zeolites with low Si/AI ratio.
基金
Supported by the National Natural Science Foundation of China (Grant No. 20203010)
the Opening Test Fund of Nanjing University (Grant No. 0205001330)
关键词
酸性沸石
两性分子
化学涂覆
烷基胺
制备方法
amphiphilic zeolite, octadecylamine, chemically coating, preparation, characterization
