A new strategy to generate strong basic sites on neutral salt KNO3 modified NaY

作者：Sun Lin Bing; Chun Yuan; Gu Fang Na; Yue Ming Bo; Yu Qing; Wang Ying; Zhu Jian Hua^*

来源：Materials Letters, 2007, 61(11-12): 2130-2134.

DOI：10.1016/j.matlet.2006.08.037

• neutral salt
• KNO3/NaY composite materials
• solid base catalysts
• methanol
• cyclopentadiene
• methylation

A new strategy was introduced to decompose KNO3 and generate strong basic sites at the temperature as low as 723 K and the base strength (H-) of 15.0-18.4 was measured on KNO3NaY composites. The basic sites produced were further characterized by FTIR, CO2-TPD and titration of basicity. The redox interaction between loaded KNO3 and methanol was proved to be accounted for the generation of basic sites on KNO3/NaY composites and the interaction pathway was proposed by evacuated FTIR and TG/MS. In comparison with the conventional thermal approach, the redox process could also suppress the release of NOx from KNO3 decomposition according to the results of the colorimetric method and TG/MS. In addition, solid bases KNO3/NaY were firstly employed to catalyze the vapor phase methylation of cyclopentadiene (CPD). The basic sites generated through the interaction between KNO3 and methanol were catalytically active for CPD methylation.

• 出版日期2007-5
• 单位南京大学