高等学校化学学报2011，Vol.32Issue(3)：743-747,5.
含氮FAU分子筛的制备、表征及碱催化反应性能
Preparation, Characterization and Basic Catalytic Properties of Nitrogen-incorporated FAU Zeolites
摘要
Abstract
Dehydration-nitridation method was employed to prepare nitrogen-incorporated HY zeolites. High crystallinity and specific surface area of parent HY were well preserved in nitrogen-incorporated HY zeolites.The base strength of HY framework was enhanced due to the replacement of oxygen by nitrogen with lower electronegativity. The acidity and basicity of nitrogen-incorporated HY zeolite were characterized by IR spectra using NH3 and CO2 as probe molecules and temperature-programmed desorption of CO2. The results show that the amounts of L-acid sites decrease while the amount of B-acid sites and base sites increase after nitridation.Moreover, new base sites with moderate strength are created after nitridation. Compared to parent HY zeolite,the nitridized sample exhibits improved basic catalytic performance in Knoevenagel condensation reaction.关键词
HY分子筛/脱水/氮化/酸性/碱性Key words
HY zeolite/ Dehydration/ Nitridation/ Acidity/ Basicity分类
化学化工引用本文复制引用
王涛,武光军,李兰冬,关乃佳..含氮FAU分子筛的制备、表征及碱催化反应性能[J].高等学校化学学报,2011,32(3):743-747,5.基金项目
国家"九七三"计划项目(批准号:2009CB623502)和国家自然科学基金(批准号:20777039)资助. （批准号:2009CB623502）
