摘要
通过在低浓度无机液体酸介质中添加少量磷钼酸(HPMo),成功地合成了高度有序的SBA-15介孔分子筛.N2吸附-脱附、XRD、TEM和水热稳定性实验等检测结果表明:用这种方法不仅可以大幅度降低合成SBA-15分子筛所需液体酸的用量和缩短晶化时间,同时反应产物SBA-15在100℃的水中处理72h后仍然保持六方有序的介孔结构.
Highly ordered SBA-15 sieves have been successfully synthesized in a low concentration liquid inorganic acid medium via the addition of small amounts of phosphomolybdic acid （HPMo）. The solid product was characterized by N2 adsorption-desorption, XRD, TEM and hydrothermal stability test. These results indicated that small amounts of HPMo in the synthesis media could reduce the amount of liquid inorganic acid and crystallization time greatly. And SBA-15 sieves prepared in this method exhibited an excellent hydrothermal stability, as its hexagonally ordered mesostructure was maintained after treated in 100 ℃ water over 72 h.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2007年第15期1481-1486,共6页
Acta Chimica Sinica
基金
国家自然科学基金重点项目(No.20433030)
国家"863"计划项目(No.2006AA03Z328)
国家自然科学基金(No.90610002)
浙江省自然科学基金(No.Z406142)资助项目.
关键词
模板剂
低浓度液体酸
磷钼酸
SBA-15
水热稳定性
template
low concentration liquid acid
phosphomolybdic acid
SBA-15
hydrothermal stability
