摘要
提出了应用高效NaY沸石导向剂快速合成A型沸石的新方法.在合成过程中,NaY沸石导向剂提供了全部硅源(无需另加硅源).与用水玻璃提供硅源的合成方法相比,该法晶化速度快,合成温度低,并可在低碱度条件下合成超细A型沸石.29S i NMR表征和UV Ram an研究表明,高效NaY沸石导向剂中含有大量的六元环等低分子量硅铝酸根前驱体,它们有利于A型沸石成核与晶体生长.
A new route for fast crystallization of LTA zeolite by using highly efficient NaY seed solution as a silica source was demostrated. Compared with water glass, NaY seed solution used in the synthesis of LTA zeolite shows obvious advantages including relatively short crystallization time, low crystallization temperature, small crystal size and low alkalinity. Characterization of NaY seed solution by 29Si NMR and UV Raman techniques suggests that zeolite primary building units such as six-membered ring contained in NaY seed solution possibly promote the nucleation and growth of LTA zeolite.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2007年第1期21-25,共5页
Chemical Journal of Chinese Universities
基金
国家'九七三'计划(批准号:2003CB615802)
北京宝洁技术有限公司无机助剂开发项目资助
