摘要
采用 NMR研究了活化焙烧对 Co- ZSM- 5分子筛结构的影响。结果表明 ,焙烧使分子筛结构发生了较大变化 ,焙烧温度高于 6 0 0℃ ,分子筛骨架脱铝明显 ;焙烧温度高于 75 0℃ ,分子筛骨架结构遭到破坏。
By means of NMR technique,the effects of calcination on the NMR spectra of Co-ZSM-5 zeolite catalyst under aldehyde-ammonia condensation were studied.The NMR spectra of zeolite were greatly influenced by the calcination. The framework of zeolite would suffer dealumination by calcination at temperature higher than 600℃ and severe destruction at temperature higher than 750℃.
出处
《光谱实验室》
CAS
CSCD
2003年第5期668-670,共3页
Chinese Journal of Spectroscopy Laboratory
基金
中国石油化工股份有限公司基金资助项目 (2 0 0 0 2 1)
关键词
焙烧
醛氨缩合
催化剂
Co-ZSM-5
分子筛
核磁共振
Calcination, Co-ZSM-5, NMR, Structure, Zeolite, Aldehyde-Ammonia Conden-sation,Catalyst.
