摘要
目前国内外文献报道的SAPO分子筛都是由水热法完成。固相化学反应可以从根本上消除溶剂化作用，从而使反应在一个全新的化学环境下进行。超浓体系下分子筛的合成是以固相化学为基础，不使用溶剂，可以减少污染，节约能源，是值得倡导的研究方向。笔者通过固相转化机理及方法的运用，在节能、减排的前提下，首次设计并实现了在超浓体系中SAPO分子筛的合成，得到了高产率、高结晶度的纯相SAPO-34分子筛。且经过调节模板剂量、硅／铝比、氟化铵量和磷／铝比，实现SAPO-34共晶分子筛的合成及有效控制其中各物相含量的目的。
Silicoatuminophosphate （SAPO） molecular sieves are currently synthesized by hydrothermal method reported from all domestic and overseas literatures. The synthesis of molecular sieves in extremely dense system based on the solid chemistry is carried out without solvent, which can obviously reduce the pollution and save the energy resources, so that this method is a research area worthy of promoting. On the premise of save energy and reduce emission, the synthesis of silicoaluminophosphate（SAPO） molecular sieves in extremely dense system based on the solid phase transformation mechanism was designed and actualized, in which pure SAPO-34 molecular sieves with high yield and crystallinity was obtained. Furthermore the eutectic molecular sieves of SAPO-34 can be obtained and its content can be effectively controlled through adjusting the dosage of template, n（SiO2 ）/n（Al2O3 ）, n（ NH4 F ） / n（ Al2O3 ） and n（ P2O5 ） / n（ Al2O3 ） .
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2008年第B10期230-233,244,共5页
Acta Petrolei Sinica(Petroleum Processing Section)
关键词
SAPO-34
SAPO分子筛
超浓体系
共晶
SAPO-34
SAPO molecular sieves
extremely dense system
eutectic molecular sieves
作者简介
通讯联系人：窦涛，Tel：0351-6010550—7；E—mail：dtao1@163．com
