化学学报 ›› 2008, Vol. 66 ›› Issue (11): 1317-1321. 上一篇    下一篇

研究论文

晶化温度对SAPO-34结构稳定性的影响

王利军*,1,赵海涛2,郝志显2,徐立陆2,解丽丽1,田震1,袁昊1,邴乃慈1,李庆华1   

  1. (1上海第二工业大学城市建设与环境工程学院 上海 201209)
    (2同济大学化学系 上海 200092)
  • 投稿日期:2007-10-24 修回日期:2008-01-22 发布日期:2008-06-14
  • 通讯作者: 王利军

Effect of Crystallization Temperature on SAPO-34 Structure Stability

WANG, Li-Jun*,1; ZHAO, Hai-Tao2; HAO, Zhi-Xian2; XU, Li-Lu2; XIE, Li-Li1; TIAN, Zhen1; YUAN, Hao1; BING, Nai-Ci1; LI, Qing-Hua1   

  1. (1 School of Urban Development and Environmental Engineering, Shanghai Second Polytechnic University, Shanghai 201209)
    (2 Department of Chemistry, Tongji University, Shanghai 200092)
  • Received:2007-10-24 Revised:2008-01-22 Published:2008-06-14
  • Contact: WANG, Li-Jun

用二乙胺结构导向剂, 分别在473和573 K水热晶化得到两种SAPO-34分子筛材料. SEM和XRD结果表明, 晶化温度升高, SAPO-34晶粒增大, 结晶度提高, 比表面积和孔径增大. 升高晶化温度, 提高了样品的最高焙烧和水蒸汽热处理承受温度.

关键词: 二乙胺, 水热法, SAPO-34, 焙烧, 水蒸汽热处理

Two SAPO-34 samples were hydrothermally synthesized at 473 and 573 K respectively with diethylamine as the structure-director. SEM and XRD results showed that the SAPO-34 crystal size, crystallinity, BET surface area and pore diameter increased with increasing the crystallization temperature. The highest permissible calcination temperature and the highest permissible steam treatment temperature increased with increasing the crystallization temperature.

Key words: diethylamine, hydrothermal method, SAPO-34, calcination, steam treatment