STA-18, a new member of the SFW family of molecular sieve zeotypes, methods of preparation and use
申请人:Johnson Matthey Public Limited Company
公开号:US10040690B2
公开(公告)日:2018-08-07
STA-18, a molecular sieve having a SFW structure and containing phosphorus in the framework, is described. STA-18AP (as prepared) can have a lower alkyl amine, such as trimethylamine, and one of 1,6-(1,4-diazabicyclo[2.2.2]octane)hexyl cations (from diDABCO-C6) or 1,7-(1,4-diazabicyclo[2.2.2]octane)heptyl cations (from diDABCO-C7) or 1,8-(1,4-diazabicyclo[2.2.2]octane)octyl cations (from diDABCO-C8) as SDAs. A lower alkyl ammonium hydroxide, such as tetrabutylammonium hydroxide, can be used as a pH modifier for making SAPO STA-18. A calcined product, STA-18C, formed from STA-18AP is also described. Methods of preparing STA-18AP, STA-18C and metal containing calcined counterparts of STA-18C are described along with methods of using STA-18C and metal containing calcined counterparts of STA-18C in a variety of processes, such as treating exhaust gases and converting methanol to olefins are described.
本文介绍了一种具有 SFW 结构且框架中含磷的分子筛 STA-18。STA-18AP(制备方法)可含有低级烷基胺(如三甲胺)和 1,6-(1,4-二氮杂双环[2.2.2]辛烷)己基阳离子(来自 diDABCO-C6)或 1,7-(1,4-二氮杂双环[2.2.2.2]辛烷)庚基阳离子(来自 diDABCO-C7)或 1,8-(1,4-二氮杂双环[2.2.2]辛烷)辛基阳离子(来自 diDABCO-C8)作为 SDA。低级烷基氢氧化铵(如四丁基氢氧化铵)可用作制造 SAPO STA-18 的 pH 调节剂。此外,还介绍了由 STA-18AP 生成的煅烧产品 STA-18C。描述了制备 STA-18AP、STA-18C 和 STA-18C 的含金属煅烧对应物的方法,以及在各种工艺中使用 STA-18C 和 STA-18C 的含金属煅烧对应物的方法,例如处理废气和将甲醇转化为烯烃。