Metal vapor synthesis methyls

The use of ionic hquids (ILs) or eutectic mixtures as solvent in zeolite synthesis has been reported [178]. The IL, viz. l-methyl-3-ethylimidazolium bromide, was used both as solvent and as SDA. It solubilizes all components involved in the synthesis, while the electrostatic interaction between cations, IL and framework species form the basis of a strong templating effect [165, 178]. It was shown that the IL also works as a microwave absorber [172] and is suited for microwave-assisted zeolite synthesis. Because of the low vapor pressure of IL, the synthesis occurs at low pressure. The addition of amines to such synthesis mixtures yields pure API and ATV structures. The amine as well as the IL seem to exert a structure-directing effect [179]. This method is particularly useful for preparation of transition-metal functionalized frameworks, viz. Co-AlP04-n [180]. New zeotypes were obtained in the Al, P system, viz. SIZ-7, as well as in the Si system, viz. SIZ-12. 

---