Ionothermal synthesis of microporous aluminum and gallium phosphates

A Rational Approach to the Ionothermal Synthesis of an AlPO4 Molecular Sieve with an LTA‐Type Framework

“…[13] The use of 1-ethyl-3-methylimidazolium bromide ([EMIM]Br) and 1-butyl-3-methylimidazolium bromide ([BMIM]Br) ionic liquids has been investigated in the area of zeolite synthesis. [5] [C n MIM]Br (n = 2-6) ILs have also been used to crystallize ionothermally GaPO 4 molecular sieves with LTA and -CLO framework structures. [4] LTA-type GaPO 4 zeolite were first synthesized ionothermally using a deep eutectic mixture.…”

“…[1,2] Alkyl imidazolium ILs have already been successfully used to synthesize phosphate-based zeolites with framework types including AFI, AEL, CHA, LTA, and -CLO. [2][3][4][5][6][7] Herein we report a novel ionothermal route for the crystallization of phosphate-based LTA-type zeolite using 1benzyl-3-methylimidazolium chloride ([BenzMIM]Cl). A rational synthesis protocol that exploits templates for the sodalite and a cages and takes charge balancing into account is presented.…”

“…[6] Recently, Han et al reported a ionothermal synthesis protocol for LTA-type AlPO 4 and GaPO 4 zeolites in which [EMIM]Br serves as solvent as well as SDA. [5] [C n MIM]Br (n = 2-6) ILs have also been used to crystallize ionothermally GaPO 4 molecular sieves with LTA and -CLO framework structures. [6] The LTA framework can be viewed as being composed of sodalite cages that are interconnected with D4R units to form large a cages.…”

The First Systematic Study on the Conditions Affecting the Ionothermal Synthesis of Silicoaluminophosphates

“…To date, most of the research has focused on the synthesis of aluminophosphates (AlPOs) using ionic liquids. Little evidence exists to show the ionothermal synthesis of SAPOs despite the importance of SAPOs in catalyst applications.…”

On the synthesis of AlPO4-21 molecular sieve by vapor phase transport method and its phase transformation to AlPO4-15 molecular sieve

“…[7] Synthesis using organic amines possesses many problems, including high production cost and environmental problems arising from the thermal decomposition of organic species. [8] Lately, an ionothermal synthesis method was reported for preparing molecular sieves using ionic liquids as both solvent and structure-directing agent (SDA), such as 1-butyl-3-methylimidazolium bromide ([bmim]Br), [9] choline mixed with pentaerythritol (ChCl), [10] 1-ethyl-3-methyl imidazolium bromide ([Emim]Br), [11] etc. However, its application is limited by complex synthesis process and expensive in the cost of ionic liquids.…”