Effects of various alkali metal cations on the synthesis, crystallization and catalytic properties of NKX-2 aluminophosphites
Document Type
Article
Publication Date
1-1-2019
Abstract
Alkali metal-containing NKX-2 (M-NKX-2) aluminophosphite crystals were hydrothermally synthesized in the Al2O3–P2O5–M2O–H2O system for the first time using various alkali metal hydroxides (MOH: M = Li, Na, K, Cs). The results showed that NKX-2 crystalline phase could be obtained within several hours without using harmful organic amine structure-directing agent. In addition, the alkali metal hydroxides played an important role in controlling the crystallization rate and the morphology of M-NKX-2 particles in aqueous medium. The resulting M-NKX-2 solids possessed basicity which was catalytically active in base-catalyzed cyanoethylation reaction of methanol.
Keywords
Alkali metal cation containing NKX-2, Organotemplate-free synthesis, Aluminophosphite, Crystal growth, Cyanoethylation reaction
Divisions
InstituteofBiologicalSciences
Funders
FRGS (203/PKIMIA/6711495, 203/PKIMIA/6711461) and RUI (1001/PKIMIA/8011012) grants,Tertiary Education Trust Fund (TETFund) for a doctoral scholarship
Publication Title
Materials Chemistry and Physics
Volume
222
Publisher
Elsevier