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Effects of various alkali metal cations on the synthesis, crystallization and catalytic properties of NKX-2 aluminophosphites

Abstract : Alkali metal-containing NKX-2 (M-NKX-2) aluminophosphite crystals were hydrothermally synthesized in the Al2O3-P2O5-Me2O-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.
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Submitted on : Thursday, November 26, 2020 - 10:41:28 AM
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Haruna Abdullahi, Ka-Lun Wong, Gin Keat Lim, Hussein Awala, Aurélie Vicente, et al.. Effects of various alkali metal cations on the synthesis, crystallization and catalytic properties of NKX-2 aluminophosphites. Materials Chemistry and Physics, Elsevier, 2019, 222, pp.81-86. ⟨10.1016/j.matchemphys.2018.09.082⟩. ⟨hal-03025081⟩

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