Studies on the Synthesis and Grafting of the Salicylate Pillared Hydrotalcite Organic/Inorganic Hybrid

Abstract

Abstract: In this paper,salicylate-pillared MgAl hydrotalcite organic/inorganic hybrid was synthesized by using direct anion exchange method in the aqueous solution with NO3-MgAl as precursor,and was characterized by XRD,IR and DTA.The guest-host interaction in the synthesized sample was investigated.Results show that the thermal stabilities of the brucite-like layers and the inserted anion pillars in the salicylate pillared hydrotalcite are largely improved due to the guest-host interaction.DTA combined with the XRD and IR studies of the sample calcined at different temperatures reveal that the grafting of the guest anions to the host brucite-like layers takes place during the thermal processing accompanying the Hydrogen-bonding formation,and the proper grafting temperatures are between the elimination of water molecules from the interlayer space and the elimination of the hydroxyl groups from the brucite-like layers.

Key words: hydrotalcite, organic/inorganic hybrids, synthesis, grafting

GUO Jun, GE Ke, HE Shen-Yang, LI Jia-Qi, LIU Xin. Studies on the Synthesis and Grafting of the Salicylate Pillared Hydrotalcite Organic/Inorganic Hybrid[J]. journal6, 2005, 26(4): 45-49.

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