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The preparation and characterization of ZnAlLa-CO_3~(2-) hydrotalcite using for PVC

Zhou Jianliang

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Abstract

The ZnAlLa-CO2-3 hydrotalcite was synthesized by anion exchange with nitrate of zinc,aluminum and lanthanum,and the phase structure,crystallinity and species of intercalated anion were characterized by XRD and FT-IR.The results showed that ZnAlLa-CO2-3 hydrotalcite with high crystallinity and purity can be synthesized by the method mentioned when n(La3+)/ n(Al3+) was not more than 1/8,pH=8.0,the time of anion exchange was 1.0~2.0 h and the dosage of sodium carbonate was equal to the double stoffmenge in the theory of requirements.

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What this paper is about

The ZnAlLa-CO2-3 hydrotalcite was synthesized by anion exchange with nitrate of zinc,aluminum and lanthanum,and the phase structure,crystallinity and species of intercalated anion were characterized by XRD and FT-IR.The results showed that ZnAlLa-CO2-3 hydrotalcite with high crystallinity and purity can be synthesized by the method mentioned when n(La3+)/ n(Al3+) was not more than 1/8,pH=8.0,the time of anion exchange was 1.0~2.0 h and the dosage of sodium carbonate was equal to the double stoffmenge in the theory of requirements.

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Available abstract

The ZnAlLa-CO2-3 hydrotalcite was synthesized by anion exchange with nitrate of zinc,aluminum and lanthanum,and the phase structure,crystallinity and species of intercalated anion were characterized by XRD and FT-IR.The results showed that ZnAlLa-CO2-3 hydrotalcite with high crystallinity and purity can be synthesized by the method mentioned when n(La3+)/ n(Al3+) was not more than 1/8,pH=8.0,the time of anion exchange was 1.0~2.0 h and the dosage of sodium carbonate was equal to the double stoffmenge in the theory of requirements.

Key concepts: Hydrotalcite, Crystallinity, Ion exchange, Inorganic chemistry, Lanthanum, Chemistry, Carbonate, Zinc

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