Papers by Keyword: Mg,Al-Hydrotalcite

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Authors: Qiang Luo, Qing Li Ren
Abstract: A prediction model for purity of the artificial synthetic hydrotalcite under varied process parameters based on improved artificial back-propagation (BP) neural networks is developed. And the non-linear relationship between the hydrotalcite purity and the raw material adding amount of NaOH, MgCl2 and AlCl3 was established based on BP learning algorithm analysis and convergence improvement. The hydrotalcite purity can be predicted by means of the trained neural net. Thus, by virtue of the prediction model, the future hydrotalcite purity can be evaluated under random complicated raw material amounts. Moreover, the best processing technology is optimized using the genetic algorithm.
495
Authors: Qing Li Ren, Qiang Luo, Wei Chen
Abstract: The highly pure acicular nanosize Mg,Al-hydrotalcite was synthesized by the one-step liquid reaction method at atmospheric pressure. The favorable growth unit in the reaction liquid, the requirements of Al3+ entering the Mg2+-(OH-)6 octahedral and forming the growth unit M-(OH-1)6 (M=Mg2+, Al3+) and growth mechanism that the nanosize Mg,Al-hydrotalcite crystal embryo follows are studied according to the test results of XRD, TEM, SEM and IR. Later, that the nanosize Mg,Alhydrotalcite crystal embryo growth follows the gathering growth theory was deeply investigated.
489
Authors: Xiu Bin Ren, An Ning Zhou, Bo Liu, Long Lei
Abstract: Coal/Mg,Al-hydrotalcite composites were prepared and the flame-retardant properties were studied. DSC analysis was used to study the flame-retardant properties of the composites. The results showed that the heat release of coal can be effectively decreased and the ignition point of the coal can be availably increased. The results indicated that coal/Mg,Al-hydrotalcite composites showed excellent flame-retardant performance.
270
Authors: Qing Li Ren, Qiang Luo
Abstract: The highly pure nanocrystalline Mg,Al-hydrotalcite with Sr2+ doping was synthesized by the one-step liquid reaction method at atmospheric pressure. And the preparation of the Sr2+-doped Mg,Al-hydrotalcite nanocrystalline was investigated according to the results of XRD, TEM, Raman and DSC. Moreover, based on the DSC test results, the thermal mechanism functions of the Mg,Al-hydrotalcite with Sr2+ doping are studied in detail after calculation and comparison.
1570
Authors: Qing Li Ren, Qiang Luo
Abstract: The highly pure nanocrystalline Mg,Al-hydrotalcite with Zn2+ doping was synthesized by the one-step liquid reaction method at atmospheric pressure. And the preparation of the Zn2+-doped Mg,Al-hydrotalcite nanocrystalline was investigated according to the results of XRD, TEM, IR and DSC. Moreover, based on the DSC test results, the thermal mechanism functions of the Mg,Al-hydrotalcite with Zn2+ doping are studied in detail after calculation and comparison.
2071
Authors: Qing Li Ren, Qiang Luo
Abstract: The Mg,Al-hydrotalcite/PE-EVA flame-retardant nanocomposites were prepared by the co-mixing method at atmospheric pressure successfully. Moreover, the preparation of Mg,Alhydrotalcite/ PE-EVA nanocomposites was investigated according to the mechanical and flame-retardant tests of the samples. And the results show that the Mg,Al-hydrotalcite nanocrystalline is a highperformance inorganic flame-retardant agent.
1013
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