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Synthesis of nanostructured gamma-AlOOH and its accelerating behavior on the thermal decomposition of AP

机译：纳米结构γ-ALOOH的合成及其对AP热分解的加速行为

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摘要

The hydrothermal treatment of gamma-AlOOH agglomerates was introduced to synthesize nanostructured gamma-AlOOH. Various characterizations were carried out to understand the synthesis procedure and the relationship between the shape of gamma-AlOOH and its accelerating behavior for the thermal decomposition of ammonium perchlorate (AP). XRD, SEM and HRTEM showed that the gamma-AlOOH nanoplates, nanorods and nanocubes with exposed (031), (110) and (001) facets, respectively, could be synthesized under controllable conditions. The DSC results showed that the addition of gamma-AlOOH nanoplates, nanorods and nanocubes to AP remarkably decreased the decomposition temperature of AP from approximately 450 degrees C to 334 degrees C, 345 degrees C, and 357 degrees C, respectively. As the preferred additive, the gamma-AlOOH nanoplate addition resulted in a decrease in the activation energy of AP from 346.29 kJ mol(-1) to 144.73 kJ mol(-1), determined by nonisothermal kinetic analysis. XRD, FT-IR and XPS results revealed that the gamma-AlOOH phase transformed to gamma-Al2O3 and alpha-AlOOH after being used as an additive for the AP decomposition; the excessive surface hydroxyls obtained by the exposed (031) facet of gamma-AlOOH nanoplates, proved to be beneficial for accelerating AP decomposition.
机译：引入了γ-alooh附聚物的水热处理以合成纳米结构γ-alooh。进行各种特征以了解合成程序和γ-alooh形状与其加速行为的合成程序及其加速行为的热分解（AP）。 XRD，SEM和HRTEM显示γ-alooh纳米板，纳米棒和具有暴露（031），（110）和（001）刻面的纳米孔可以在可控条件下合成。 DSC结果表明，将γ-alOOH纳米板，纳米棒和纳米孔加入AP的加入显着地降低了AP的分解温度从大约450℃至334摄氏度，345℃和357℃。作为优选的添加剂，添加的γ-alooh纳米板加成导致AP的活化能量从346.29kJ摩尔（-1）至144.73kJ摩尔（-1）中的减少，由非等温动力学分析确定。 XRD，FT-IR和XPS结果显示，在用作AP分解的添加剂后，γ-alooh相变为γ-Al2O3和α-AlOOH;通过γ-aloOH纳米液体的暴露（031）刻面获得的过量表面羟基，证明是有益于加速AP分解的有益。

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  • 来源
    《RSC Advances》 |2016年第32期|共7页
  • 作者

    Zhang Hailin; Li Ping; Cui Wenwen; Liu Chuang; Wang Shulei; Zheng Shili; Zhang Yi;

  • 作者单位

    Chinese Acad Sci Inst Proc Engn Natl Engn Lab Hydromet Cleaner Prod Technol Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Proc Engn Natl Engn Lab Hydromet Cleaner Prod Technol Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Proc Engn Natl Engn Lab Hydromet Cleaner Prod Technol Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Proc Engn Natl Engn Lab Hydromet Cleaner Prod Technol Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Proc Engn Natl Engn Lab Hydromet Cleaner Prod Technol Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Proc Engn Natl Engn Lab Hydromet Cleaner Prod Technol Beijing 100190 Peoples R China;

    Chinese Acad Sci Inst Proc Engn Natl Engn Lab Hydromet Cleaner Prod Technol Beijing 100190 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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