铁修饰多壁碳纳米管和铁离子液体修饰多壁碳纳米管对高氯酸铵热分解的影响,Zeitschrift für anorganische und allgemeine Chemie

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铁修饰多壁碳纳米管和铁离子液体修饰多壁碳纳米管对高氯酸铵热分解的影响
Zeitschrift für anorganische und allgemeine Chemie ( IF 1.1 ) Pub Date : 2021-07-02 , DOI: 10.1002/zaac.202100153
Samir Belkhiri ₁ , Hocine Kechit ₂ , Arvind Kumar Bhakta ₃ , Djalal Trache ₂ , Zineb Mekhalif ₄ , Ahmed Fouzi Tarchoun ₂

Affiliation

在本研究中，四种纳米催化剂的效果，即纯化的多壁碳纳米管 (MWCNTs)、离子液体功能化的 MWCNTs (MWCNTs-IL)、铁纳米粒子装饰的 MWCNTs (Fe-MWCNTs) 和杂化 Fe-MWCNTs -IL 对高氯酸铵 (AP) 的热分解进行了突出显示。首先，MWCNTs在红外照射下被纯化和浸渍，然后煅烧以获得Fe-MWCNTs。其次，合成了一种基于氯化胆碱和尿素的绿色离子液体（IL），并将其用于MWCNTs和Fe-MWCNTs的功能化，分别获得MWCNTs-IL和Fe-MWCNTs-IL。随后，将这些纳米材料以 1 wt.% 的比例引入 AP 以使用 DSC 和 TG 分析评估其催化效果。获得的结果突出了功能化的 MWCNTs 对 AP 热分解的催化作用，其中添加 AP 的分解温度分别降低了 10.7、48.4 和 49.9 °C，而分解焓增加了 56.76、689.99 和 861.11 J/g分别使用 MWCNTs-IL、Fe-MWCNTs 和 Fe-MWCNTs-IL。此外，动力学参数的计算证实，Fe-MWCNTs-IL 杂化物获得了最佳催化效果，揭示了铁和离子液体的协同作用。这种组合可以获得最低的活化能（~120 kJ/mol）。分别为 Fe-MWCNTs 和 Fe-MWCNTs-IL。此外，动力学参数的计算证实，Fe-MWCNTs-IL 杂化物获得了最佳催化效果，揭示了铁和离子液体的协同作用。这种组合可以获得最低的活化能（~120 kJ/mol）。分别为 Fe-MWCNTs 和 Fe-MWCNTs-IL。此外，动力学参数的计算证实，Fe-MWCNTs-IL 杂化物获得了最佳催化效果，揭示了铁和离子液体的协同作用。这种组合可以获得最低的活化能（~120 kJ/mol）。

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The effect of iron decorated MWCNTs and iron-ionic liquid decorated MWCNTs onto thermal decomposition of ammonium perchlorate

In the present study, the effect of four nanocatalysts, namely, purified multi-walled carbon nanotubes (MWCNTs), MWCNTs functionalized with ionic liquid (MWCNTs-IL), MWCNTs decorated with iron nanoparticles (Fe-MWCNTs) and the hybrid Fe-MWCNTs-IL on the thermal decomposition of ammonium perchlorate (AP) is highlighted. Firstly, MWCNTs are purified and impregnated under infrared irradiation followed by calcinations to obtain Fe-MWCNTs. Secondly, a green ionic liquid (IL), based on choline chloride and urea is synthesized and used for the functionalization of MWCNTs and Fe-MWCNTs to obtain MWCNTs-IL and Fe-MWCNTs-IL, respectively. Subsequently, these nanomaterials at a ratio of 1 wt.% are introduced to AP to assess their catalytic effect using DSC and TG analyses. The obtained results highlight the catalytic effect of the functionalized MWCNTs on the thermal decomposition of AP for which a decrease in decomposition temperature of 10.7, 48.4 and 49.9 °C with an increase in decomposition enthalpy of 56.76, 689.99 and 861.11 J/g for AP supplemented with MWCNTs-IL, Fe-MWCNTs and Fe-MWCNTs-IL, respectively. Furthermore, the calculation of the kinetic parameters confirms that the best catalytic effect is obtained with the Fe-MWCNTs-IL hybrid, revealing the synergistic effect of iron and ionic liquid. This combination allows obtaining the lowest activation energy (∼120 kJ/mol).

更新日期：2021-09-02

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