Spiral gas–solid two-phase flow continuous mechanochemical synthesis of salophen complexes and catalytic thermal decomposition of ammonium perchlorate

Song, Yong; Jin, Zhiyuan; Zhang, Juan; Jin, Bo; Peng, Rufang

doi:10.1039/d3dt03644h

Cited by 3 publications

(2 citation statements)

References 63 publications

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“…As is well known, AP thermal decomposition can be divided into two stages: low temperature and high temperature. The first stage was at approximately 320°C, and the high temperature decomposition was at approximately 420°C ( Song et al, 2024 ). As shown in Figure 6 , we analyzed the catalytic effect of Mn/C aerogels on AP from the perspective of thermal decomposition kinetics and calculated the thermal decomposition activation energy of pure AP and the thermal decomposition activation energy after adding Mn/C aerogels using the Kissinger equation ( Dong et al, 2022 ; Yan et al, 2022 ).…”

Section: Resultsmentioning

confidence: 99%

Mn/carbon aerogels derived from the water-induced self-assembly of UIO-66 (Mn) for the thermal decomposition of ammonium perchlorate

Zhao,

Liu,

Wang

et al. 2024

Front. Chem.

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In solid propellants, combustion catalysts play a crucial role. Here, we introduce a convenient method for the self-assembly of UIO-66 (Mn) in the presence of water, leading to the preparation of Mn/C aerogels. The aerogels were successfully utilized in the thermocatalytic decomposition of ammonium perchlorate (AP). The results indicate that the incorporation of 2% mass fraction of Mn/C aerogels enhances the peak temperature of AP decomposition by approximately 87.5°C. Mn/C aerogels demonstrate excellent catalytic performance. In combination with kinetics, we propose a thermal catalytic mechanism.

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Section: Resultsmentioning

confidence: 99%

Mn/carbon aerogels derived from the water-induced self-assembly of UIO-66 (Mn) for the thermal decomposition of ammonium perchlorate

Zhao,

Liu,

Wang

et al. 2024

Front. Chem.

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show abstract

“…As is well known, AP thermal decomposition can be divided into two stages: low temperature and high temperature. The first stage was at approximately 320 °C, and the high temperature decomposition was at approximately 420 °C (Song et al, 2024). As shown in Figure 6, we analyzed the catalytic effect of Mn/C aerogels on AP from the perspective of thermal decomposition kinetics and calculated the thermal decomposition activation energy of pure AP and the thermal decomposition activation energy after adding Mn/C aerogels using the Kissinger equation (Dong et al, 2022;Yan et al, 2022).…”

Section: Thermal Behaviormentioning

confidence: 99%

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Influences of the Decomposition Atmosphere and Heating Rate on the Pyrolysis Behaviors of Resin Sand

Xu,

Zhu,

et al. 2024

Buildings

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The pouring of sand casting is accompanied by severe heat conduction, and there is an urgent need to investigate the pyrolysis properties of foundry sand. The main purpose of this study was to investigate the pyrolysis behaviors of resin sand, including precoated sand (PCS), hot box sand (HBS), and warm box sand (WBS), at heating rates of 20 °C/min, 30 °C/min, and 40 °C/min in nitrogen and air atmospheres. The mass loss of the resin sand was monitored continuously with a simultaneous thermal analyzer, and the kinetic parameters of the resin sand were calculated based on the Coats–Redfern method and thermal data. The average mass loss of the resin sand during pyrolysis was 3.03%, which was much smaller than that of the other sands. The volatile release characteristic index of resin sand could not be calculated based on this concept. To solve this issue, the term Tstv/mloss was established, and its value was determined. With increasing heating rates from 20 °C/min to 30 °C/min and from 30 °C/min to 40 °C/min, the mass losses of the resin sand increased by 0.79% and 0.64%, respectively, and the volatile release characteristic indices of the resin sand increased by 3.8 × 10−10 and 1.06 × 10−9, respectively. In addition, the mass losses and volatile release characteristic indices of resin sand in an air atmosphere were greater than those in a nitrogen atmosphere. With increasing heating rate, the activation energy of the resin sand decreased in a nitrogen atmosphere. The findings concerning the thermal decomposition behaviors of resin sand provided a theoretical basis for the pouring step of the sand casting process.

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Spiral gas–solid two-phase flow continuous mechanochemical synthesis of salophen complexes and catalytic thermal decomposition of ammonium perchlorate

Abstract: Four salophen complexes were prepared using the spiral gas–solid two-phase flow (S-GSF) technique and applied to catalyze AP, reducing the high-temperature decomposition peak of AP and its activation energy.

Cited by 3 publications

References 63 publications

Mn/carbon aerogels derived from the water-induced self-assembly of UIO-66 (Mn) for the thermal decomposition of ammonium perchlorate

Mn/carbon aerogels derived from the water-induced self-assembly of UIO-66 (Mn) for the thermal decomposition of ammonium perchlorate

DataSheet1.PDF

Influences of the Decomposition Atmosphere and Heating Rate on the Pyrolysis Behaviors of Resin Sand

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