Improve the catalytic activity of α-Fe2O3 particles in decomposition of ammonium perchlorate by coating amorphous carbon on their surface

Zhang, Yifu; Liu, Xinghai; Nie, Jiaorong; Yu, Lei; Zhong, Yi; Huang, Chi

doi:10.1016/j.jssc.2010.12.004

Cited by 105 publications

(44 citation statements)

References 25 publications

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“…4b). The peaks at 2950 -2850 cm −1 and 1048 cm −1 are the characteristic C-H stretches, which will facilitate the linkage of catalytic species or polymers to the surface in its potential applications [38,[42][43][44]. The peak at 980 cm −1 corresponds to the symmetric stretching of the ν s (V 3+ =O) bond [45], in agreement with the XRD observation.…”

Section: Resultssupporting

confidence: 81%

“…These two peaks are characteristic of amorphous carbon [36,42,47]. It was reported [43,48,49] that the peak at 1353 cm −1 is usually associated with the vibrations of carbon atoms with dangling bonds for the in-plane terminations of disordered graphite, labeled as the Dband, and the peak at 1598 cm −1 is closely related to the vibration in all sp 2 -bonded carbon atoms in a two-dimensional hexagonal lattice, such as in a graphite layer, labeled as the G-band (corresponding to the E 2g mode). The intensity ratio of the G-and D-bands is I G /I D = 1.27 for the sample.…”

Section: Resultsmentioning

confidence: 98%

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Synthesis of V2O3/C composites with different morphologies by a facile route and phase transition properties of the compounds

Zhang

Wang

Huang

et al. 2014

Materials Science-Poland

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V 2 O 3 and amorphous carbon composites (V 2 O 3 /C composites) with different morphologies (e.g. nanospheres, nanorods and nanosheets) were, for the first time, successfully synthesized by a facile hydrothermal route and subsequent calcination. The as-obtained samples were characterized by X-ray powder diffraction (XRD), energy dispersive spectrometery (EDS), elemental analysis (EA), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The morphology of V 2 O 3 /C composites could be easily controlled by varying the reaction time, and, as a result, V 2 O 3 /C composites with nanospheres, nanorods and nanosheets were selectively synthesized. Furthermore, the phase transition property of V 2 O 3 /C composites was measured by differential scanning calorimetry (DSC), suggesting that V 2 O 3 /C composites exhibit the phase transition similar to V 2 O 3 , which could expand the potential applications of materials related to V 2 O 3 in the future.

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Section: Resultssupporting

confidence: 81%

Section: Resultsmentioning

confidence: 98%

Synthesis of V2O3/C composites with different morphologies by a facile route and phase transition properties of the compounds

Zhang

Wang

Huang

et al. 2014

Materials Science-Poland

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“…According to the previous studies [1,4,5,34], the decomposition of AP consists of essentially three steps:…”

Section: Resultsmentioning

confidence: 99%

“…Fe 2 O 3 , CuO, CoO, Fe 2 O 3 /C, etc.) as the additives to which the thermal decomposition of AP is extremely sensitivite [1][2][3][4][5]. Liu et al [6] reported that Cu, Al and Ni particles can lower the thermal decomposition temperature (T d ) of AP to 347, 425 and 364°C, respectively.…”

Section: Introductionmentioning

confidence: 99%

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The influence of VO₂(B) nanobelts on thermal decomposition of ammonium perchlorate

Zhang

Tan

Meng

2015

Materials Science-Poland

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The influence of vanadium dioxide VO 2 (B) on thermal decomposition of ammonium perchlorate (AP) has not been reported before. In this contribution, the effect of VO 2 (B) nanobelts on the thermal decomposition of AP was investigated by the ThermoGravimetric Analysis and Differential Thermal Analysis (TG/DTA). VO 2 (B) nanobelts were hydrothermally prepared using peroxovanadium (V) complexes, ethanol and water as starting materials. The thermal decomposition temperatures of AP in the presence of 1 wt.%, 3 wt.% and 6 wt.% of as-obtained VO 2 (B) nanobelts were reduced by 39°C, 62°C and 74°C, respectively. The results indicated that VO 2 (B) nanobelts had a great influence on the thermal decomposition temperature of AP. Furthermore, the influence of the corresponding V 2 O 5 , which was obtained by thermal treatment of VO 2 (B) nanobelts, on the thermal decomposition of AP was also investigated. The results showed that VO 2 (B) nanobelts had a greater influence on the thermal decomposition temperature of AP than that of V 2 O 5 .

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Quantitatively evaluating activity and number of catalytic sites on metal oxide for ammonium perchlorate decomposition

et al. 2022

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Ammonium perchlorate (AP) catalytic thermal decomposition by metal oxides is complex and there is still no suitable quantitative evaluation method to characterize intrinsic catalytic activity. Here, a new method to quantitatively evaluate the catalytic capability of metal oxides for AP decomposition has been proposed. We introduce two indicators, intrinsic peak temperature (T Ã HTD ) and catalytic density (ρ T Ã ) in hightemperature decomposition process, to uncouple activity and number of catalyst sites. Hematite (α-Fe 2 O 3 ) nanostructures with different shapes have been used as model catalysts to verify the feasibility of this method. Rod-like α-Fe 2 O 3 shows the best catalytic performance in AP decomposition with the lowest T Ã HTD of 345.1 C and highest ρ T Ã of 0.544, which indicate the largest number and highest activity of catalytic sites. Moreover, these new indicators are theoretically proven to be reasonable by density functional theory calculations.

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Improve the catalytic activity of α-Fe2O3 particles in decomposition of ammonium perchlorate by coating amorphous carbon on their surface

Cited by 105 publications

References 25 publications

Synthesis of V2O3/C composites with different morphologies by a facile route and phase transition properties of the compounds

Synthesis of V2O3/C composites with different morphologies by a facile route and phase transition properties of the compounds

The influence of VO₂(B) nanobelts on thermal decomposition of ammonium perchlorate

Quantitatively evaluating activity and number of catalytic sites on metal oxide for ammonium perchlorate decomposition

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Improve the catalytic activity of α-Fe2O3 particles in decomposition of ammonium perchlorate by coating amorphous carbon on their surface

Cited by 105 publications

References 25 publications

Synthesis of V2O3/C composites with different morphologies by a facile route and phase transition properties of the compounds

Synthesis of V2O3/C composites with different morphologies by a facile route and phase transition properties of the compounds

The influence of VO2(B) nanobelts on thermal decomposition of ammonium perchlorate

Quantitatively evaluating activity and number of catalytic sites on metal oxide for ammonium perchlorate decomposition

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The influence of VO₂(B) nanobelts on thermal decomposition of ammonium perchlorate