Synthesis and characterization of α-Fe2O3 nanoparticles from different precursors and their catalytic effect on the thermal decomposition of nitrocellulose

Benhammada, Abdenacer; Kesraoui, Mohamed; Tarchoun, Ahmed Fouzi; Chelouche, Salim; Mezroua, Abderrahmane

doi:10.1016/j.tca.2020.178570

Cited by 69 publications

(40 citation statements)

References 65 publications

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“…The diffraction pattern of α-Fe 2 O 3 ( Figure 3 b) featured peaks at 2 θ = 25.3°, 33.5°, 36.3°, 40.3°, 50.2°, 55.2°, 57.8°, 63.5°, 65.2°, and corresponding to the (012), (104), (110), (113), (024), (116), (122), (214), and (300) planes of Fe 2 O 3 , respectively. The strongest peaks were assigned to the (104) and (110) planes, in line with the results of our previous study [ 44 , 47 ]. The diffraction pattern of nano-ZrO 2 ( Figure 3 c) featured peaks of the monoclinic (2 θ = 24.5°, 28.0°, 31.0°, and 34.0°) and tetragonal (2 θ = 35.0°, 50.0°, and 60.0°) forms [ 45 ].…”

Section: Resultssupporting

confidence: 91%

Highly efficient synthesis of biodiesel catalyzed by a cellulose@hematite-zirconia nanocomposite

Helmiyati

Abbas

Dini

et al. 2021

Heliyon

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The depletion of fossil fuels calls for the development of renewable alternatives such as biodiesel and has inspired much research on catalysts for the production of biodiesel through the esterification of biomass-derived materials. Herein, a green heterogeneous catalyst for highly efficient biodiesel synthesis was fabricated from rice straw–derived cellulose, hematite, and zirconia and was shown to contain porous irregularly shaped α-Fe 2 O 3 –ZrO 2 composites (average particle size = 42.5 nm) evenly distributed on the nanocellulose surface. The optimal catalyst (nanocellulose:α-Fe 2 O 3 –ZrO 2 = 2:1, w/w) afforded biodiesel in a yield of 92.50% and with specifications close to those prescribed by international standards. This catalyst could be reused for up to five cycles without a marked activity loss, with the biodiesel yield in the fifth cycle equaling 80.0%. The developed nanocomposite holds great promise for cutting the costs of biodiesel production, as it is derived from biodegradable raw materials and is renewable, non-corrosive, easy to handle, and green. In addition, the large-scale discharge of this catalyst after use does not pose a hazard to the environment.

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Section: Resultssupporting

confidence: 91%

Highly efficient synthesis of biodiesel catalyzed by a cellulose@hematite-zirconia nanocomposite

Helmiyati

Abbas

Dini

et al. 2021

Heliyon

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“…Recently, our research group revealed that NC containing Fe 2 O 3 nanoparticles using iron chloride as precursor decomposes following the random nucleation mechanism (Avrami–Erofeev) [ 4 ]. In other works, chemical reaction mechanism

has been assumed for pure NC and NC-Fe 2 O 3 composite utilizing iron chloride as precursor [ 14 ], and for NC-Al/Fe 2 O 3 mixture [ 15 ].…”

Section: Resultsmentioning

confidence: 99%

“…Cellulose nitrate, known as nitrocellulose (NC), is one of a main components of gun powder and solid propellants [ 1 , 2 , 3 ]. It has been widely investigated owing its thermal decomposition features, such as the decomposition temperature, activation energy, and reaction decomposition mechanism, notably influence the combustion behavior and/or performance characteristics of NC-based formulations [ 4 , 5 ]. It is recognized that the burning efficacy of solid propellants is closely dependent in the decomposition behavior of NC as well.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of Hematite Nanoparticles Decorated on Carbon Mesospheres and Their Synergetic Action on the Thermal Decomposition of Nitrocellulose

et al. 2020

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In this study, carbon mesospheres (CMS) and iron oxide nanoparticles decorated on carbon mesospheres (Fe2O3-CMS) were effectively synthesized by a direct and simple hydrothermal approach. α-Fe2O3 nanoparticles have been successfully dispersed in situ on a CMS surface. The nanoparticles obtained have been characterized by employing different analytical techniques encompassing Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, X-ray diffraction (XRD) and scanning electron microscopy (SEM). The produced carbon mesospheres, mostly spherical in shape, exhibited an average size of 334.5 nm, whereas that of Fe2O3 supported on CMS is at around 80 nm. The catalytic effect of the nanocatalyst on the thermal behavior of cellulose nitrate (NC) was investigated by utilizing differential scanning calorimetry (DSC). The determination of kinetic parameters has been carried out using four isoconversional kinetic methods based on DSC data obtained at various heating rates. It is demonstrated that Fe2O3-CMS have a minor influence on the decomposition temperature of NC, while a noticeable diminution of the activation energy is acquired. In contrast, pure CMS have a slight stabilizing effect with an increase of apparent activation energy. Furthermore, the decomposition reaction mechanism of NC is affected by the introduction of the nano-catalyst. Lastly, we can infer that Fe2O3-CMS may be securely employed as an effective catalyst for the thermal decomposition of NC.

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“…The average values of E α and LogA for all the isoconversional methods are displayed in Table . This constatation can be interpreted by the kinetic compensation effect . The CE parameters of TAS and VYA/CE methods are displayed in Table .…”

Section: Resultsmentioning

confidence: 99%

Non‐Isothermal Curing Kinetics of Alkali‐Treated Alfa Fibers/Polybenzoxazine Composites Using Differential Scanning Calorimetry

2020

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The exploration of curing process of benzoxazine resins, which possess outstanding features, is crucial for practical and advanced applications. In this study, bisphenol A-aniline based benzoxazine (BA-a) composites reinforced with alkali treated alfa fibers (TAF) were prepared. The influence of different loadings of the TAF on the curing kinetics of BA-a was investigated using non-isothermal differential scanning calorimetry (DSC) at different heating rates. Isoconversional integral methods or model free kinetics, namely, the iterative Kissinger-Akahira-Sunose (it-KAS), iterative Flynn-Wall-Ozawa (it-FWO), Sbirrazzuoli methodology (VYA/CE) and Trache-Abdelaziz-Siwa-ni (TAS) methods have been applied to the experimental data in order to evaluate the curing kinetic parameters. The study revealed that the presence of TAF improved the crosslinking reaction of benzoxazine and reduced the activation energy. The pre-exponential factor exhibited the same trend as the activation energy. The reaction model, examined for all composites, showed that all systems were accurately presented by an autocatalytic reaction model. The Avrami-Erofeev model was the most appropriate for describing the cure kinetics and revealed a good agreement with experimental data.

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Synthesis and characterization of α-Fe2O3 nanoparticles from different precursors and their catalytic effect on the thermal decomposition of nitrocellulose

Cited by 69 publications

References 65 publications

Highly efficient synthesis of biodiesel catalyzed by a cellulose@hematite-zirconia nanocomposite

Highly efficient synthesis of biodiesel catalyzed by a cellulose@hematite-zirconia nanocomposite

Hydrothermal Synthesis of Hematite Nanoparticles Decorated on Carbon Mesospheres and Their Synergetic Action on the Thermal Decomposition of Nitrocellulose

Non‐Isothermal Curing Kinetics of Alkali‐Treated Alfa Fibers/Polybenzoxazine Composites Using Differential Scanning Calorimetry

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