Nitrogen‐doped reduced graphene oxide/Fe2O3 hybrid as efficient catalyst for ammonium nitrate

IF 1.7 4区 工程技术 Q3 CHEMISTRY, APPLIED
Manel Nourine, Moulai Karim Boulkadid, Sabri Touidjine, Elamine Louafi, Hamdane Akbi, Hamoud Abdelali, Moulay Yahia Zakaria, Samir Belkhiri
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Abstract

In this investigation, we successfully synthesized a hybrid material, N‐rGO@Fe2O3, via a one‐step hydrothermal process, comprising nitrogen‐doped reduced graphene oxide and α‐Fe2O3. Thorough characterization using diverse analytical methods validated its structure. Employing this hybrid composite as a catalyst, we studied its efficacy in the catalytic thermal decomposition of ammonium nitrate (AN). The N‐rGO@Fe2O3/AN composite was prepared using a recurrent spray coating method with 3 % mass of the hybrid material. Thermo‐gravimetric (TG) and differential scanning calorimetric (DSC) analyses were employed to investigate the catalytic effect. Computational assessment of Arrhenius parameters was conducted through isoconversional kinetic approaches. Results from the kinetic analysis allowed the determination of the critical ignition temperature. Furthermore, calorific values for pure AN and N‐rGO@Fe2O3/AN were measured using an oxygen calorimetric bombe, revealing a 41 % reduction in activation energy barrier and a lowering of the critical ignition temperature from 292 °C to 283 °C upon incorporation of the hybrid material. Notably, the surface modification of AN with N‐rGO@Fe2O3 resulted in an increase of 1440 J/g in the observed calorific values. These findings highlight the potential of N‐rGO@Fe2O3 as an effective catalyst, offering promising implications for applications in enhancing ammonium nitrate thermal decomposition.
氮掺杂还原氧化石墨烯/Fe2O3 杂化物作为硝酸铵的高效催化剂
在这项研究中,我们通过一步水热法成功合成了一种混合材料 N-rGO@Fe2O3,它由掺氮还原氧化石墨烯和α-Fe2O3 组成。使用多种分析方法对其进行的彻底表征验证了其结构。利用这种混合复合材料作为催化剂,我们研究了它在催化热分解硝酸铵(AN)中的功效。N-rGO@Fe2O3/AN 复合材料采用循环喷涂法制备,混合材料的质量为 3%。热重(TG)和差示扫描量热(DSC)分析被用来研究催化效果。通过等转化动力学方法对阿伦尼乌斯参数进行了计算评估。动力学分析的结果有助于确定临界点火温度。此外,使用氧气热量测定仪测量了纯 AN 和 N-rGO@Fe2O3/AN 的热值,结果表明,加入混合材料后,活化能垒降低了 41%,临界点火温度从 292°C 降至 283°C。值得注意的是,用 N-rGO@Fe2O3 对 AN 进行表面改性后,观察到的热值增加了 1440 焦耳/克。这些发现凸显了 N-rGO@Fe2O3 作为一种有效催化剂的潜力,为增强硝酸铵热分解的应用提供了广阔的前景。
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来源期刊
Propellants, Explosives, Pyrotechnics
Propellants, Explosives, Pyrotechnics 工程技术-工程:化工
CiteScore
4.20
自引率
16.70%
发文量
235
审稿时长
2.7 months
期刊介绍: Propellants, Explosives, Pyrotechnics (PEP) is an international, peer-reviewed journal containing Full Papers, Short Communications, critical Reviews, as well as details of forthcoming meetings and book reviews concerned with the research, development and production in relation to propellants, explosives, and pyrotechnics for all applications. Being the official journal of the International Pyrotechnics Society, PEP is a vital medium and the state-of-the-art forum for the exchange of science and technology in energetic materials. PEP is published 12 times a year. PEP is devoted to advancing the science, technology and engineering elements in the storage and manipulation of chemical energy, specifically in propellants, explosives and pyrotechnics. Articles should provide scientific context, articulate impact, and be generally applicable to the energetic materials and wider scientific community. PEP is not a defense journal and does not feature the weaponization of materials and related systems or include information that would aid in the development or utilization of improvised explosive systems, e.g., synthesis routes to terrorist explosives.
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