In situ synthesis of MgWO4–GO nanocomposites and their catalytic effect on the thermal decomposition of HMX, RDX and AP

Wang, Jingjing; Wang, Weimin; Wang, Jinghua; Xu, Kangzhen

doi:10.1007/s42823-019-00112-1

Cited by 33 publications

(19 citation statements)

References 41 publications

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“…The order of catalytic performance is Cu–Co/GO(Ar) > Cu–Co/GO(N 2 ) > Cu–Co/GO > Cu–Co/GO(air). Compared with the catalytic effect on RDX of MgFe 2 O 4 –GO and MgWO 4 –GO composites, , the two composites made the thermal decomposition temperature of RDX reduce by 8.3 and 11.1 °C, respectively, lower than that of Cu–Co/GO(Ar) (13.7 °C). Therefore, the Cu–Co/GO composite has the better catalytic performance as compared to Mg–Fe and Mg–W composites.…”

Section: Resultsmentioning

confidence: 83%

“…31 In this work, we originally plan to obtain CuCo 2 O 4 −GO composites by an in situ self-assembly method, which is the same as the preparation of MgFe 2 O 4 −GO and MgWO 4 −GO nanocomposites in our previous work. 32,33 However, it was surprising that a strange Cu−Co/GO composite with regular morphology and uniform particle size was finally fabricated according to the characterization results. The Cu−Co/GO composite was further calcined in three different atmospheres (air, N 2 , and Ar), and their structure, morphology, and components were characterized and investigated by XRD, SEM, TEM, ICP-MS, XPS, Raman, TG/DTG, and FT-IR technologies.…”

Section: Introductionmentioning

confidence: 99%

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Unusual Cu–Co/GO Composite with Special High Organic Content Synthesized by an in Situ Self-Assembly Approach: Pyrolysis and Catalytic Decomposition on Energetic Materials

Wang

Lian

Yan

et al. 2020

ACS Appl. Mater. Interfaces

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An interesting Cu−Co/GO composite with special high organic content was accidentally fabricated for the first time via a one-pot solvothermal method in the mixed solvent of isopropanol and glycerol. The Cu−Co/GO composite was calcined separately in three different atmospheres (air, nitrogen, and argon) and further investigated by a series of characterization techniques. The results indicate that the spinel phase nano-CuCo 2 O 4 composite, nanometal oxides (CuO and CoO), and nanometal mixture of Cu and Co were unexpectedly formed after calcination in air, N 2 , and Ar atmospheres, respectively, and the possible reaction mechanism was discussed. The specific mass losses of the Cu−Co/GO composite calcined in air, N 2 , and Ar atmospheres were 28.14 %, 21.68 %, and 23.76 %, respectively. The catalytic decomposition performances of the as-prepared samples for cyclotrimethylenetrinitramine (RDX) and the mixture of nitrocellulose (NC) and RDX (NC + RDX) were investigated and compared via DSC method, and the results demonstrate that Cu−Co/GO composites obviously decrease the thermal decomposition temperature of RDX from 242.3 to 236.5 (before calcination), 238.6 (air), 235.8 (N 2 ), and 228.6 °C (Ar), respectively. Cu−Co/GO(Ar) composite exhibits the best catalytic decomposition performance among all samples, which makes the decomposition temperature of RDX and NC + RDX decrease by 13.7 and 4.9 °C and the apparent activation energy of decomposition for RDX decrease by 110.1 kJ/mol. The enhanced catalytic performance of Cu−Co/GO(Ar) composite could be attributed to the smaller particle size, better crystallinity, and specific welldispersed metal atoms, whereas the Cu−Co/GO(air) composite after air calcination presents a bad catalytic performance due to the removal of GO.

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Section: Resultsmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Unusual Cu–Co/GO Composite with Special High Organic Content Synthesized by an in Situ Self-Assembly Approach: Pyrolysis and Catalytic Decomposition on Energetic Materials

Wang

Lian

Yan

et al. 2020

ACS Appl. Mater. Interfaces

Self Cite

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“…Although the nanocomposites prepared by this method show better catalytic performance than their mono-component, the binding strength of the catalyst with GO is low, which can easily lead to their separation and the reduction of the catalytic activity. 77 As a result, the in situ synthesis method is given more researches and shows more attraction.…”

Section: Ex Situ Synthesismentioning

confidence: 99%

“…In addition, the decomposition tests exhibit that the composites prepared by in situ growth method have higher catalytic activity and can significantly reduce the decomposition temperature and apparent activation energy of AP by 100.3 C and 46.4 kJ/mol, respectively. Wang et al 77 believe that the dispersants used in the in situ growth process affect the structure, particle size, and dispersibility of the nanocomposites. In recent years, ternary transition metal oxides (TTOMs) with two different metal cations have attracted extensive researches as a novel catalyst due to the excellent electrical conductivity and synergistic effect of the two metals.…”

Section: In Situ Synthesismentioning

confidence: 99%

Recent advances on graphene microstructure engineering for propellant‐related applications

Liu

Zheng

Zhang³

et al. 2021

J of Applied Polymer Sci

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As a special polymeric composite and military-strategic material, composite solid propellant has attracted extensive attention and efforts to improve its performances. Graphene been regarded as an ideal material to enhance the performances of propellants, because of its excellent physical and chemical properties, such as ultra-strong strength, large specific surface area, remarkable thermal conductivity, and phenomenal electrical performance. Moreover, the microstructure engineering based on graphene has been demonstrated to reveal effective influences on the composites. Recently, many new advances have been developed in microstructure engineering of graphene for propellant-related applications. In this article, we first present an overview of the main synthesis methods of graphene. Subsequently, these new advances are reviewed, discussed, and summarized carefully. Finally, the application prospects of microstructure engineering of graphene in the propellant field are proposed.

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“…And carbon materials have been widely utilized to reduce the sensitivity for their unique structure and excellent physical and chemical properties [6,[25][26][27]. Compared with other carbon materials, graphene oxide (GO) has presented as a competitive candidate for coating material due to its excellent hydrophilicity and excellent electrical, mechanical and thermal properties [28][29][30][31][32]. Unfortunately, the nitro group of explosive and carboxyl group of GO both endows these two materials with negative charge respectively.…”

Section: Introductionmentioning

confidence: 99%

Interaction‐Enhanced Coating of Energetic Material: A Generally Applicable Method for the Desensitization

Song

Huang

Zhang

et al. 2022

Propellants Explo Pyrotec

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Inspired by the better desensitizing effect introduced by enhanced interaction, ammonium formate (Am) was utilized to modify graphene oxide (GO) and the functional graphene oxide (Am−GO) was obtained in this work, which was endowed with more amino groups and completely positive charge. Due to the modification and corresponding enhanced interaction, the impact sensitivity and friction sensitivity of HMX/Am−GO can be desensitized to 40 J and 192 N, respectively. To further desensitize the friction sensitivity, graphite (G) was utilized to replace part of Am−GO. And HMX/Am−GO/G was endowed with 40 J and 360 N of impact sensitivity and friction sensitivity respectively, which is the best desensitizing effect of HMX to our best knowledge. Furthermore, CL‐20 and DNTF were coated by the same coating, which also can be desensitized with the best effect. In addition, because the coating process is performed in water at room temperature, this desensitization is environment‐friendly and benefit for the large scale of production. This work demonstrates the improved desensitizing effect with enhanced interaction and provides a potential general applicable method for desensitization.

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In situ synthesis of MgWO4–GO nanocomposites and their catalytic effect on the thermal decomposition of HMX, RDX and AP

Cited by 33 publications

References 41 publications

Unusual Cu–Co/GO Composite with Special High Organic Content Synthesized by an in Situ Self-Assembly Approach: Pyrolysis and Catalytic Decomposition on Energetic Materials

Unusual Cu–Co/GO Composite with Special High Organic Content Synthesized by an in Situ Self-Assembly Approach: Pyrolysis and Catalytic Decomposition on Energetic Materials

Recent advances on graphene microstructure engineering for propellant‐related applications

Interaction‐Enhanced Coating of Energetic Material: A Generally Applicable Method for the Desensitization

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