Author
Xiao-ge Han
Bio: Xiao-ge Han is an academic researcher from Beijing University of Chemical Technology. The author has contributed to research in topics: Decomposition & Thermal decomposition. The author has an hindex of 2, co-authored 2 publications receiving 19 citations.
Papers
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TL;DR: In this article, the effect of high gravity level (G) on the particle size and its distribution of α-Fe2O3 was explored and it was found that increasing the G of a rotating packed bed (RPB) is beneficial for the formation of particles with smaller particle sizes and narrower size distribution.
38 citations
TL;DR: Energetic additives can effectively increase the heat release of ammonium perchlorate (AP) decomposition to prevent nonenergetic additives from decreasing the energy density of composite solid proponents.
Abstract: Energetic additives can effectively increase the heat release of ammonium perchlorate (AP) decomposition to prevent nonenergetic additives from decreasing the energy density of composite solid prop...
7 citations
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TL;DR: It is verified that the accumulation of ammonia (NH3) on AP surface can inhibit its decomposition and that the facet effects are related to the adsorption and oxidation of NH3.
72 citations
TL;DR: In this paper, a facile technique for continuous preparation of nZVI with excellent dispersion and stability on a large scale using impinging stream-rotating packed bed (IS-RPB) as the reactor and chitosan as the stabilizer was reported.
65 citations
TL;DR: In this paper, the authors highlight strategies to enhance the thermal decomposition of ammonium perchlorate (AP) by tuning morphology, varying the types of metal ion, and coupling with carbon analogue.
45 citations
TL;DR: It is found that Co3O4 nanoparticles can be strongly anchored onto TiO2 supports accompanied by charge transfer and NH3 adsorption can be enhanced through hydrogen bonds at the interfaces in the Co 3O4/TiO2 nanostructure.
Abstract: Supports can widely affect or even dominate the catalytic activity and selectivity of nanoparticles because atomic geometry and electronic structures of active sites can be regulated, especially at the interface of nanoparticles and supports. However, the underlying mechanisms of most systems are still not fully understood yet. Herein, we construct the interface of Co3O4/TiO2 to boost ammonium perchlorate (AP) catalytic decomposition. This catalyst shows enhanced catalytic performance. With the addition of 2 wt % Co3O4/TiO2 catalysts, AP decomposition peak temperature decreases from 435.7 to 295.0 °C and activation energy decreases from 211.5 to 137.7 kJ mol-1. By combining experimental and theoretical studies, we find that Co3O4 nanoparticles can be strongly anchored onto TiO2 supports accompanied by charge transfer. Moreover, at the interfaces in the Co3O4/TiO2 nanostructure, NH3 adsorption can be enhanced through hydrogen bonds. Our research studies provide new insights into the promotion effects of the nanoparticle/support system on the AP decomposition process and inspire the design of efficient catalysts.
17 citations
TL;DR: In this article, an ice-crystal templating method was used to synthesize MXene-supported CuO nanocomposites for ammonium perchlorate (AP) decomposition and the results indicated that the MCNs as catalysts (2 wt%) could significantly decrease the high temperature decomposition (HTD) temperature of AP from 425.0 °C to 324.9 °C (AP with MCNs-3) and increase the exothermic heat from 295.2 J g−1 (pure AP) to 1272.9 J
Abstract: MXene-supported CuO nanocomposites (MCNs) were synthesized through an ice-crystal templating method without using any chemical modifiers. Nano-sized CuO particles were uniformly and stably attached to the surface of MXene nanosheets. The catalysis of the MCNs in ammonium perchlorate (AP) decomposition was studied and the results indicated that the MCNs as catalysts (2 wt%) could significantly decrease the high temperature decomposition (HTD) temperature of AP from 425.0 °C (pure AP) to 324.9 °C (AP with MCNs-3) and increase the exothermic heat from 295.2 J g−1 (pure AP) to 1272.9 J g−1 (AP with MCNs-3). With the increase of the mass ratio, the decomposition temperature decreased at first and then increased. When the ratio of MCNs-3 was 4 wt%, the HTD temperature of AP was reduced by as much as 114.4 °C and the exothermic heat was remarkably increased to 1360.6 J g−1. The high catalytic activity of MCNs-3 for AP thermal decomposition might be owing to the synergistic effect between MXene nanosheets and CuO nanoparticles. In other words, the results proved that the MXene in combination with CuO could be an effective way to enhance the catalytic performance of CuO in AP decomposition, which has potential application value in AP-based composite solid propellants.
15 citations