Supercritical solvothermal synthesis and formation mechanism of V2O3 microspheres with excellent catalytic activity on the thermal decomposition of ammonium perchlorate

Yang, Liuqing; Li, Xiaofang; Zhang, Xiongzhi; Huang, Chi

doi:10.1016/j.jallcom.2019.07.083

Cited by 13 publications

(2 citation statements)

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“…The peak at around 1420 cm –1 is the characteristic C–H stretch and bend, indicating the existence of residual C–H groups. The C–H groups and CO 2 observed in the spectrum after calcination treatment are assigned to the inevitable residual species on the samples or molecules absorbed in the atmosphere . These peaks could also be negligible for all OCs.…”

Section: Resultsmentioning

confidence: 98%

“…The C−H groups and CO 2 observed in the spectrum after calcination treatment are assigned to the inevitable residual species on the samples or molecules absorbed in the atmosphere. 47 These peaks could also be negligible for all OCs. The productivity of gaseous products for all doped OCs (except SFO/005Co in Figure S3d) is higher than SFO, suggesting that the doped OCs facilitated the conversion of CH 4 .…”

Section: Structural and Component Characterizationmentioning

confidence: 95%

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Effect of Nickel and Cobalt Doping on the Redox Performance of SrFeO_3−δ toward Chemical Looping Dry Reforming of Methane

et al. 2023

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The low-content metal dopant in the oxides has a beneficial effect on the redox performance of these materials. However, the role of dopants remains elusive. Herein, SrFeO 3−δ perovskites with low-content Ni or Co were investigated as oxygen carriers (OCs) for chemical looping dry reforming of methane. Compared with pristine SrFeO 3−δ , the doped ones show an accelerated transition phase in the reduction step. As a result, doping causes an increase in both methane conversion and amount of lattice oxygen consumption. Among the OCs, SFO/01Ni with a Ni/Sr mole ratio of 0.001 exhibits superior performance. The possible mechanism for the optimal SFO/01Ni is linked to the synergistic effect between the enhanced migration of lattice oxygen and the improved catalytic performance resulted from the reduced metal particles and anchored Ni particles. In 20 tailored redox cycles at 900 °C, the productivity of H 2 and CO over SFO/01Ni is always twice as high as that over SFO and SFO/01Co, suggesting that SFO/01Ni may sustain the periodically structural change in the bulk under the harsh reaction conditions. These findings advance the understanding of the role of non-noble dopants in methane oxidation over perovskites and may greatly inspire the rational OC design and exploration for chemical looping reforming.

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Section: Resultsmentioning

confidence: 98%

Section: Structural and Component Characterizationmentioning

confidence: 95%

Effect of Nickel and Cobalt Doping on the Redox Performance of SrFeO_3−δ toward Chemical Looping Dry Reforming of Methane

et al. 2023

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Synthesis of nanorods assembled V‐doped WO₃ microspheres and the catalytic performance in thermal decomposition of ammonium perchlorate

Chen

et al. 2021

J Chinese Chemical Soc

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V-doped WO 3 microspheres composed of nanorods radially grown from the center were fabricated via a simple hydrothermal method. The as-obtained products were characterized by several techniques such as X-ray powder diffraction (XRD), energy dispersive spectrometer (EDS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), Raman spectrum, and Brunauer-Emmett-Teller (BET). It was found that V atoms were incorporated inside the hexagonal WO 3 lattice. On the basis of time-dependent experiments, the formation mechanism for the as-prepared V-doped WO 3 micro-nanostructures was discussed. In addition, the catalytic properties of the synthesized material on the thermal decomposition of ammonium perchlorate (AP) were evaluated by thermal gravimetric and differential thermal analysis (TG/DTA), which showed the thermal decomposition temperatures of AP in the presence of 1, 2, and 4 wt% of V-doped WO 3 micro-nanostructures were reduced to 399, 393, and 380 C, respectively.

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Solvothermal and hydrothermal methods for preparative solid-state chemistry

Walton¹

2023

Comprehensive Inorganic Chemistry III

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Supercritical solvothermal synthesis and formation mechanism of V2O3 microspheres with excellent catalytic activity on the thermal decomposition of ammonium perchlorate

Cited by 13 publications

References 46 publications

Effect of Nickel and Cobalt Doping on the Redox Performance of SrFeO_3−δ toward Chemical Looping Dry Reforming of Methane

Effect of Nickel and Cobalt Doping on the Redox Performance of SrFeO_3−δ toward Chemical Looping Dry Reforming of Methane

Synthesis of nanorods assembled V‐doped WO₃ microspheres and the catalytic performance in thermal decomposition of ammonium perchlorate

Solvothermal and hydrothermal methods for preparative solid-state chemistry

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Supercritical solvothermal synthesis and formation mechanism of V2O3 microspheres with excellent catalytic activity on the thermal decomposition of ammonium perchlorate

Cited by 13 publications

References 46 publications

Effect of Nickel and Cobalt Doping on the Redox Performance of SrFeO3−δ toward Chemical Looping Dry Reforming of Methane

Effect of Nickel and Cobalt Doping on the Redox Performance of SrFeO3−δ toward Chemical Looping Dry Reforming of Methane

Synthesis of nanorods assembled V‐doped WO3 microspheres and the catalytic performance in thermal decomposition of ammonium perchlorate

Solvothermal and hydrothermal methods for preparative solid-state chemistry

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Product

Resources

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Effect of Nickel and Cobalt Doping on the Redox Performance of SrFeO_3−δ toward Chemical Looping Dry Reforming of Methane

Effect of Nickel and Cobalt Doping on the Redox Performance of SrFeO_3−δ toward Chemical Looping Dry Reforming of Methane

Synthesis of nanorods assembled V‐doped WO₃ microspheres and the catalytic performance in thermal decomposition of ammonium perchlorate