Alkali-dissolving hydrothermal synthesis of zeolite P from fly ash

作者：Wang, Peng; Sun, Qi^*; Zhang, Yujiao; Cao, Jun

来源：Micro & Nano Letters, 2019, 14(5): 572-576.

DOI：10.1049/mnl.2018.5650

• dissolving
• crystal growth from solution
• thermal stability
• adsorption
• scanning electron microscopy
• zeolites
• fly ash
• desorption
• X-ray diffraction
• differential scanning calorimetry
• Fourier transform infrared spectra
• fluorescence
• solid-state phase transformations
• alkali-dissolving hydrothermal synthesis
• zeolite P
• pseudospherical form
• X-ray fluorescence
• Fourier-transform infrared spectroscopy
• zeolite materials
• thermogravimetry-differential scanning calorimetry

Zeolite P with the pseudo-spherical form was successfully synthesised from low-grade fly ash via alkali-dissolving hydrothermal synthesis method. These samples were characterised by X-ray diffraction, scanning electron microscope, X-ray fluorescence, Fourier-transform infrared spectroscopy, thermogravimetry-differential scanning calorimeter (TG-DSC) and Brunauer-Emmett-Teller. The textural properties of zeolite P were further studied by N-2 adsorption-desorption technique. In addition, the TG-DSC study confirmed that the bound water content of zeolite P is 19.7% and the phase transition temperature of zeolite P is 400 degrees C. Moreover, this thermal stability study approach not only extends the application of zeolite P but can be further extended to other zeolite materials as well.

• 单位
  兰州理工大学; 贵州大学