Fabrication of Sheet-Like Y Zeolites with Enhanced Mesoporosity and Their Application in Catalytic Cracking of n-Octane

The effects of this additive on the structural, textural, and acidic properties of the resulting zeolites were systematically characterized using X-ray diffraction (XRD, Panalytical Empyrean Powder, Netherlands), N2 physisorption (Micromeritics Tristar II 3020, USA), scanning electron microscopy (SEM, Zeiss GeminiSEM 300 instrument), transmission electron microscopy (TEM, JEOL JEM-2100, Japan), NH3 temperature-programmed desorption (NH3-TPD, Micromeritics Autochem 2920, USA), and pyridine-adsorption infrared spectroscopy (Py-IR, Thermo Fisher Nicolet IS10, USA). The n-octane cracking reaction was carried out in a continuous flow fixed-bed reactor.

The reaction products were analyzed online using an Agilent GC 7890 gas chromatograph equipped with a PONA column, a flame ionization detector (FID), and a thermal conductivity detector (TCD). Quantitative analysis was performed using the corrected area normalization method. All the data were plotted using Origin software.