FCT-2025-0432.R1 source document

The support and FeZnCr catalysts were characterized using X-ray diffraction (XRD, PANalytial X’Pert Powder, Netherlands), N2 physisorption (Micromeritics Tristar 3020, USA), H2 temperature-programmed reduction (H2-TPR, Micromeritics Autochem 2920, USA), NH3 temperature-programmed desorption (NH3-TPD, Micromeritics Autochem 2920, USA), pyridine-adsorption infrared spectroscopy (Py-IR, Thermo Fisher Nicolet IS10, USA), and X-ray photoelectron spectroscopy (XPS, Thermo Fisher K-Alpha, USA). The nitrogen content in the feedstock oil and reaction products was measured using sulfur/nitrogen analyzer (RPP-2000SN, Zhonghuan Instrument, China). All the data were plotted using Origin software.