2026-10-13T08:22:44Z https://www.scidb.cn/oai

10.57760/sciencedb.j00124.00568 2026-07-09T09:54:29Z

2026-07-09 The dataset of the study on the Methanation Performance and Mechanism of Ni/Al2O3 Catalysts under the Influence of Mg Additive doi:10.57760/sciencedb.j00124.00568 en Nitrogen adsorption-desorption isotherms were obtained using a V-Sorb 2800 analyzer; specific surface area was determined based on the BET method; and the pore volume and pore size of the catalyst were calculated using the Barrett-Joyner-Halenda (BJH) theory. A Philip-FEI Tecnai G2F30 high-resolution transmission electron microscope was used to analyze the support morphology and the size and dispersion of Ni particles in the samples. An X-ray diffractometer operated at 40 kV and 40 mA was used, employing Cu-Kα radiation as the source, with a scanning speed of 5°/min over the 2θ range of 5-90°. A Micromeritics AutoChem II 2920 chemical adsorption analyzer was used to analyze the reduction characteristics of the catalyst (particle size: 100 μm) via temperature-programmed reduction (TPR) analysis. Using a Micromeritics AutoChem II 2920 chemisorption analyzer, the temperature-programmed desorption (TPD) technique was employed to evaluate the H2 adsorption capacity of the reduced catalyst, thereby analyzing the number of active sites on the catalyst. Thermogravimetric analysis was performed on a QMA200M TGA/DTA system, with samples heated from room temperature to 900 °C at a rate of 10 °C/min in an atmosphere of 10 mL/min oxygen. Fourier transform infrared spectroscopy was performed using a Bruker VERTEX 80v instrument. Multiple scans were conducted for each sample to ensure data reproducibility and reliability. The final spectral data were processed and analyzed using OPUS software to identify characteristic absorption peaks and perform further quantitative and qualitative analysis.All data were plotted using Origin software.  methodanation; cordierite; monolithic catalyst; density functional theory Xing Wanli PUBLIC https://creativecommons.org/licenses/by-nc/4.0/ dataset Science Data Bank