
Molecules, Год журнала: 2024, Номер 29(14), С. 3309 - 3309
Опубликована: Июль 13, 2024
CO-selective methanation (CO-SMET) is an efficient hydrogen-rich (H2-rich) gas purification technology for proton exchange membrane fuel cells. It vital to develop suitable catalysts with good low-temperature activity CO-SMET reactions. In this study, RuNi/TiZrx-mixed metal oxide (RuNi/TiZrx-MMO) different molar ratios of Zr/Ti, derived from a Zr-promoted NiTi-layered double hydroxide (NiTi-LDH) precursor were successfully prepared using the co-precipitation and wet impregnation methods. The RuNi/TiZr0.2-MMO catalyst possesses higher catalytic performance in lower temperature window 180–280 °C, which can reduce CO concentration be below 10 ppm. characterization results obtained XRD, BET, SEM, TEM, XPS, TPR, TPD suggest that addition ZrO2 increases surface area catalyst, improves dispersion metallic nanoparticles, reducibility Ni species on catalyst’s surface, enhances adsorption activation ability CO, resulting remarkable at reaction temperatures. Moreover, demonstrated long-term stability carbon resistance.
Язык: Английский