Traditional processes for treating vanadium slag generate a huge volume of solid residue and a large amount of harmful gas,which cause serious environmental problems.In this study,a new process for the comprehensive utilization of vanadium slag was proposed,wherein zeolite A and a V_2O_5/TiO_2 system were synthesized.The structural properties of the as-synthesized zeolite A and the V_2O_5/TiO_2system were characterized using various experimental techniques,including X-ray diffraction,X-ray fluorescence,scanning electron microscopy,and infrared spectroscopy.The results reveal that zeolite A and the V_2O_5/TiO_2 system are successfully obtained with high purity.The results of gas adsorption measurements indicate that the prepared zeolite A exhibits high selectivity for CO_2 over N_2 and is a candidate material for CO_2 capture from flue-gas streams. Traditional processes for treating vanadium slag generate a huge volume of solid residues and a large amount of harmful gases, which causes serious environmental problems. In this study, a new process for the comprehensive utilization of vanadium slag was proposed, wherein zeolite A and a V 2 O 5 / TiO 2 system were synthesized. The structural properties of the as-synthesized zeolite A and the V 2 O 5 / TiO 2 system were characterized using various experimental techniques, including X-ray diffraction, X-ray fluorescence, scanning electron microscopy, and infrared spectroscopy. These findings reveal that zeolite A and the V 2 O 5 / TiO 2 system are successfully obtained with high purity. These results of gas adsorption measurements indicate that the prepared zeolite A exhibits high selectivity for CO 2 over N 2 and is a candidate material for CO 2 capture from flue-gas streams.