Filtration of chlorine and hydrogen chloride gas by engineered UiO-66-NH₂ metal-organic framework

Chlorine (Cl₂) and hydrogen chloride (HCl) are heavily utilized industrial chemicals that present significant respiratory health risks. The metal-organic framework UiO-66-NH₂ has shown an unprecedented ability in powder form to remove chlorine gas. Here, we engineered UiO-66-NH₂ into 20×40 mesh granules and evaluated their ability to remove chlorine and hydrogen chloride gas challenges. The exposed materials were characterized with nitrogen isotherms, powder X-ray diffraction, and attenuated total reflectance - Fourier transform infrared spectroscopy. Breakthrough results revealed that UiO-66-NH₂ sorption of chlorine and hydrogen chloride met or exceeded sorption of state-of-the-art metal-impregnated activated carbon materials on a mass and volume basis in engineered form.