Removal of Volatile Organic Compounds Driven by Platinum Supported on Amorphous Phosphated Titanium Oxide

Abstract

Development of high efficiency catalyst is the key factor to catalytic combustion of volatile organic compounds (VOCs). Herein, amorphous mesoporous phosphated TiO 2 (ATO-P) with high specific surface area supported platinum catalyst was successfully fabricated. P-dopant can increase the surface area (up to 278.9 m2•g-1) of ATO-P, which is 21 times higher than that of pristine TiO 2 , and make the amorphous titanium oxide structure. The supported Pt catalyst with amorphous mesoporous feature shows impressive performance and excellent thermostability for VOCs oxidation. The Pt/ATO-P catalyst exhibits outstanding catalytic efficiency, the T 50 and T 90 (temperatures required for achieving conversions of 50% and 90%) are respectively 130℃ and 140℃, for toluene oxidation under high gas hourly space velocity (GHSV) of 36000 mL•h-1•g-1 and toluene concentration of 10000 mL•m-3. The performance is superior to the reference Pt/TiO 2 and comparable with the state-of-the-art catalysts. These findings can make a significant contribution on the new applications of amorphous mesoporous phosphated materials in VOCs removal. © 2020, Science Press. All right reserved.