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

doi:10.15541/jim20190154

Abstract

Abstract:

Development of high efficiency catalyst is the key factor to catalytic combustion of volatile organic compounds (VOCs). Herein, amorphous mesoporous phosphated TiO₂ (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 TiO₂, 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 T₅₀ and T₉₀ (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/TiO₂ 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.

Key words: amorphous mesoporous structure, phosphated TiO₂, Pt nanoparticle, toluene oxidation, VOCs removal

CLC Number:

O782

HUANG Xieyi,WANG Peng,YIN Guoheng,ZHANG Shaoning,ZHAO Wei,WANG Dong,BI Qingyuan,HUANG Fuqiang. Removal of Volatile Organic Compounds Driven by Platinum Supported on Amorphous Phosphated Titanium Oxide[J]. Journal of Inorganic Materials, 2020, 35(4): 482-490.

Figures/Tables 18

References 40

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Catalyst	BET surface area /(m²?g^-1)	Pore volume /(cm³?g^-1)	Pore size /nm	Elemental composition /wt%^[a]
Catalyst	BET surface area /(m²?g^-1)	Pore volume /(cm³?g^-1)	Pore size /nm	P	Ti	O
TiO₂	10.9	0.04	15.7	-	60.0	40.0
ATO-P	278.9	0.80	11.4	19.2	32.1	48.7

Catalyst	BET surface area /(m²?g^-1)	Pore volume /(cm³?g^-1)	Pore size /nm	Elemental composition /wt%^[a]
Catalyst	BET surface area /(m²?g^-1)	Pore volume /(cm³?g^-1)	Pore size /nm	P	Ti	O
TiO₂	10.9	0.04	15.7	-	60.0	40.0
ATO-P	278.9	0.80	11.4	19.2	32.1	48.7