Preparing Copper/Manganese Catalyst by Sol-Gel Process for Catalytic Incineration of VOCs

Received: November 30, 2009
Revised: November 30, 2009
Accepted: November 30, 2009
Download Citation: RIS|BibTeX|https://doi.org/10.4209/aaqr.2009.05.0027  

Cite this article:
Lou, J.C., Yang, H.W. and Lin, C.H. (2009). Preparing Copper/Manganese Catalyst by Sol–Gel Process for Catalytic Incineration of VOCs. Aerosol Air Qual. Res. 9: 435-440. https://doi.org/10.4209/aaqr.2009.05.0027

ABSTRACT

Molecular sieve was utilized as a carrier of active metals copper and manganese to determine the effectiveness of removing toluen using a catalyst incineration. Catalysts with various metal ratios and weight loadings were produced by sol-gel to treat toluene. This investigation selected the most effective catalyst, based on the conversion rate of toluene and CO₂ yield. The influences of operating parameters of toluene oxidization on the conversion rate and long-term variations in catalytic activity were investigated, and the physical properties of catalysts were determined by Scanning Electron Microscopy (SEM). The conversion rate for toluene reached 50% and 95% (T₅₀ and T₉₅) when the Cu/Mn catalyst was used with a metal ratio of 1:1 and 20% loading at 263°C (T₅₀) and 400°C (T₉₅), respectively, an influent toluene concentration of 1000 ppm, oxygen concentration of 21%, a gas hourly space velocity (GHSV) of 12000/hr, and relative humidity (R.H.) of 26%. The stability of the Cu/Mn catalyst structure was assessed. This catalyst is a high-oxidation catalyst, yielding nearly 95% CO₂ at 400°C. Differences between fresh and aged catalysts were analyzed using analytical instruments, such as SEM. No obvious deactivation of the catalytic surface was detected.

Keywords: Molecular sieve; Cu/Mn catalyst; Sol-gel; Toluene; Operational parameters