Effect of Zirconia on Hydrothermally Synthesized Co<sub>3</sub>O<sub>4</sub>/TiO<sub>2</sub> Catalyst for NO<sub>x</sub> Reduction from Engine Emissions
oleh: Muhammad Habib Ur Rehman, Tayyaba Noor, Naseem Iqbal
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2020-02-01 |
Deskripsi
Effect of zirconia on the 6 wt.% Co<sub>3</sub>O<sub>4</sub>/TiO<sub>2</sub> catalyst for NO<sub>x</sub> reduction is investigated in this paper. Co<sub>3</sub>O<sub>4</sub>/TiO<sub>2</sub> catalyst was prepared by using hydrothermal method and then was promoted with zirconia by impregnation to get 8% wt. ZrO<sub>2</sub>-Co<sub>3</sub>O<sub>4</sub>/TiO<sub>2</sub> catalyst. Catalysts were characterized by using XRD, SEM, and TGA. Catalysts real time activity was tested by coating them on stainless steel wire meshes, containing them in a mild steel shell and mounting them at the exhaust tailpipe of a 72 cm<sup>3</sup> motorcycle engine. Zirconia promoted catalyst showed higher conversion efficiency of NO<sub>X</sub> than the simple Co<sub>3</sub>O<sub>4</sub>/TiO<sub>2</sub> catalyst due to small crystalline size, fouling inhibition and thermal stability.