A new Pt three-way catalyst supported on CeO2–ZrO2–La2O3–Al2O3 via a double-solvent method was developed. For the conversion of a simulated compressed natural gas (CNG) vehicle exhaust, the catalyst showed a significant enhancement of the activity, which decreased the 100% conversion temperature (T100) for CH4 by about 46 °C compared with the catalyst prepared by conventional impregnation method.
