| 摘要 |
<p>A method for treatment of a particulate filter, in particular for a vehicle exhaust system, in which at least a filter body of the particulate filter is handled, and at least the filter body is soaked in an acid during a predetermined period of time. The filter body may be arranged in a housing prior to soaking in acid. The acid may be an organic acid, for example citric acid diluted in water. The filter body may be soaked for between one and three hours, and preferably for about two hours. An acid solution of a pH below six, and preferably below three, may be used. The acid may have a temperature of between 20ºC and 95ºC, and preferably about 60ºC. After soaking the filter body may be dried at a temperature above 100ºC, and preferably at about 150ºC. The filter body may be ceramic, preferably comprising cordierite and/or aluminium titanate.</p> |
