Method for oxidizing carbonaceous material diesel particulate filter and exhaust gas system

A diesel particulate filter for receiving diesel exhaust gas from a diesel engine, the disel particulate filter comprising:

• a catalytic material of formula AxMyWOz,
• wherein:
• A is at least one of cesium and potassium;
• M is different from A and is at least one of cesium, potassium, magnesium, calcium, strontium, barium, iron, cobalt, nickel, ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, gold, yttrum, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, and bismuth;
• 0≦x≦1;
• 0≦y≦1;
• 2.2≦z≦3;
• when x=0, y>0;
• and
• when y=0, x>0.

An exhaust gas system, comprising:

• a diesel particulate filter for receiving diesel exhaust gas from the diesel engine, wherein the disel particulate filter comprises:
• a catalytic material of formula AxMyWOz,
• wherein:
• A is at least one of cesium and potassium;
• M is different from A and is at least one of cesium, potassium, magnesium, calcium, strontium, barium, iron, cobalt, nickel, ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, gold, yttrum, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, and bismuth;
• 0≦x≦1;
• 0≦y≦1;
• 2.2≦z≦3;
• when x=0, y>0;
• and
• when y=0, x>0.