公开(公告)号：US3857921A

公开(公告)日：1974-12-31

申请号：US40067973

申请日：1973-09-25

Applicant: ASAHI CHEMICAL IND

Inventor： TAMURA N ,  SUGA K ,  MITSUI R ,  WATANABE S

IPC: B01D53/94 ,  B01J23/76 ,  B01J23/89 ,  B01J27/043 ,  B01D53/34

CPC classification number: B01D53/945 ,  B01J23/76 ,  B01J23/8906 ,  B01J27/043 ,  Y02A50/2324 ,  Y02T10/22

Abstract: Toxic substances contained in exhaust gases, especially nitrogen oxides contained in exhaust gases from automobiles, can be effectively eliminated, even in the presence of oxygen, by contacting such exhaust gases with a catalyst composition comprising iron or iron oxide, silver or silver oxide, at least a member selected from the group consisting of copper, beryllium, zinc, lead, indium, lanthanum, cerium and oxides of these metals, and a carrier. Especially good results can be obtained by employing a catalyst composition obtained by treating a composition comprising iron or iron oxide, silver or silver oxide, copper or copper oxide and a carrier with hydrogen sulfide, or by employing a catalyst composition comprising sulfides of iron, silver and copper supported on a carrier.

Abstract translation: 通过使这些废气与包含铁或氧化铁，银或氧化银的催化剂组合物接触，即使在氧的存在下，也可以有效地消除废气中所含的废气中的有害物质，特别是汽车排气中所含的氮氧化物， 至少一种选自铜，铍，锌，铅，铟，镧，铈和这些金属的氧化物的成员和载体。 通过使用通过用含有铁或氧化铁，银或氧化银，铜或氧化铜和载体的硫化氢处理的组合物或通过使用包含铁，银，硫化物的催化剂组合物获得的催化剂组合物，可以获得特别好的结果 和铜支撑在载体上。