Invention Grant
- Patent Title: Method of decomposing nitrogen dioxide
- Patent Title (中): 二氧化氮分解方法
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Application No.: US10553490Application Date: 2004-04-19
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Publication No.: US08092767B2Publication Date: 2012-01-10
- Inventor: Stephen David Pollington , Raj Rao Rajaram , Andrew Peter Walker
- Applicant: Stephen David Pollington , Raj Rao Rajaram , Andrew Peter Walker
- Applicant Address: GB London
- Assignee: Johnson Matthey Public Limited Company
- Current Assignee: Johnson Matthey Public Limited Company
- Current Assignee Address: GB London
- Agent Kevin M. Carroll
- Priority: GB0308944.8 20030417; GB0318982.6 20030813
- International Application: PCT/GB2004/001680 WO 20040419
- International Announcement: WO2004/094045 WO 20041104
- Main IPC: B01D53/56
- IPC: B01D53/56 ; B01D53/94 ; C01B21/00
Abstract:
A method of decomposing nitrogen dioxide to nitrogen monoxide in an exhaust gas of a lean-burn internal combustion engine, such as a diesel engine, comprises adjusting the C1 hydrocarbon:nitrogen oxides (C1 HC:NOx) ratio of the exhaust gas to from 0.1 to 2 and contacting this exhaust gas mixture with a particulate acidic refractory oxide selected from the group consisting of zeolites, tungsten-doped titania, silica-titania, zirconia-titania, gamma-alumina, amorphous silica-alumina and mixtures of any two or more thereof and passing the effluent gas to atmosphere.
Public/Granted literature
- US20060263285A1 Method of decomposing nitrogen dioxide Public/Granted day:2006-11-23
Information query
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