JP6627225B2 - NOx選択還元触媒の劣化方法 - Google Patents
NOx選択還元触媒の劣化方法 Download PDFInfo
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- JP6627225B2 JP6627225B2 JP2015030325A JP2015030325A JP6627225B2 JP 6627225 B2 JP6627225 B2 JP 6627225B2 JP 2015030325 A JP2015030325 A JP 2015030325A JP 2015030325 A JP2015030325 A JP 2015030325A JP 6627225 B2 JP6627225 B2 JP 6627225B2
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- Prior art keywords
- selective reduction
- reduction catalyst
- nox selective
- nox
- catalyst
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Description
(NH2)2CO+H2O→2NH3+CO2・・・(1)
2NH3+NO+NO2→2N2+3H2O・・・(2)
4NO+4NH3+O2→4N2+6H2O・・・(3)
6NO+8NH3→7N2+12H2O・・・(4)
2 内燃機関
3 吸気通路
4 排気通路
5 NOx選択還元触媒
6 噴射部
20 溶液
Claims (1)
- 内燃機関の排気中のNOxを選択的に還元するNOx選択還元触媒を劣化させる方法であって、
リン酸水素二ナトリウム・12水の濃度が3重量%〜7重量%である水溶液が入れられた容器の底部に前記NOx選択還元触媒を配置し、前記容器の内部で前記NOx選択還元触媒を所定時間毎にひっくり返しながら前記NOx選択還元触媒を合計で30分間、前記水溶液に浸漬することで、前記NOx選択還元触媒をリン被毒させるリン被毒工程を含むことを特徴とするNOx選択還元触媒の劣化方法。
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JP2015030325A JP6627225B2 (ja) | 2015-02-19 | 2015-02-19 | NOx選択還元触媒の劣化方法 |
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JP2016150327A JP2016150327A (ja) | 2016-08-22 |
JP6627225B2 true JP6627225B2 (ja) | 2020-01-08 |
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Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2897367B2 (ja) * | 1990-01-12 | 1999-05-31 | 日本特殊陶業株式会社 | 被毒防止体、被毒防止層付触媒及び排気ガス浄化装置 |
JP2865165B2 (ja) * | 1995-12-28 | 1999-03-08 | 株式会社日本触媒 | フエノール類のアルキルエーテルの製造方法及び該方法で使用される触媒 |
JP3639164B2 (ja) * | 1999-12-02 | 2005-04-20 | ダイハツ工業株式会社 | 排気ガス浄化用触媒の劣化方法 |
JP3881162B2 (ja) * | 2000-07-12 | 2007-02-14 | 触媒化成工業株式会社 | 水素化処理成形触媒およびその製造方法 |
JP5604235B2 (ja) * | 2010-09-07 | 2014-10-08 | バブコック日立株式会社 | 排ガス脱硝触媒およびその製造方法 |
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- 2015-02-19 JP JP2015030325A patent/JP6627225B2/ja active Active
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