FIELD: process engineering.
SUBSTANCE: invention relates to vanadium-free catalyst for reduction of aluminium oxides by ammonium or compound decomposing thereto. It relates also to activation of homogeneous mixed cerium and zirconium oxides for nitrogen oxide reduction. Proposed catalyst comprises catalytically active coat applied on inner carries body. Note here that said coat consists, partially or completely, of homogeneous mixed cerium and zirconium oxides with cerium amount varying from 10 wt % to 90 wt % per total weight of said mix, activated for reduction by introducing transition metal. Transition metal is selected from the group including chromium, molybdenum and mixes of said transition metals or combinations thereof.
EFFECT: high-activity, vanadium-free, cheap and effective reduction catalyst.
19 cl, 9 dwg, 1 tbl, 13 ex
| Title | Year | Author | Number |
|---|---|---|---|
| SYSTEM FOR DECREASING TOXICITY OF ENGINE OFFGAS USING SELECTIVE CATALYTIC REDUCTION CATALYST | 2009 |
|
RU2497577C2 |
| CATALYST FOR REMOVING NITROGEN OXIDES FROM EXHAUST GASES OF DIESEL ENGINES | 2011 |
|
RU2584748C2 |
| IMPROVED OXIDATIVE CATALYTIC NEUTRALISER FOR REDUCING TOXICITY OF DIESEL ENGINE EXHAUST GASES | 2009 |
|
RU2559502C2 |
| SELECTIVE CATALYTIC REDUCTION CATALYST WITH IMPROVED RESISTANCE TO HYDROCARBONS | 2012 |
|
RU2599849C2 |
| DEVICE FOR DECREASING DIESEL ENGINE EXHAUST TOXICITY | 2008 |
|
RU2479341C2 |
| OXIDATION CATALYST FOR DIESEL ENGINE-FITTED VEHICLES FOR TRANSPORTING PASSENGERS, GOODS AND FOR NON-TRANSPORTATION WORK | 2009 |
|
RU2489206C2 |
| CATALYTICALLY ACTIVATED FILTER TO FILTRATE HARD PARTICLES FROM SPENT GASES OF DIESEL ENGINE HAVING AMMONIA-RETAINING ACTION | 2008 |
|
RU2449135C2 |
| METHODS OF SELECTIVE CATALYTIC RECOVERY WITH USE OF DOPED CERIA (IV) OXIDES | 2014 |
|
RU2664905C2 |
| DEVICE FOR AND METHOD OF PROCESSING OF WASTE GASES FORMED WHEN ENGINE OPERATES ON LEAN MIXTURES BY SELECTIVE CATALYTIC REDUCTION OF NITROGEN OXIDES | 2001 |
|
RU2278281C2 |
| SELECTIVE CATALYTIC REDUCTION CATALYST | 2014 |
|
RU2666722C1 |
