FIELD: chemistry.
SUBSTANCE: invention relates to a catalyst composition containing platinum (hereinafter – Pt) nanoparticles and inorganic oxide, in which Pt nanoparticles contain no more than 100 Pt atoms. At the same time, Pt nanoparticles have an average particle size from 1 to 3 nm, measured using TEM or by CO pulse method with mean square deviation (MSD) of no more than 1 nm, and Pt nanoparticles have an average particle size of no more than 50 nm after aging at 1000°C during 4 h, wherein the average particle size is measured, using TEM.
EFFECT: proposed composition containing platinum clusters-nanoparticles has improved thermostability indicators.
13 cl, 17 dwg, 7 tbl, 9 ex
| Title | Year | Author | Number |
|---|---|---|---|
| CATALYST FOR EXHAUST GAS PURIFICATION | 2018 |
|
RU2790008C2 |
| NEW CATALYTIC TWC NEUTRALIZERS BASED ON PGM NANOPARTICLES FOR USE WITH SPENT PETROL GAS | 2019 |
|
RU2782922C2 |
| CATALYST FOR NEUTRALIZING EXHAUST GASES FROM DIESEL ENGINES AND A METHOD FOR PREPARATION THEREOF | 2001 |
|
RU2259228C2 |
| EXHAUST GAS CLEANING CATALYST AND METHOD OF ITS PRODUCTION | 2010 |
|
RU2515542C2 |
| SYNTHETIC ZEOLITE CONTAINING CATALYTIC METAL | 2017 |
|
RU2740186C2 |
| METHOD TO PREPARE CATALYST FOR DETOXICATION OF EXHAUST GASES (VERSIONS) | 2008 |
|
RU2388532C1 |
| CATALYST FOR CLEANING EXHAUST GASES, METHOD OF REGENERATING SAID CATALYST, AS WELL AS DEVICE AND METHOD OF CLEANING EXHAUST GASES USING SAID CATALYST | 2006 |
|
RU2395341C1 |
| METHOD FOR PRODUCING A PLATINUM ELECTRIC CATALYST ON CARBON | 2016 |
|
RU2646761C2 |
| EXHAUST SYSTEM FOR AN ENGINE WITH COMPRESSION IGNITION HAVING A GRIPPING REGION FOR EVAPORATING PLATINUM | 2016 |
|
RU2730511C2 |
| NO ACCUMULATING COMPONENT | 2011 |
|
RU2601457C2 |
