| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention relates to composition based on gold and reducible oxide, method of its production and its application as catalyst, in particular in carbon monoxide oxidation. Described is composition based on gold on carrier based on reducible oxide, as such composition contains titanium or iron (III) oxide, content of halogen in composition, expressed by molar ratio halogen/gold, constitutes not more than 0.05, content of gold in it constitutes not more than 1%, gold is in form of particles with size not more than 10nm, and composition is subjected to reducing processing. Described is method of composition production, which contains following stages: bringing in contact compound based on reducible titanium or iron (III) oxide and compound based on gold halogenated and, in case of necessity, compound based on silver, with formation of suspension of said compounds, pH of obtained medium being set not lower than 8; separation of solid substance from reaction medium; washing solid substance with alkaline solution; in addition method includes reducing processing after mentioned above washing stage. Described is method of carbon monoxide oxidation, method of air purification and method of cigarette smoke purification using described above composition as catalyst. ^ EFFECT: elaboration of catalysts, efficient at low temperatures and/or high hour volume rates. ^ 16 cl, 12 tbl, 15 ex |
