| 摘要 |
FIELD: chemistry.SUBSTANCE: catalyst comprises a support which is prepared using high-silica zeolite KL and boehmite, and the catalytically active substance is both platinum crystallites immobilised on the surface of the catalyst and platinum particles localised inside the zeolite channel, having size of 0.6-1.2 nm. The boehmite particles have a size of no more than 45 mcm. The zeolite particles have size of no more than 0.2 mm. The ingredients are in the following ratios (wt %): platinum - 0.3-0.8; boehmite - 19.9-59.5; zeolite KL - 79.8-39.7. The catalyst may further include an oxide and/or metal promoter selected from: Sn, In, Ir, Re, Ba. The group of inventions also includes methods of producing catalysts, which include preparing a granular support based on zeolite and aluminium hydroxide and depositing platinum on the support.EFFECT: improved catalyst.4 cl, 1 tbl, 6 ex |
