CATALYST AND CATALYTIC SYSTEM FOR N-BUTANE DEHYDROISOMERIZATION AND ISOBUTENE PRODUCTION METHOD Russian patent published in 1995 - IPC

FIELD: chemical industry. SUBSTANCE: catalyst has 0.1 1.0 mass of platinum and solid granulated porous carrier aluminum gamma-oxide with special surface of 100-420 m²/g and total volume of pores 0.5 1.5 ml/g in the form of granules of 0.4 5 mm size with deposited on its surface silicon dioxide in amount of 0.5 - 5 mass it is preferable to have it of 1.0 2.5 mass It is preferable, that catalyst has tin in amount of 0.1 -1.0 mass and indium in amount of 0.501.0 mass Platinum and tin masses ratio is (0.5 2.0) 1. Catalytic system has catalyst of the composition and cocatalyst, that is porous aluminum gamma-oxide with deposited on its surface of 0.5 5.0 mass of silicon dioxide under catalyst and cocatalyst masses ratio from 20 80 to 80 20. It is preferable to have the ratio of 70 30. Catalytic system has catalyst of described composition and cocatalyst boralyte B, that in waterless and calcined state has following molar composition C_2/nO B₂O₃(5-50)SiO₂,, with C-cation of metal of valence n^_,H⁺,NH+4

or their mixture. In the case, masses ratio of catalyst and cocatalyst is from 20 80 to 80 20, it is preferable to have 70 30. N-butane under temperature of 450 600 C contacts movable layer of catalytic system in presence of hydrogen with molar ratio of N-butane hydrogen from 1 1 to 5 1, pressure from 200 mm of mercury column to 5 kg/cm² and volumetric speed of N-butane 0.50 5 s. EFFECT: catalyst and catalytic system for N-butane dehydroisomerization and isobutene production method are used in chemical industry. 21 cl, 1 tbl