METHOD FOR CATALYTIC CHLORINATION OF LOWER ALKANES FOR VALUE PRODUCT MANUFACTURING Russian patent published in 2005 - IPC

FIELD: chemical industry, in particular method for production of value products from lower alkanes.

SUBSTANCE: claimed method includes passing of gaseous reaction mixture containing at least one lower alkane and elementary chlorine through catalytic layer. Used catalyst represents geometrically structured system comprising microfiber with diameter of 5-20 mum. Catalyst has active centers having in IR-spectra of adsorbed ammonia absorption band with wave numbers in region of ν = 1410-1440 cm^-1, and contains one platinum group metal as active component, and glass-fiber carrier. Carrier has in NMR²⁹Si-specrum lines with chemical shifts of -100±3 ppm (Q³-line) and -110±3 ppm (Q⁴-line) in integral intensity ratio Q³/Q⁴ from 0.7 to 1.2; in IR-specrum it has absorption band of hydroxyls with wave number of ν = 3620-3650 cm^-1 and half-width of 65-75 cm^-1, and has density, measured by BET-method using argon thermal desorption, S_Ar = 0.5-30 m²/g, and specific surface, measured by alkali titration, S_Na = 10-250 m²/g in ratio of S_Ar/S_Na = 5-30.

EFFECT: method of increased yield.

3 cl, 4 ex