CATALYST FOR DEHYDRATION OF PARAFFIN HYDROCARBONS AND METHOD OF ITS APPLICATION Russian patent published in 2011 - IPC B01J23/26 B01J21/04 B01J23/02 B01J23/745 B01J21/10 C07C5/333 

FIELD: process engineering.

SUBSTANCE: invention relates to chemical and petrochemical industries and may be used for heterogeneous-catalytic reactions, in particular, dehydration of paraffin hydrocarbons. Proposed catalyst comprises aluminium oxide the precursor of which is the product of thermochemical activation of hydrargillite, chromium oxide, alkaline metal oxide, and is formed in thermochemical activation of hydrargillite together with compounds of chromium and alkaline metal. Note here that catalyst comprises oxides of iron, calcium and magnesium in weight ratio Fe:Ca:Mg (in terms of oxides) equal to 0.3:1.0:0.1, formed in thermochemical activation from compounds of iron, calcium and magnesium in the following ratio of components in wt % (in terms of oxides): chromium oxide (in terms of Cr₂O₃) - 10.0-16.0, alkaline metal oxide - 1.2-2.0, sum of oxides of iron, calcium and magnesium - 0.05-1.5, aluminium oxide making the rest. Invention covers also method of using described catalyst for dehydration of paraffin hydrocarbons wherein mix of said catalyst with fluoaluminic catalyst "ИМ"-2201 of the following composition (in wt %) is used: chromium oxide - 13.0-14.3; alkaline metal oxide - 2.8-3.3; silicon oxide - 9.5-10.5; sum of oxides of iron, calcium and magnesium - 1.2, aluminium oxide making the rest in ratio of 1:9 to 1:1, respectively.

EFFECT: higher strength and selectivity, high yield of olefins.

2 cl, 3 tbl, 10 ex