skip to main content

Title: Two-stage production of olefins utilizing a faujasite structure zeolite in hydrogenation stage

A process is disclosed for the production of olefins in two stages. In the first stage, heavy petroleum fractions are hydrogenated in the presence of hydrogen and a hydrogenation catalyst and, in the second stage, the thus-hydrogenated fractions are subjected to thermal cracking the presence of steam. The improvement comprises employing as the hydrogenation catalyst a zeolite of the faujasite structure combined with elements from groups VIB, VIIB and VIII of the periodic table of the elements, wherein the alkali component of the zeolite is exchanged at least partially for ammonium, hydronium, alkaline earth and/or rare earth ions, and the elements are present in a metallic, ionic, oxidic and/or sulfidic form.
Authors:
; ; ; ;
Publication Date:
OSTI Identifier:
5705919
Report Number(s):
US 4188281
Resource Type:
Patent
Resource Relation:
Patent Priority Date: Priority date 12 May 1977, German, Federal Republic of (F.R. Germany); Other Information: PAT-APPL-905486
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; FAUJASITE; CHEMICAL COMPOSITION; HYDROGENATION; CATALYSTS; PETROLEUM FRACTIONS; ALKALINE EARTH METAL COMPOUNDS; ALKENES; AMMONIUM COMPOUNDS; OXONIUM IONS; RARE EARTH COMPOUNDS; THERMAL CRACKING; ZEOLITES; CHARGED PARTICLES; CHEMICAL REACTIONS; CRACKING; DECOMPOSITION; ENERGY SOURCES; FOSSIL FUELS; FUELS; HYDROCARBONS; INORGANIC ION EXCHANGERS; ION EXCHANGE MATERIALS; IONS; MATERIALS; MINERALS; MOLECULAR IONS; ORGANIC COMPOUNDS; PETROLEUM; PYROLYSIS; THERMOCHEMICAL PROCESSES 020400* -- Petroleum-- Processing