Unsupported catalysts in the production of olefins

Details Unsupported catalysts in the production of olefins Unsupported catalysts in the production of olefins

1978-05-12

1980-07-01

Crasanakis, George

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208143, C10G 3706, C10G 2302

Patent

active

042105200

ABSTRACT:
In a process for the production of olefins in two stages wherein, 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 in the presence of steam, the improvement which comprises employing as the hydrogenation catalyst a support-free catalyst consisting essentially of elements from Groups VIb, VIIB, and VIII of the periodic table of the elements in the form of the metals, metal oxides, metal sulfides, or organometal complexes, or mixtures thereof.

REFERENCES:
patent: 1932174 (1933-10-01), Gaus et al.
patent: 2093843 (1937-09-01), McKee
patent: 2282451 (1942-05-01), Brooks
patent: 3663431 (1972-05-01), Wagner
patent: 4097362 (1978-06-01), McKinney et al.
"Steam Cracking," Modern Petroleum Technology, 3rd ed., p. 318, published by Institute of Petroleum, London (1962).

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