catalyst for the production of kohlenwasserstoffeinsu00e4tzen kru00e4cken leichtolefinen and manufacture of catalysts

摘要

Provided herein are monocomponent and hybrid catalyst compositions for use in steam-cracking of hydrocarbon feeds to selectively produce light olefins. The catalyst compositions being characterized by a first catalytic component comprising oxides of aluminum, silicon, chromium, and optionally, oxides of monovalent alkaline metals, and further comprising a binder, preferably bentonite clay. Preferably, the catalyst compositions will comprise a catalytic component in accordance with the following formula: (a) SiOSUB2/SUB.(b) A1SUB2/SUBOSUB3/SUB.(c) CrSUB2/SUBOSUB3/SUB(d) alkSUB2/SUBO, with alk being a monovalent alkaline metal, preferably selected from sodium, potassium and lithium. The second catalytic component is selected from a crystalline zeolite or a silica molecular sieve. Also provided in the present invention are methods of making the catalyst compositions.