Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1991-06-14
1993-08-03
Morris, Theodore
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208118, 208119, C10G 1102, C10G 1104
Patent
active
052325792
ABSTRACT:
A catalytic cracking process for converting a hydrocarbon fraction, preferably boiling in the range of a heavy gas oil, is disclosed in which the cracking catalyst is a large crystal fully crystalline zeolite Beta having a broad range of silica-to-alumina mole ratios, i.e. 20->1000. The zeolite Beta catalyst is synthesized with a nitrogenous organic chelating agent, such as a tertiary alkanolamine, preferably triethanolamine, in the synthesis mixture along with at least one source of organic directing agent such as tetraethylammonium hydroxide, tetraethylammonium bromide and tetraethylammonium fluoride. The zeolite Beta can be used as a stand alone catalyst or an additive catalyst for hydrocarbon cracking reactions along with another molecular seive type catalyst such as a faujasite catalyst or ZSM-5. The large crystal zeolite Beta can also be treated with a source of phosphorus to enhance the properties of the zeolite.
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Absil Robert P. L.
Herbst Joseph A.
Kowalski Jocelyn A.
Rubin Mae K.
Griffin Walter D.
Keen Malcolm D.
McKillop Alexander J.
Mobil Oil Corporation
Morris Theodore
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