Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Patent
1984-07-02
1985-10-15
Konopka, P. E.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
502210, 526105, 526106, 526129, 526134, 526156, 526352, C08F 402, C08F 424, C08F 462, B01J 2718
Patent
active
045474796
ABSTRACT:
A catalyst support based on aluminum polyphosphate or polyphosphoric acid-impregnated alumina is provided by two alternative techniques. In the first embodiment, an aluminum polyphosphate composition is heated in a dry atmosphere and thereafter impregnated with a zerovalent chromium component under anhydrous conditions. The resulting catalyst is active for olefin polymerization. In the second embodiment, alumina is impregnated with a polyphosphoric acid composition. This resulting polyphosphoric acid impregnated alumina can be used as a support for zerovalent chromium or can be impregnated with a chromium component and oxidized to give an active hexavalent chromium species. The resulting catalysts are advantageous because of their unusual sensitivity to hydrogen thus allowing great leeway in molecular weight control.
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patent: 4364842 (1982-12-01), McDaniel et al.
patent: 4397765 (1983-08-01), McDaniel
Johnson Marvin M.
McDaniel Max P.
Konopka P. E.
Phillips Petroleum Company
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