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CATALYST SUPPORT; CONTAINS SILICA AND AT LEAST ONE COMPONENT SELECTED FROM ALUMINA AND ALUMINIUM PHOSPHATE; USE IN OLEFIN POLYMERISATION
CATALYST SUPPORT; CONTAINS SILICA AND AT LEAST ONE COMPONENT SELECTED FROM ALUMINA AND ALUMINIUM PHOSPHATE; USE IN OLEFIN POLYMERISATION
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机译:催化剂支持;含有二氧化硅,并且至少选自氧化铝和磷酸铝中的一种成分;在烯烃聚合中使用
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摘要
Process for the manufacture of a support containing silica and at least one constituent chosen from alumina and aluminum phosphate, according to which an alcohol, water, a silicon alkoxide and an acid are mixed under conditions such that gelling or precipitation of silica is prevented, an acidic solution of an aluminum compound and/or a solution of a source of phosphate ions are added thereto, a gelling agent is added thereto, a gel is recovered which is washed with water and then by means of an organic liquid, the gel is then dried by atomization until a powder is obtained, and the powder is calcined. Polymerization of olefins in the presence of a catalyst containing chromium on a support as described above.
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