PREPARATION METHOD OF CHROMIUM-SILICA CATALYST FOR POLYMERISATION

PREPARATION METHOD OF CHROMIUM-SILICA CATALYST FOR POLYMERISATION

A method comprising calcining a catalyst precursor comprising chromium and a silica support material at a temperature in the range of from about 95 ?C to about 400 ?C in a bed fluidized by a gas flowing at a volumetric flow rate of from about 2.5 to about 30 times the settled volume of the bed per m...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: SCHWERDTFEGER, Eric D, CLEAR, Kathy S, CYMBALUK, Ted H, SOLENBERGER, Alan L, MCDANIEL, Max P, PRAETORIUS, Jeremy M
Format: Patent
Sprache:eng
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A method comprising calcining a catalyst precursor comprising chromium and a silica support material at a temperature in the range of from about 95 ?C to about 400 ?C in a bed fluidized by a gas flowing at a volumetric flow rate of from about 2.5 to about 30 times the settled volume of the bed per minute to form a calcined catalyst precursor. A method comprising calcining a catalyst precursor comprising chromium and silica at a temperature in the range of from about 95 ?C to about 400 ?C with a gas flowing through the bed at a gas hourly space velocity of from about 15 to about 200 per hour. A method comprising calcining a catalyst precursor comprising chromium and silica at a temperature in the range of from about 95 ?C to about 400 ?C with a gas flowing through the bed at a weight hourly space velocity of from about 1.9 to about 240 per hour.