Solutions and Catalysts Comprising Group VI Metal, Group VIII Metal, and Phosphorus

摘要

This invention provides a catalyst formed by bringing together, in an aqueous medium, at least one phosphorus compound, at least one Group VI metal compound, at least one Group VIII metal compound, and an additive which is
a) tetraethylene glycol,b) polyethylene glycol having an average molecular weight in the range of about 200 to about 400,c) a mixture of tetraethylene glycol and polyethylene glycol having an average molecular weight in the range of about 200 to about 400, ord) a mixture of (1) tetraethylene glycol and/or polyethylene glycol having an average molecular weight in the range of about 200 to about 400 and (2) one or more of monoethylene glycol, diethylene glycol, and triethylene glycol,forming an impregnated carrier; and

drying the impregnated carrier. The molar ratio of additive to the total moles of Group VI metal and Group VIII metal is about 0.36:1 to about 0.6:1.

主权项

1. A catalyst composition formed by
I) bringing together a carrier and an impregnation solution, which impregnation solution comprises a Group VI metal, a Group VIII metal, phosphorus, and an additive which is
a) tetraethylene glycol,b) polyethylene glycol having an average molecular weight in the range of about 200 to about 400,c) a mixture of tetraethylene glycol and polyethylene glycol having an average molecular weight in the range of about 200 to about 400, ord) a mixture of (1) tetraethylene glycol and/or polyethylene glycol having an average molecular weight in the range of about 200 to about 400 and (2) one or more of monoethylene glycol, diethylene glycol, and triethylene glycol,where the molar ratio of additive to the total moles of Group VI metal and Group VIII metal is about 0.36:1 to about 0.6:1, and where the atomic ratio of phosphorus to Group VI metal is at least about 0.33:1,to form an impregnated carrier; and II) drying the impregnated carrier, and III) optionally calcining the impregnated carrier, and optionally sulfiding the catalyst.