Process for preparing wide pore alumina supports.

摘要

A process for preparing a high surface area, wide-pore containing, porous alumina which comprises:

  a) mulling an alpha alumina monohydrate with water and a peptizing agent,
  b) separately preparing an alumina hydrogel by precipitating an aqueous solution of an acidic aluminium salt excepting aluminium sulphate with a basic precipitating agent,
  c) mulling together the hydrogel of step b) and the mulled alumina of step a) wherein the amount of hydrogel calculated as Al2O3, ranges from 1 to 50% by weight on the total amount of Al2O3.
  d) extruding the mixture of c),
  e) drying the extrudate, and
  f) calcining at a temperature ranging from 500 to 700 DEG C.