Title: EFFECT OF CALCIUM ON FCC CATALYST AND STUDY ON CALCIUM-TOLERANT ADDDITIVES
Abstract:Both calcium naphthenate and calcium nitrate showed some effects on FCC catalyst activity and crystallinity of molecular seives,especially when calcium content of catalyst was higher than 1 6%,and the...Both calcium naphthenate and calcium nitrate showed some effects on FCC catalyst activity and crystallinity of molecular seives,especially when calcium content of catalyst was higher than 1 6%,and the influence of calcium naphthenate was less than that of calcium nitrate.Calcium sulfate was found in equilibrium catalysts and agglomerated catalysts.Phosphorous containing compounds and zirconium containing compounds showed some certain tolerance to calcium.XRD profiles show that the structure of phosphorous containing compound PA is aluminum phosphate,that of PO is γ Al 2O 3.Both PA and PO can react with calcium nitrate to form calcium hydroxylapatite,thus to alleviate the poisoning of calcium compounds on activity of FCC catalysts.Read More
Publication Year: 2000
Publication Date: 2000-01-01
Language: en
Type: article
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