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process for modifying a phosphorus fcc zeolite catalyst and a phosphorus modified catalyst
process for modifying a phosphorus fcc zeolite catalyst and a phosphorus modified catalyst
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机译:磷FCC沸石催化剂的改性方法及磷改性催化剂
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摘要
A phosphorus modification of an FCC catalyst is provided by reducing the sodium content of the as formed catalyst, a first treatment with a phosphate solution, a second ammonium exchange to further reduce the sodium content of the phosphorus solution treated catalyst and a second treatment with a phosphate solution.
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