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Rare earth-containing high-silica zeolite having penta-sil type structure and process for the same

  • US 5,232,675 A
  • Filed: 01/14/1992
  • Issued: 08/03/1993
  • Est. Priority Date: 02/28/1991
  • Status: Expired due to Term
First Claim
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1. A synthetic crystalline aluminosilicate zeolite having an anhydrous chemical composition (based on moles of oxides) of formula:

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    space="preserve" listing-type="equation">xRE.sub.2 O.sub.3 yNa.sub.2 OAl.sub.2 O.sub.3 zSIO.sub.2whereinx=0.01-0.30, y=0.4-1.0, z=20-60;

    said zeolite having the structure of a pentasil and a X-ray diffraction pattern listed in Table 1, and its normal hexane adsorption/cyclohexane adsorption ratio being 2-4 times higher than that of H-ZSM-5 zeolite.

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