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US4478806A Expired / Lapsed US ⏱️ 0.0 years remaining

Crystalline aluminosilicates

Assignee: BP PLC
•
Filing: 1982-11-22
•
Granted: 1984-10-23
•
Expires: 2002-11-22
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Abstract

Abstract The invention relates to a method for preparing a crystalline aluminosilicate having a high silica to alumina molar ratio and an X-ray diffraction pattern substantially the same as that of ZSM-5 zeolite which method comprises mixing a source of silica, a source of alumina, a source of alkali metal, water and at least one alkanolamine according to Formula (I): ##STR1## wherein any two of R 1 , R 2 and R 3 are independently alkylol groups and the remaining one of R 1 , R 2 and R 3 is a hydrogen atom or all of R 1 , R 2 and R 3 are independently alkylol group, the alkylol groups being --CH 2 --R--OH, wherein R is --CH 2 --, --CH 2 CH 2 --, or --CH(CH 3 )--, the ratio of said source of silica to said source of alumina being at least 20:1 based on the equivalent moles of silica and alumina in said respective sources, maintaining said mixture at a temperature above about 120° C. and recovering the crystalline aluminosilicate formed.

Inventors

  • 👤 William J. Ball
  • 👤 Keith W. Palmer
  • 👤 David G. Stewart

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 12:10
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C01B33/2876; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/061; B01J29/40; B01J35/00; B01J35/70; B01J2229/00; B01J2229/30; B01J2229/42; B01J2235/00; B01J2235/15; Y; Y02; Y02P; Y02P30/00; Y02P30/20; Y02P30/40; Y10; Y10S; Y10S423/00; Y10S423/22

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 45 words
A crystalline aluminosilicate having a high silica to alumina molar ratio and an X-ray diffraction pattern substantially the same as ZSM- 5 zeolite which does not contain organic nitrogen cations as prepared and which after calcination has the Raman spectrum as shown in FIG. 2.
Claim 2
Dependent Claim 45 words
A crystalline aluminosilicate having a high silica to alumina molar ratio and an X-ray diffraction pattern substantially the same as ZSM- 5 zeolite which does not contain organic nitrogen cations as prepared and which after calcination has the Raman spectrum as shown in FIG. 2.

References Cited (Backward Citations)

US3130007A Cited
DE1955095A1 Cited
US3702886A Cited
GB1365318A Cited
US4151189A Cited
US4175114A Cited
US4275047A Cited
US4089929A Cited
DE2746844A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-10-23 1988-04-23 1988-10-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-10-23 1992-04-23 1992-10-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-10-23 1996-04-23 1996-10-23 $7700.00 Window Closed / Lapsed

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