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US4705674A Expired / Lapsed US ⏱️ 0.0 years remaining

Synthesis of zeolite EU-13 from a reaction mixture containing tetramethylammonium compound

Assignee: Imperial Chemical Industries Ltd
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Filing: 1985-12-05
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Granted: 1987-11-10
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Expires: 2005-12-05
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Abstract

Abstract A new zeolite material designated EU-13 has a molar composition expressed by the formula: 0.8 to 3.0 R2O: Y2O3: at least 10 XO2: 0 to 2000 H2 wherein R is a monovalent cation or (1/n) of a cation of valency n, X is silicon and/or germanium, Y is one or more of aluminium, iron, chromium, vanadium, molybdenum, arsenic, antimony, manganese, gallium or boron and H2O is water of hydration additional to water notionally present when R is H, and having an X-ray powder diffraction pattern substantially as set out in Table 1. The zeolite material is prepared from a reaction mixture containing XO2 (preferably silica), Y2O3 (preferably alumina) and a methylated quaternary ammonium or phosphonium compound, most preferably a tetramethylammonium compound.

Inventors

  • 👤 Abraham Araya
  • 👤 Barrie M. Lowe

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 10:42
CPC Classifications
C; C01; C01B; C01B39/00; C01B39/02; C01B39/46; C01B39/48; C01G; C01G17/00

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 245 words
A method of making a crystalline zeolite material, designated EU-13 having a molar composition (in terms of mole ratios of oxides) expressed by the formula: 0.8 to 3.0 R 2 O:Y 2 O 3 :at least 10 XO 2 :0 to 2000 H 2 O wherein R is a monovalent cation or (1/n) of a cation of valency n, X is silicon and/or germanium, Y is one or more of aluminium, iron, chromium, vanadium, molybdenum, arsenic, antimony, manganese, gallium or boron and H 2 O is water of hydration additional to water notionally present when R is H, and having an X-ray powder diffraction pattern as set out in Table 1 (as determined by standard technique using copper Kα radiation) and as shown in FIG. 1, which comprises reacting an aqueous mixture containing sources of at least one oxide XO 2 , at least one oxide Y 2 O 3 and a tetramethylammonium compound, the reaction mixture having the molar composition: XO 2 /Y 2 O 3 in the range 20 to 120 M 1 OH/XO 2 in the range 0.04 to 1.0 H 2 O/XO 2 in the range 10 to 100 A/XO 2 in the range 0.01 to 0.5 M 2 Z/XO 2 in the range 0 to 0.5 wherein each of M 1 and M 2 represents an alkali metal selected from potassium, rubidium, lithium and caesium, ammonium or hydrogen, A represents the tetramethylammonium compound and Z represents a strong acid radical.
Claim 2
Independent Claim 245 words
A method of making a crystalline zeolite material, designated EU-13 having a molar composition (in terms of mole ratios of oxides) expressed by the formula: 0.8 to 3.0 R 2 O:Y 2 O 3 :at least 10 XO 2 :0 to 2000 H 2 O wherein R is a monovalent cation or (1/n) of a cation of valency n, X is silicon and/or germanium, Y is one or more of aluminium, iron, chromium, vanadium, molybdenum, arsenic, antimony, manganese, gallium or boron and H 2 O is water of hydration additional to water notionally present when R is H, and having an X-ray powder diffraction pattern as set out in Table 1 (as determined by standard technique using copper Kα radiation) and as shown in FIG. 1, which comprises reacting an aqueous mixture containing sources of at least one oxide XO 2 , at least one oxide Y 2 O 3 and a tetramethylammonium compound, the reaction mixture having the molar composition: XO 2 /Y 2 O 3 in the range 20 to 120 M 1 OH/XO 2 in the range 0.04 to 1.0 H 2 O/XO 2 in the range 10 to 100 A/XO 2 in the range 0.01 to 0.5 M 2 Z/XO 2 in the range 0 to 0.5 wherein each of M 1 and M 2 represents an alkali metal selected from potassium, rubidium, lithium and caesium, ammonium or hydrogen, A represents the tetramethylammonium compound and Z represents a strong acid radical.
Claim 3
Dependent Claim 71 words
A method as claimed in claim 1 wherein the reaction mixture has a molar composition in which XO 2 /Y 2 O 3 is in the range 20 to 120 M 1 OH/XO 2 is in the range 0.1 to 0.65 H 2 O/XO 2 is in the range 20 to 75 A/XO 2 in the range 0.02 to 0.25 M 2 Z/XO 2 is in the range 0 to 0.3.
Claim 4
Dependent Claim 17 words
A method as claimed in claim 1 in which the tetramethylammonium compound is tetramethylammonium hydroxide or bromide.
Claim 5
Dependent Claim 26 words
A method as claimed in claim 1 in which M 1 , and M 2 if present, is/are at least one of potassium, lithium and rubidium.
Claim 6
Independent Claim 135 words
A method of making the crystalline zeolitic material designated EU-13 which comprises reacting an aqueous mixture containing sources of at least one oxide XO 2 , at least one oxide Y 2 O 3 and a tetramethylammonium compound, the reaction mixture having the molar composition: XO 2 /Y 2 O 3 in the range 20 to 120 M 1 OH/XO 2 in the range 0.04 to 1.0 H 2 O/XO 2 in the range 10 to 100 A/XO 2 in the range 0.01 to 0.5 M 2 Z/XO 2 in the range 0 to 0.5 wherein M 1 and M 2 represent rubidium, A represents tetramethylammonium, X is silicon and/or germanium, Y is one or more of aluminium, iron, chromium, vanadium, molybdenum, arsenic, antimony, manganese, gallium and boron and Z represents a strong acid radical.
Claim 7
Independent Claim 135 words
A method of making the crystalline zeolitic material designated EU-13 which comprises reacting an aqueous mixture containing sources of at least one oxide XO 2 , at least one oxide Y 2 O 3 and a tetramethylammonium compound, the reaction mixture having the molar composition: XO 2 /Y 2 O 3 in the range 20 to 120 M 1 OH/XO 2 in the range 0.04 to 1.0 H 2 O/XO 2 in the range 10 to 100 A/XO 2 in the range 0.01 to 0.5 M 2 Z/XO 2 in the range 0 to 0.5 wherein M 1 and M 2 represent rubidium, A represents tetramethylammonium, X is silicon and/or germanium, Y is one or more of aluminium, iron, chromium, vanadium, molybdenum, arsenic, antimony, manganese, gallium and boron and Z represents a strong acid radical.

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-11-09 1991-05-11 1991-11-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-11-09 1995-05-11 1995-11-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-11-09 1999-05-11 1999-11-10 $7700.00 Window Closed / Lapsed

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