Patent US4898660A successfully refreshed from Google Patents.
US4898660A
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Catalytic uses of crystalline metallophosphate compositions
Assignee: Katalistiks International Inc
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Filing: 1983-10-20
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Granted: 1990-02-06
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Expires: 2003-10-20
Abstract
Abstract A novel family of crystalline, microporus aluminophosphate compositions is synthesized by hydrothermal crystallization at elevated temperatures of aluminophosphate gels containing a molecular structure forming template. The family comprises a number of distinct species, each with a unique crystal structure. Calcination removes volatile extraneous matter from the intracrystalline void space and yields microporus crystalline adsorbents with uniform pores, the dimensions of which vary, among the individual species, from about 3A to 10A diameter. The composition exhibit properties somewhat analogous to zeolitic molecular sieves which render them useful as catalysts or catalyst bases in chemical reactions such as hydrocarbon conversions.
Inventors
- 👤 Stephen T. Wilson
- 👤 Brent M. Lok
- 👤 Edith M. Flanigen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:57
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/2206; C07C5/2226; C07C5/224; B; B01; B01D; B01D15/00; B01D53/00; B01D53/26; B01D53/28; B01J; B01J20/00; B01J20/02; B01J20/0203; B01J20/0274; B01J20/0292; B01J20/06; B01J20/08; B01J27/00; B01J27/14; B01J27/16; B01J27/18; B01J29/00; B01J29/82; B01J29/84; C01; C01B; C01B37/00; C01B37/04; C07C2/00; C07C2/54; C07C5/02; C07C5/27; C07C5/2702; C07C5/271; C07C5/2716; C07C2529/00; C07C2529/82; C07C2529/83
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
104 words
Process for converting a hydrocarbon which comprises contacting said hydrocarbon under hydrocarbon converting conditions with an aluminophosphate having a framework structure whose chemical composition expressed in terms of mole ratios of oxides is: Al.sub.2 O.sub.3 :1.0±0.2 P.sub.2 O.sub.5 said framework structure being microporus in which the pores are uniform and have nominal diameters within the range of about 3 to about 10 Angstroms, an intracrystalline adsorption capacity for water at 4.6 torr and 24° C. of at least 3.5 weight percent, the adsorption and desorption of water being completely reversible while retaining the same essential framework toplogy in both the hydrated and dehydrated state.
Claim 2
Dependent Claim
104 words
Process for converting a hydrocarbon which comprises contacting said hydrocarbon under hydrocarbon converting conditions with an aluminophosphate having a framework structure whose chemical composition expressed in terms of mole ratios of oxides is: Al.sub.2 O.sub.3 :1.0±0.2 P.sub.2 O.sub.5 said framework structure being microporus in which the pores are uniform and have nominal diameters within the range of about 3 to about 10 Angstroms, an intracrystalline adsorption capacity for water at 4.6 torr and 24° C. of at least 3.5 weight percent, the adsorption and desorption of water being completely reversible while retaining the same essential framework toplogy in both the hydrated and dehydrated state.
Claim 3
Dependent Claim
12 words
Process according to claim 1 where the hydrocarbon conversion process is cracking.
Claim 4
Dependent Claim
12 words
Process according to claim 1 wherein the hydrocarbon conversion process is hydrocracking.
Claim 5
Dependent Claim
12 words
Process according to claim 1 wherein the hydrocarbon conversion process is hydrogenation.
Claim 6
Dependent Claim
12 words
Process according to claim 1 wherein the hydrocarbon conversion process is polymerization.
Claim 7
Dependent Claim
12 words
Process according to claim 1 wherein the hydrocarbon conversion process is alkylation.
Claim 8
Dependent Claim
12 words
Process according to claim 1 wherein the hydrocarbon conversion process is reforming.
Claim 9
Dependent Claim
12 words
Process according to claim 1 wherein the hydrocarbon conversion process is hydrotreating.
Claim 10
Dependent Claim
12 words
Process according to claim 1 wherein the hydrocarbon conversion process is isomerization.
Claim 11
Dependent Claim
11 words
Process according to claim 9 wherein the isomerization is xylene isomerization.
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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) | 1993-02-05 | 1993-08-07 | 1994-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-05 | 1997-08-07 | 1998-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-05 | 2001-08-07 | 2002-02-06 | $7700.00 | Window Closed / Lapsed |