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US5256277A
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Paraffin isomerization process utilizing a catalyst comprising a mesoporous crystalline material
Assignee: Mobil Oil AS
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Filing: 1991-07-24
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Granted: 1993-10-26
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Expires: 2011-07-24
Abstract
Abstract Paraffins, especially paraffins in the C4-C8 range, are isomerized to iso-paraffins over an isomerization catalyst comprising a noble metal such as platinum on a support material comprising an inorganic, non-layered, porous, crystalline phase aluminosilicate material with pores of at least 13 ANGSTROM and which exhibits, after calcination, an X-ray diffraction pattern with at least one peak at a d-spacing greater than 18 ANGSTROM . These materials have a high surface area and sorption capacity marked by a benzene adsorption capacity of greater than about 15 grams benzene per 100 grams at 50 torr and 25 DEG C. In its preferred form, the support material has a uniform, hexagonal arrangement of pores with diameters of at least about 13 ANGSTROM and a hexagonal electron diffraction pattern that can be indexed with a d100 value greater than about 18 ANGSTROM which corresponds to at least one peak in the X-ray diffraction pattern.
Inventors
- 👤 Kenneth J. Del Rossi
- 👤 George H. Hatzikos
- 👤 Albin Huss, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:33
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/58; C10G45/60; C10G45/64; B; B01; B01J; B01J29/00; B01J29/04; B01J29/041; B01J29/042; B01J29/043; C10G35/00; C10G35/04; C10G35/06; C10G35/065; B01J2229/00; B01J2229/30; B01J2229/42; B01J29/045
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
70 words
A process for isomerizing paraffins, which comprises: isomerizing a paraffin feed in the presence of an isomerization catalyst comprising a hydrogenation/dehydrogenation component on a porous support material comprising an inorganic, non-layered, porous, crystalline phase material having pores with diameters of at least about 13 Å and which exhibits, after calcination, an X-ray diffraction pattern with at least one d-spacing greater than about 18 Å with a relative intensity of 100.
Claim 2
Dependent Claim
70 words
A process for isomerizing paraffins, which comprises: isomerizing a paraffin feed in the presence of an isomerization catalyst comprising a hydrogenation/dehydrogenation component on a porous support material comprising an inorganic, non-layered, porous, crystalline phase material having pores with diameters of at least about 13 Å and which exhibits, after calcination, an X-ray diffraction pattern with at least one d-spacing greater than about 18 Å with a relative intensity of 100.
Claim 3
Dependent Claim
18 words
A process according to claim 1 in which the feed comprises a C 4 --C 8 linear paraffin.
Claim 4
Dependent Claim
12 words
A process according to claim 1 in which the feed comprises n-pentane.
Claim 5
Dependent Claim
12 words
A process according to claim 1 in which the feed comprises n-hexane.
Claim 6
Dependent Claim
19 words
A process according to claim 1 which is carried out at a temperature from about 200° to 800° F.
Claim 7
Dependent Claim
19 words
A process according to claim 1 which is carried out at a pressure from atmospheric to about 1000 psig.
Claim 8
Dependent Claim
15 words
A process according to claim 1 which is carried out in the presence of hydrogen.
Claim 9
Dependent Claim
25 words
A process according to claim 1 which is carried out in the presence of hydrogen at a molar ratio of from 0.1:1 to 10:1 (hydrogen:paraffin).
Claim 10
Dependent Claim
18 words
A process according to claim 1 in which the catalyst comprises a noble metal on the porous support.
Claim 11
Dependent Claim
13 words
A process according to claim 9 in which the noble metal comprises platinum.
Claim 12
Dependent Claim
74 words
A process for isomerizing paraffins, which comprises: isomerizing a paraffin feed in the presence of an isomerization catalyst comprising a hydrogenation/dehydrogenation component on a porous support material comprising an inorganic, non-layered, porous, crystalline phase material having a hexagonal arrangement of uniformly-sized pores with diameters of at least about 13 Å and which exhibits, after calcination, a hexagonal electron diffraction pattern that can be indexed with a d 100 value greater than about 18 Å.
Claim 13
Dependent Claim
74 words
A process for isomerizing paraffins, which comprises: isomerizing a paraffin feed in the presence of an isomerization catalyst comprising a hydrogenation/dehydrogenation component on a porous support material comprising an inorganic, non-layered, porous, crystalline phase material having a hexagonal arrangement of uniformly-sized pores with diameters of at least about 13 Å and which exhibits, after calcination, a hexagonal electron diffraction pattern that can be indexed with a d 100 value greater than about 18 Å.
Claim 14
Dependent Claim
35 words
A process according to claim 11 in which the porous support material exhibits, after, calcination, an X-ray diffraction pattern with at least one d-spacing greater than about 18 Å with a relative intensity of 100.
Claim 15
Dependent Claim
38 words
A process according to claim 11 in which the porous support material exhibits, after, calcination, a benzene adsorption capacity of greater than about 15 grams benzene per 100 grams crystalline phase material at 50 torr and 25° C.
Claim 16
Dependent Claim
35 words
A process according to claim 11 in which the crystalline phase has an X-ray diffraction pattern following calcination with at least one peak whose d-spacing corresponds to the d value from the electron diffraction pattern.
Claim 17
Dependent Claim
116 words
A process according to claim 11 in which the crystalline phase has a composition expressed as follows: M.sub.n/q (W.sub.a X.sub.b Y.sub.c Z.sub.d O.sub.h) wherein M is one or more ions; n is the charge of the composition excluding M expressed as oxides; q is the weighted molar average valence of M; n/q is the number of moles or mole fraction of M; W is one or more divalent elements; X is one or more trivalent elements; Y is one or more tetravalent elements; Z is one or more pentavalent elements; a, b, c, and d are mole fractions of W, X, Y, and Z, respectively; h is a number of from 1 to 2.5; and (a+b+c+d)=1.
Claim 18
Dependent Claim
33 words
A process according to claim 15 wherein W comprises a divalent first row transition, metal or magnesium; X is aluminum, boron, gallium or iron; Y is silicon or germanium; and Z comprises phosphorus.
Claim 19
Dependent Claim
14 words
A process according to claim 16 wherein a and d are 0 and h=2.
Claim 20
Dependent Claim
20 words
A process according to claim 15 wherein X is aluminum, boron, gallium or iron and Y is silicon or germanium.
Claim 21
Dependent Claim
14 words
A process according to claim 18 wherein X comprises aluminum and Y comprises silicon.
Claim 22
Dependent Claim
39 words
A process according to claim 11 in which the isomerization catalyst comprises a mesoporous crystalline aluminosilicate which has, after calcination, a hexagonal arrangement of uniformly-sized pores with diameters of at least about 13 Å and the structure of MCM-41.
Claim 23
Dependent Claim
24 words
A process according to claim 11 in which the isomerization catalyst comprises from 0.1 to 2 weight percent platinum on the mesoporous support material.
Claim 24
Dependent Claim
18 words
A process according to claim 11 in which the feed comprises a C 4 -C 8 linear paraffin.
Claim 25
Dependent Claim
12 words
A process according to claim 11 in which the feed comprises n-pentane.
Claim 26
Dependent Claim
12 words
A process according to claim 11 in which the feed comprises n-hexane.
Claim 27
Dependent Claim
19 words
A process according to claim 11 which is carried out at a temperature from about 200° to 800° F.
Claim 28
Dependent Claim
19 words
A process according to claim 11 which is carried out at a pressure from atmospheric to about 1000 psig.
Claim 29
Dependent Claim
26 words
A process according to claim 11 which is carried out at in the presence of hydrogen at a molar ratio of from 0.1:1 to 10:1 (hydrogen:paraffin).
Claim 30
Dependent Claim
39 words
A process according to claim 11 in which the paraffin feed comprises a C 6 + naphtha which undergoes ring opening in the presence of the catalyst to form paraffins which are isomerized in the presence of the catalyst.
Claim 31
Dependent Claim
20 words
A process according to claim 11 in which the catalyst includes a component having Lewis acid or Bronsted acid activity.
Claim 32
Dependent Claim
16 words
A process according to claim 29 in which the catalyst includes aluminum trichloride or boron trifluoride.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1996-10-25 | 1997-04-26 | 1997-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-10-25 | 2001-04-26 | 2001-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-10-25 | 2005-04-26 | 2005-10-26 | $7700.00 | Window Closed / Lapsed |