US4476339A
Expired / Lapsed
US
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Dehydrogenation process using a rhodium catalyst
Assignee: Texaco Inc
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Filing: 1981-02-05
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Granted: 1984-10-09
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Expires: 2001-02-05
Abstract
Abstract Steam dehydrocyclization of paraffinic hydrocarbons to aromatic hydrocarbons is effected in the presence of supported catalyst, typically bearing rhodium and preferably chromium and potassium, and characterized by a pH less than about 8.
Inventors
- 👤 Russell R. Reinhard
- 👤 Tansukhial G. Dorawala
- 👤 Edwin R. Kerr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:47
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/89; B01J23/8933; B01J23/8993; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/652; B01J23/6522; B01J23/8946; C; C07; C07C; C07C5/00; C07C5/32; C07C5/373; C07C5/393; C07C5/41; C07C5/415; C07C5/417; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
78 words
The method of dehydrogenating a hydrocarbon to form the corresponding olefin which comprises contacting at least one hydrocarbon selected from the group consisting of methylcyclopentane and isohexane, in the presence of steam at 700° F.-1150° F. and 0-300 psig and at steam-to-hydrocarbon mole ratio of 1-50:1, with a catalyst composition, having a pH of about 4.6-6.0, containing a porous support bearing a catalytic amount of a metal of Group VI B of the Periodic Table and of rhodium.
Claim 2
Independent Claim
78 words
The method of dehydrogenating a hydrocarbon to form the corresponding olefin which comprises contacting at least one hydrocarbon selected from the group consisting of methylcyclopentane and isohexane, in the presence of steam at 700° F.-1150° F. and 0-300 psig and at steam-to-hydrocarbon mole ratio of 1-50:1, with a catalyst composition, having a pH of about 4.6-6.0, containing a porous support bearing a catalytic amount of a metal of Group VI B of the Periodic Table and of rhodium.
Claim 3
Independent Claim
69 words
The method of dehydrogenating a hydrocarbon to form the corresponding olefin which comprises contacting at least one hydrocarbon selected from the group consisting of methylcyclopentane and isohexane, in the presence of steam at 700° F.-1150° F. and 0-300 psig and at steam-to-hydrocarbon mole ratio of 1-50:1, with a catalyst composition, having a pH of about 4.6-6.0, containing a porous support bearing a catalytic amount of chromium and of rhodium.
Claim 4
Independent Claim
69 words
The method of dehydrogenating a hydrocarbon to form the corresponding olefin which comprises contacting at least one hydrocarbon selected from the group consisting of methylcyclopentane and isohexane, in the presence of steam at 700° F.-1150° F. and 0-300 psig and at steam-to-hydrocarbon mole ratio of 1-50:1, with a catalyst composition, having a pH of about 4.6-6.0, containing a porous support bearing a catalytic amount of chromium and of rhodium.
Claim 5
Independent Claim
69 words
The method of dehydrogenating a hydrocarbon to form the corresponding olefin which comprises contacting at least one hydrocarbon selected from the group consisting of methylcyclopentane and isohexane, in the presence of steam at 700° F.-1150° F. and 0-300 psig and at steam-to-hydrocarbon mole ratio of 1-50:1, with a catalyst composition, having a pH of about 4.6-6.0, containing a porous support bearing a catalytic amount of rhodium, potassium and iron.
Claim 6
Independent Claim
69 words
The method of dehydrogenating a hydrocarbon to form the corresponding olefin which comprises contacting at least one hydrocarbon selected from the group consisting of methylcyclopentane and isohexane, in the presence of steam at 700° F.-1150° F. and 0-300 psig and at steam-to-hydrocarbon mole ratio of 1-50:1, with a catalyst composition, having a pH of about 4.6-6.0, containing a porous support bearing a catalytic amount of rhodium, potassium and iron.
Claim 7
Independent Claim
78 words
The method of dehydrogenating a hydrocarbon to form the corresponding olefin which comprises contacting at least one hydrocarbon selected from the group consisting of methylcyclopentane and isohexane, in the presence of steam at 700° F.-1150° F. and 0-300 psig and at steam-to-hydrocarbon mole ratio of 1-50:1, with a catalyst composition, having a pH of about 4.6-6.0, containing 0.1 wt.%-2.0 wt.% rhodium, 1 wt.%-4 wt.% potassium, 0.5 wt.%-20 wt.% iron, 10 wt.%-38 wt.% chromium, and 38 wt.%-88 wt.% alumina.
Claim 8
Independent Claim
78 words
The method of dehydrogenating a hydrocarbon to form the corresponding olefin which comprises contacting at least one hydrocarbon selected from the group consisting of methylcyclopentane and isohexane, in the presence of steam at 700° F.-1150° F. and 0-300 psig and at steam-to-hydrocarbon mole ratio of 1-50:1, with a catalyst composition, having a pH of about 4.6-6.0, containing 0.1 wt.%-2.0 wt.% rhodium, 1 wt.%-4 wt.% potassium, 0.5 wt.%-20 wt.% iron, 10 wt.%-38 wt.% chromium, and 38 wt.%-88 wt.% alumina.
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