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US3917540A Expired / Lapsed US ⏱️ 0.0 years remaining

Catalyst for hydrogenation and dehydrogenation of hydrocarbons

Assignee: Universal Oil Products Co
•
Filing: 1974-07-19
•
Granted: 1975-11-04
•
Expires: 1994-07-19
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Abstract

Abstract A novel catalytic composite comprising a Group VIII noble metal component, an alkalinous metal component and a Group VII-B metal component, having an atomic number greater than 25, on an alumina carrier is utilized in the hydrogenation of aromatic hydrocarbons to the corresponding cycloparaffins and in the dehydrogenation of normal paraffins to the corresponding mono-olefins. With respect to the former, there is negligible yield loss to both gaseous waste material and to acyclic hydrocarbons as a result of ringopening; in the latter, there is afforded a significant decrease in the quantity of non-normal hydrocarbons in the product stream. The particularly preferred catalytic composite comprises a platinum or palladium component, a lithium or potassium component and a rhenium component.

Inventors

  • 👤 Ernest L Pollitzer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 16:30
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/02; C07C5/10; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/656; C07C5/32; C07C5/327; C07C5/333; C07C5/3335; C07C5/3337; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/16; C07C2523/32; C07C2523/36; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/44; C07C2523/54; C07C2523/56; C07C2523/64; C07C2523/656

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 94 words
A NON-ACID-ACTING CATALYTIC COMPOSITE OF ALUMINA CARRIER, A GROUP VIII NOBLE METAL, AN ALKALINOUS METAL SELECTED FROM THE GROUP CONSISTING OF LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CESIUM, BERYLLIUM, MAGNESIUM, CALCIUM, STRONTIUM, BARIUM AND MIXTURES THEREOF, AND A GROUP VII-B METAL HAVING AN ATOMIC NUMBER GREATER THAN 25, SAID COMPOSITE CONTAINING ON AN ELEMENTAL BASIC GROUP VIII NOBLE METAL IN AN AMOUNT OF FROM 0.01% TO ABOUT 2.0% BY WEIGHT, GROUP VII-B METAL IN AN AMOUNT OF 0.01% TO ABOUT 2.0% BY WEIGHT AND ALKALINOUS METAL IN AN AMOUNT OF 0.01% TO ABOUT 1.5% BY WEIGHT.
Claim 2
Dependent Claim 94 words
A NON-ACID-ACTING CATALYTIC COMPOSITE OF ALUMINA CARRIER, A GROUP VIII NOBLE METAL, AN ALKALINOUS METAL SELECTED FROM THE GROUP CONSISTING OF LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CESIUM, BERYLLIUM, MAGNESIUM, CALCIUM, STRONTIUM, BARIUM AND MIXTURES THEREOF, AND A GROUP VII-B METAL HAVING AN ATOMIC NUMBER GREATER THAN 25, SAID COMPOSITE CONTAINING ON AN ELEMENTAL BASIC GROUP VIII NOBLE METAL IN AN AMOUNT OF FROM 0.01% TO ABOUT 2.0% BY WEIGHT, GROUP VII-B METAL IN AN AMOUNT OF 0.01% TO ABOUT 2.0% BY WEIGHT AND ALKALINOUS METAL IN AN AMOUNT OF 0.01% TO ABOUT 1.5% BY WEIGHT.
Claim 3
Dependent Claim 31 words
The composite of claim 1 further characterized in that said Group VIII metal is platinum or palladium, said Group VII-B metal is rhenium and said alkalinous metal is lithium or potassium.
Claim 4
Dependent Claim 38 words
The composite of claim 1 further characterized in that the weight ratio of said Group VII-B metal to said Group VIII noble metal is in the range of about 0.01:1 to about 2.5:1 calculated on an elemental basis.

References Cited (Backward Citations)

US3432565A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-11-03 1979-05-05 1979-11-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-11-03 1983-05-05 1983-11-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-11-03 1987-05-05 1987-11-04 $7700.00 Window Closed / Lapsed

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