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US3979331A Expired / Lapsed US ⏱️ 0.0 years remaining

Catalyst for alkylating aromatic hydrocarbons

Assignee: Baroid Technology Inc
•
Filing: 1974-12-06
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Granted: 1976-09-07
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Expires: 1994-12-06
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Abstract

Abstract Alkylatable aromatic hydrocarbons are alkylated with olefins and alkylhalides under anhydrous alkylating conditions in the presence of certain metallic cation exchanged synthetic hectorite-type catalysts in which the metallic cation has a Pauling electronegativity greater than 1.0 and in which the central octahedral layer contains one or more divalent metals which have an ionic radius not greater than 0.75 A. In a specific embodiment, 1-dodecene is reacted with benzene by contacting the dodecene and benzene under anhydrous alkylating conditions in the liquid phase at the boiling point of the mixture with a catalyst comprising a metallic cation such as Al3<->, In3<->+l, and Cr3<-> exchanged onto the surface of a synthetic nickeliferous hectorite.

Inventors

  • 👤 George E. Stridde

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 08:07
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; B; B01; B01J; B01J21/00; B01J21/16; B01J29/00; B01J29/04; B01J29/049; C07C2/86; C07C2/862; B01J2229/00; B01J2229/30; B01J2229/42

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 99 words
A catalyst comprising a synthetic hectorite-type clay containing a metallic cation having a Pauling electronegativity greater than 1.0 in cation exchange positions on the surface of said clay, said catalyst having the following structural formula: [ (M.sub.6.sub.-x.sup.2.sup.+ Li.sub.x.sup.+) .sup.VI Si.sub.8 O.sub.20 (OH).sub.4.sub.-y F.sub.y ] (x-z) R.sup.z where 0.33≦ x≦1 0≦ y ≦ 4 M is one or more divalent cations having an ionic radius not greater than 0.75 A, provided that M is less than 95 mole percent Mg, and R is at least one of said metallic cations having a Pauling electronegativity greater than 1.0 of valence z.
Claim 2
Dependent Claim 99 words
A catalyst comprising a synthetic hectorite-type clay containing a metallic cation having a Pauling electronegativity greater than 1.0 in cation exchange positions on the surface of said clay, said catalyst having the following structural formula: [ (M.sub.6.sub.-x.sup.2.sup.+ Li.sub.x.sup.+) .sup.VI Si.sub.8 O.sub.20 (OH).sub.4.sub.-y F.sub.y ] (x-z) R.sup.z where 0.33≦ x≦1 0≦ y ≦ 4 M is one or more divalent cations having an ionic radius not greater than 0.75 A, provided that M is less than 95 mole percent Mg, and R is at least one of said metallic cations having a Pauling electronegativity greater than 1.0 of valence z.
Claim 3
Dependent Claim 30 words
The catalyst of claim 1 wherein 0 ≦ y ≦ 2 and wherein M is a divalent cation selected from the group consisting of Mg, Ni, Co, and mixtures thereof.
Claim 4
Dependent Claim 14 words
The catalyst of claim 2 wherein M is less than 90 mole percent Mg.
Claim 5
Dependent Claim 81 words
The catalyst of claim 3 wherein said R is selected from the group consisting of Al 3 + , Cr 3 + , Ga 3 + , In 3 + , Mn 2 + , Fe 3 + , Co 3 + , Co 2 + , Ni 2 + , Cu 2 + , Ag + , Be 2 + , La 3 + , Ce 3 + , Pd 2 + , Pt 2 + , and mixtures thereof.
Claim 6
Dependent Claim 12 words
The catalyst of claim 3 wherein R is Al.sup. 3 + .

References Cited (Backward Citations)

US3655798A Cited
US3725528A Cited
US3844978A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-09-07 1980-03-08 1980-09-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-09-07 1984-03-08 1984-09-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-09-07 1988-03-08 1988-09-07 $7700.00 Window Closed / Lapsed

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