EP0169026A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Activation of zeolites
Assignee: Mobil Oil AS
•
Filing: 1985-07-10
•
Granted: —
•
Expires: 2005-07-10
Abstract
Abstract 57 A method is provided for controlling the catalytic activity of a large-pore, high silica content zeolite that contains framework boron. Control is effected by treatment with an aqueous solution of a salt of a metal selected from aluminum, gallium, iron and mixtures thereof under conditions effective to remove boron from said composition.
Inventors
- 👤 Pochen Chu
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 01:57
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/70; B01J29/7034; B01J29/03; B01J29/035; B01J29/061; B01J29/7007; B01J29/82; B01J29/84; B01J29/85; B01J29/86; B01J37/00; B01J37/06; B01J2229/00; B01J2229/30; B01J2229/36
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
66 words
A method for increasing the catalytic activity of a composition comprising a high silica content large pore zeolite, which composition contains from 0.1 wt% to 2.5 wt% of framework boron, said method comprising the step of: contacting said composition with an aqueous solution of a salt of a metal selected from aluminum, gallium, iron and mixtures thereof under conditions effective to remove boron from said composition.
Claim 2
Independent Claim
66 words
A method for increasing the catalytic activity of a composition comprising a high silica content large pore zeolite, which composition contains from 0.1 wt% to 2.5 wt% of framework boron, said method comprising the step of: contacting said composition with an aqueous solution of a salt of a metal selected from aluminum, gallium, iron and mixtures thereof under conditions effective to remove boron from said composition.
Claim 3
Dependent Claim
22 words
The method as claimed in Claim 1 wherein said zeolite is converted to the ammonium or hydrogen form before said contacting step.
Claim 4
Dependent Claim
24 words
The method as claimed in Claim 1 or Claim 2 wherein said contacting step is conducted at a pH not greater than about 6.
Claim 5
Independent Claim
20 words
The method as claimed in any preceding claim wherein the zeolite has a silica to alumina ratio greater than 10.
Claim 6
Independent Claim
21 words
The method as claimed in any preceding claim wherein the zeolite has a constraint index less than or equal to 2.
Claim 7
Independent Claim
17 words
The method as claimed in any preceding claim wherein the zeolite is zeolite beta, ZSM-12 or mordenite.
Claim 8
Independent Claim
14 words
The method as claimed in any preceding claim wherein the zeolite is zeolite beta.
Claim 9
Independent Claim
19 words
The method as claimed in any preceding claim wherein the contacting step is effected at 20-150°C for 0.05-10 hours.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.