EP0095364A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Phosphorus-containing catalyst and catalytic cracking process utilizing the same
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1983-05-23
•
Granted: —
•
Expires: 2003-05-23
Abstract
Abstract A phosphorus-containing low alkali metal content zeolitic catalyst made from a clay starting material is provided. The catalyst is obtained by contacting a partially cation exchanged calcined zeolite-containing catalyst with a dihydrogen phosphate anion or a dihydrogen phosphite anion. A hydrocarbon catalytic cracking process utilizing the phosphorus-containing catalyst is also provided.
Inventors
- 👤 Lloyd Albert Pine
- 👤 Neville Leverne Cull
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 05:52
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J29/084; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
136 words
A catalyst characterized in that it comprises a crystalline alumino-silicate zeolite prepared from a clay starting material, a residue derived from said clay, and an effective amount of phosphorus, said catalyst having been prepared by the steps which comprise: (a) ion exchanging a clay derived alkali metal-containing Y-type crystalline aluminosilicate zeolite and the clay derived residue with a cation of a non-alkali metal to decrease the alkali metal content of said alkali metal-containing zeolite; (b) calcining the resulting ion exchanged zeolite and clay derived residue, and (c) contacting the resulting calcined zeolite and clay derived residue with a medium comprising an anion selected from the group consisting of a dihydrogen phosphate anion, a dihydrogen phosphite anion and mixtures thereof for a time sufficient to composite said effective amount of phosphorus with said calcined zeolite and residue.
Claim 2
Dependent Claim
136 words
A catalyst characterized in that it comprises a crystalline alumino-silicate zeolite prepared from a clay starting material, a residue derived from said clay, and an effective amount of phosphorus, said catalyst having been prepared by the steps which comprise: (a) ion exchanging a clay derived alkali metal-containing Y-type crystalline aluminosilicate zeolite and the clay derived residue with a cation of a non-alkali metal to decrease the alkali metal content of said alkali metal-containing zeolite; (b) calcining the resulting ion exchanged zeolite and clay derived residue, and (c) contacting the resulting calcined zeolite and clay derived residue with a medium comprising an anion selected from the group consisting of a dihydrogen phosphate anion, a dihydrogen phosphite anion and mixtures thereof for a time sufficient to composite said effective amount of phosphorus with said calcined zeolite and residue.
Claim 3
Dependent Claim
11 words
The catalyst of claim 1 wherein said catalyst additionally comprises clay.
Claim 4
Dependent Claim
33 words
.3. The catalyst of claim 1 or claim 2 wherein said catalyst additionally comprises an inorganic oxide selected from the group consisting of silica, alumina, silica-alumina, zirconia, boria, titania, magnesia and mixtures thereof.
Claim 5
Dependent Claim
31 words
The catalyst of any of claims 1 to 3 wherein said catalyst comprises at least about 0.1 weight percent of said phosphorus, based on the weight of said zeolite plus residue.
Claim 6
Dependent Claim
48 words
The catalyst of any of claims 1 to 4 wherein said calcination is conducted at conditions such as to decrease the unit cell size of said zeolite by an amount ranging from about 0.05 to 0.10 angstroms from its initial unit cell size of about above 24.5 angstroms.
Claim 7
Dependent Claim
27 words
The catalyst of any of claims 1 to 5 wherein said calcination is conducted at a temperature ranging from about 500°F to about 140 0 o F.
Claim 8
Dependent Claim
49 words
The catalyst of any of claims 1 to 6 wherein said anion is derived from a phosphorus-containing component selected from the group consisting of phosphorous acid (H 3 P0 3 ), phosphoric acid (H 3 P0 4 ), salts of phosphorous acid, salts of phosphoric acid and mixtures thereof.
Claim 9
Dependent Claim
113 words
A process of preparing a Y-type crystalline aluminosilicate zeolite from a clay starting material and an additional source of silica and wherein an alkali metal-containing crystalline aluminosilicate zeolite derived from clay and a clay derived residue are ion exchanged with a cation of anon-alkali metal to decrease the alkali metal content of said zeolite and the ion exchanged zeolite and clay derived residue are calcined, characterized by the step which comprises contacting the calcined ion exchanged zeolite and residue with a medium comprising an anion selected from the group consisting of dihydrogen phosphite anion, dihydrogen phosphate anion and mixtures thereof, to composite at least a portion of phosphorus with said zeolite and residue.
Claim 10
Dependent Claim
113 words
A process of preparing a Y-type crystalline aluminosilicate zeolite from a clay starting material and an additional source of silica and wherein an alkali metal-containing crystalline aluminosilicate zeolite derived from clay and a clay derived residue are ion exchanged with a cation of anon-alkali metal to decrease the alkali metal content of said zeolite and the ion exchanged zeolite and clay derived residue are calcined, characterized by the step which comprises contacting the calcined ion exchanged zeolite and residue with a medium comprising an anion selected from the group consisting of dihydrogen phosphite anion, dihydrogen phosphate anion and mixtures thereof, to composite at least a portion of phosphorus with said zeolite and residue.
Claim 11
Dependent Claim
40 words
A catalytic cracking process comprising contacting ■ hydrocarbonaceous feed at catalytic cracking conditions either with a catalyst in accordance with any one of claims 1 to 7 or with a catalyst prepared by a method in accordance with claim 8.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.