EP0122572A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Catalysts and catalyst supports
Assignee: WR Grace and Co
•
Filing: 1984-04-07
•
Granted: —
•
Expires: 2004-04-07
Abstract
Abstract Catalysts which comprise or contain caustic leached spinal/mullite are found to possess a particularly high activity and stability for the catalytic conversion of hydrocarbons.
Inventors
- 👤 Roger Jean Lussier
- 👤 George John Surland
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 16:03
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05; B; B01; B01J; B01J21/00; B01J21/16; B01J37/00; B01J37/06; C10G49/00; C10G49/02; C10G49/08
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
64 words
In a cracking catalyst composition which comprises a crystalline zeolite and inorganic oxide matrix, the improvement comprising including in said catalyst composition a finely divided, calcined caustic- leached spinel/mullite component having a silica to alumina ratio of from about 0.5 to 1.7 and an acid site retention of from about 70 to 95 percent after treating at 1350°F in the presence of saturated steam.
Claim 2
Dependent Claim
64 words
In a cracking catalyst composition which comprises a crystalline zeolite and inorganic oxide matrix, the improvement comprising including in said catalyst composition a finely divided, calcined caustic- leached spinel/mullite component having a silica to alumina ratio of from about 0.5 to 1.7 and an acid site retention of from about 70 to 95 percent after treating at 1350°F in the presence of saturated steam.
Claim 3
Dependent Claim
63 words
The composition of claim 1 in which the spinel/mullite component has an alumina content of 50 to 75%, a surface area of about 150 to 350 m 2 /g, a total pore volume of 0.30 to 1.00 cc/g, and is prepared by caustic leach of a clay calcined at a time and temperature such that the composition is predominantly in a spinel/mullite form.
Claim 4
Dependent Claim
16 words
The composition of claim 1 wherein said spinel/mullite component contains up to 50 mole percent mullite.
Claim 5
Dependent Claim
18 words
The composition of claim 3 which contains from about 5 to 30 percent by weight type Y zeolite.
Claim 6
Dependent Claim
36 words
The composition of claim 1 wherein said calcined leached spinel/mullite component has a particle size of from about 0.05 to 20 microns and is incorporated into the matrix of said catalyst as a separate, particulate component.
Claim 7
Dependent Claim
22 words
The catalyst of claim 1 wherein said catalyst contains from about 5 to 50 percent by weight of said calcined leached spinel/mullite.
Claim 8
Dependent Claim
37 words
The catalyst of claim 6 wherein the said calcined leached spinel/mullite has a microspheroidal particle shape, having a diameter of from about 20 to 200 microns, and is mixed with said catalyst as a separate particulate component.
Claim 9
Dependent Claim
21 words
A method for cracking hydrocarbons which comprises reacting a hydrocarbon feedstock under catalytic cracking conditions with the catalyst of claim 1.
Claim 10
Dependent Claim
24 words
The method of claim 8 wherein said hydrocarbon feedstock is a residual feedstock which contains from about 5 to 200 ppm vanadium and/or nickel.
Claim 11
Dependent Claim
22 words
A catalyst support comprising a calcined caustic leached spinel/mullite formed into particles having a size ranging from about 0.5 to 4 mm.
Claim 12
Dependent Claim
22 words
A catalyst support comprising a calcined caustic leached spinel/mullite formed into particles having a size ranging from about 0.5 to 4 mm.
Claim 13
Dependent Claim
14 words
The support of claim 10 wherein said particles comprise extrudates, pills, granules and spheres.
Claim 14
Dependent Claim
31 words
The catalyst support of claim 11 having a surface area of from about 150 to 350 m 2 /g and a total pore volume of from about 0.30 to 1.00 cc/g.
Claim 15
Dependent Claim
51 words
The catalyst support of claim 12 wherein said total pore volume is present in the following distribution: 0.20 to 0.60 cc/g in pores below 100 A°, 0.05 to 0.20 cc/g in pores 100 to 600 A° in diameter, and 0.10 to 0.50 cc/g in pores greater than 600 A° in diameter.
Claim 16
Dependent Claim
23 words
A hydroprocessing catalyst comprising the support of claim 10 in combination with metals selected from Groups VI and VIII of the Periodic Chart.
Claim 17
Dependent Claim
22 words
The composition of claim 13 wherein said metal is selected from the group consisting of cobalt, molybdenum, nickel, tungsten and mixtures thereof.
Claim 18
Dependent Claim
21 words
The catalyst of claim 15 wherein said metals are present in quantities ranging from about 0.01 to 0.20 parts by weight.
Claim 19
Dependent Claim
38 words
A spinel/mullite composition characterized by a silica to alumina ratio of from about 0.5 to 1.7 and an acid site retention of from about 70 to 95 percent after treating at 1350°F in the presence of saturated steam.
Claim 20
Dependent Claim
38 words
A spinel/mullite composition characterized by a silica to alumina ratio of from about 0.5 to 1.7 and an acid site retention of from about 70 to 95 percent after treating at 1350°F in the presence of saturated steam.
Claim 21
Dependent Claim
12 words
The composition of claim 17 which contains essentially 100 mole percent spinel.
Claim 22
Dependent Claim
20 words
The composition of claim 17 which contains 100 to 50 mole percent spinel and 0 to 50 mole percent mullite.
Claim 23
Dependent Claim
13 words
The composition of claim 17 which is derived from calcined caustic leached clay.
Claim 24
Dependent Claim
10 words
The composition of claim 20 wherein said clay is kaolin.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.