GB971551A - Treatment of poisoned silica catalysts - Google Patents
Treatment of poisoned silica catalystsInfo
- Publication number
- GB971551A GB971551A GB3692460A GB3692460A GB971551A GB 971551 A GB971551 A GB 971551A GB 3692460 A GB3692460 A GB 3692460A GB 3692460 A GB3692460 A GB 3692460A GB 971551 A GB971551 A GB 971551A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silica
- contact
- chlorinating agent
- remove
- carbon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/20—Regeneration or reactivation
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Silica or clay, containing Ni or V as poisoning metal and possibly also Fe, is treated to remove the contaminants by contact at up to 1000 DEG F. with an anhydrous chlorinating agent and subsequently contacting with a liquid aqueous medium. Preferably, when V is present, the silica or clay is first contacted with O2-containing gas to remove carbonaceous deposits and to convert the V to higher valency states. Prior to chlorination, the poisoning metal may be sulphides by contact with e.g. H2S. The chlorinating agent may be (a) Cl2, (b) a vaporizable chlorine compound of carbon or sulphur, or (c) a mixture of (a) and/or HCl with (b); when (b) is a carbon compound it may be made in situ from Cl2 and a hydrocarbon. Component (b) may be, e.g., CCl4, S2Cl2 or SCl2. Example XIII describes treatment of a proprietary acid-activated montmorilloxide with (i) air at 1000 DEG F., (ii) H2S at 1050 DEG F., (iii) Cl2/CCl4 at 600 DEG F. and thereafter washing, to reduce its content of Ni, V and Fe.ALSO:Silica catalysts containing Ni or V as poisoning metal and possibly Fe, are treated to remove the contaminants by contact at up to 1000 DEG F. with an anhydrous chlorinating agent and subsequently contacting with a liquid aqueous medium. Preferably, when V is present, the catalyst is first regenerated with O2-containing gas at at least 1000 DEG F. to remove carbonaceous deposits and to convert the V to higher valency states. Prior to chlorination, the poisoning metal may be sulphided by contact with, e.g., H2S. The chlorinating agent may be (a) Cl2, (b) a vaporizable chlorine compound of carbon or sulphur or (c) a mixture of (a) and/or HCl with (b); when (b) is a carbon compound it may be made in situ from Cl2 and a hydrocarbon. Component (b) may be, e.g., CCl4, S2Cl2 or SCl2. Specified catalysts are silica-alumina optionally containing also a kaolinite, halloysite or an activated clay; silica-zirconia; silica-alumina-zirconia; acid-activated montmorillonite. U.S.A. Specifications 2,481,253, 2,488,718, 2,488,744, 2,668,798 and 2,693,455 are referred to.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US84919959A | 1959-10-28 | 1959-10-28 | |
US54405A US3122510A (en) | 1960-09-07 | 1960-09-07 | Method of removing nickel and vanadium from synthetic gel silica-based catalysts |
Publications (1)
Publication Number | Publication Date |
---|---|
GB971551A true GB971551A (en) | 1964-09-30 |
Family
ID=26732993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3692460A Expired GB971551A (en) | 1959-10-28 | 1960-10-27 | Treatment of poisoned silica catalysts |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB971551A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2484439A1 (en) * | 1979-12-21 | 1981-12-18 | Nippon Oil Co Ltd | FLUIDIZED CATALYTIC CRACKING OF RESIDUAL DISTILLATION OILS |
US7638039B2 (en) | 2004-06-15 | 2009-12-29 | Cormetech, Inc. | In-situ catalyst replacement |
-
1960
- 1960-10-27 GB GB3692460A patent/GB971551A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2484439A1 (en) * | 1979-12-21 | 1981-12-18 | Nippon Oil Co Ltd | FLUIDIZED CATALYTIC CRACKING OF RESIDUAL DISTILLATION OILS |
US7638039B2 (en) | 2004-06-15 | 2009-12-29 | Cormetech, Inc. | In-situ catalyst replacement |
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