NL8520394A - - Google Patents
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- Publication number
- NL8520394A NL8520394A NL8520394A NL8520394A NL8520394A NL 8520394 A NL8520394 A NL 8520394A NL 8520394 A NL8520394 A NL 8520394A NL 8520394 A NL8520394 A NL 8520394A NL 8520394 A NL8520394 A NL 8520394A
- Authority
- NL
- Netherlands
- Prior art keywords
- catalyst
- metal
- solution
- rejuvenating
- water
- Prior art date
Links
- 239000003054 catalyst Substances 0.000 claims description 318
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 60
- 229910052751 metal Inorganic materials 0.000 claims description 48
- 239000002184 metal Substances 0.000 claims description 48
- 239000010457 zeolite Substances 0.000 claims description 46
- 229910021536 Zeolite Inorganic materials 0.000 claims description 43
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 42
- 239000000243 solution Substances 0.000 claims description 41
- 230000003716 rejuvenation Effects 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 36
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 33
- 239000001301 oxygen Substances 0.000 claims description 33
- 229910052760 oxygen Inorganic materials 0.000 claims description 33
- 239000007864 aqueous solution Substances 0.000 claims description 30
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 26
- 238000005406 washing Methods 0.000 claims description 22
- 239000011148 porous material Substances 0.000 claims description 21
- 239000012736 aqueous medium Substances 0.000 claims description 19
- 230000003647 oxidation Effects 0.000 claims description 19
- 238000007254 oxidation reaction Methods 0.000 claims description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- 150000003839 salts Chemical class 0.000 claims description 16
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 15
- 229910052717 sulfur Inorganic materials 0.000 claims description 15
- 239000011593 sulfur Substances 0.000 claims description 15
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 14
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 14
- 239000001257 hydrogen Substances 0.000 claims description 14
- 229910052739 hydrogen Inorganic materials 0.000 claims description 14
- 230000007935 neutral effect Effects 0.000 claims description 14
- 229910052697 platinum Inorganic materials 0.000 claims description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 12
- 229910052783 alkali metal Inorganic materials 0.000 claims description 8
- 230000001590 oxidative effect Effects 0.000 claims description 8
- 150000001340 alkali metals Chemical class 0.000 claims description 7
- 239000003637 basic solution Substances 0.000 claims description 7
- 239000007791 liquid phase Substances 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 230000002349 favourable effect Effects 0.000 claims description 5
- 239000003929 acidic solution Substances 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims 2
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 40
- 229910052757 nitrogen Inorganic materials 0.000 description 20
- 238000002407 reforming Methods 0.000 description 14
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 11
- 229910000000 metal hydroxide Inorganic materials 0.000 description 11
- 239000008367 deionised water Substances 0.000 description 10
- 229910021641 deionized water Inorganic materials 0.000 description 10
- 150000004692 metal hydroxides Chemical class 0.000 description 10
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 10
- 238000011069 regeneration method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 239000010453 quartz Substances 0.000 description 9
- 229910052788 barium Inorganic materials 0.000 description 8
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 8
- 230000008929 regeneration Effects 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 7
- 239000012298 atmosphere Substances 0.000 description 7
- 238000001354 calcination Methods 0.000 description 7
- 229910052809 inorganic oxide Inorganic materials 0.000 description 7
- 238000005342 ion exchange Methods 0.000 description 7
- 238000011282 treatment Methods 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 6
- -1 acyclic hydrocarbons Chemical class 0.000 description 6
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- 239000011591 potassium Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 229910001507 metal halide Inorganic materials 0.000 description 3
- 150000005309 metal halides Chemical class 0.000 description 3
- 229910001960 metal nitrate Inorganic materials 0.000 description 3
- 229910001463 metal phosphate Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- NWAHZABTSDUXMJ-UHFFFAOYSA-N platinum(2+);dinitrate Chemical compound [Pt+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O NWAHZABTSDUXMJ-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 2
- 238000004517 catalytic hydrocracking Methods 0.000 description 2
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000012263 liquid product Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000001833 catalytic reforming Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 150000001934 cyclohexanes Chemical class 0.000 description 1
- 230000020335 dealkylation Effects 0.000 description 1
- 238000006900 dealkylation reaction Methods 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000012013 faujasite Substances 0.000 description 1
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 238000006317 isomerization reaction Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000006057 reforming reaction Methods 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 239000011555 saturated liquid Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 229910000033 sodium borohydride Inorganic materials 0.000 description 1
- 239000012279 sodium borohydride Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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
-
- 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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/90—Regeneration or reactivation
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Saccharide Compounds (AREA)
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US66948784A | 1984-11-08 | 1984-11-08 | |
| US66948684A | 1984-11-08 | 1984-11-08 | |
| US66948484A | 1984-11-08 | 1984-11-08 | |
| US66948484 | 1984-11-08 | ||
| US66948784 | 1984-11-08 | ||
| US66948684 | 1984-11-08 | ||
| US8502218 | 1985-11-07 | ||
| PCT/US1985/002218 WO1986002861A1 (en) | 1984-11-08 | 1985-11-07 | Rejuvenation of a deactivated catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL8520394A true NL8520394A (enrdf_load_stackoverflow) | 1986-10-01 |
Family
ID=27418191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL8520394A NL8520394A (enrdf_load_stackoverflow) | 1984-11-08 | 1985-11-07 |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0204750A4 (enrdf_load_stackoverflow) |
| KR (1) | KR870700404A (enrdf_load_stackoverflow) |
| AU (1) | AU5201686A (enrdf_load_stackoverflow) |
| CA (1) | CA1257245A (enrdf_load_stackoverflow) |
| DE (1) | DE3590575T1 (enrdf_load_stackoverflow) |
| GB (1) | GB2176716A (enrdf_load_stackoverflow) |
| NL (1) | NL8520394A (enrdf_load_stackoverflow) |
| WO (1) | WO1986002861A1 (enrdf_load_stackoverflow) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE34250E (en) * | 1986-12-19 | 1993-05-11 | Chevron Research And Technology Company | Process for regenerating sulfur contaminated reforming catalysts |
| US4851380A (en) * | 1986-12-19 | 1989-07-25 | Chevron Research Company | Process for regenerating sulfur contaminated reforming catalysts |
| GB2211756A (en) * | 1987-10-30 | 1989-07-12 | Shell Int Research | Process for the preparation of paraffinic hydrocarbons and of a catalyst for said process |
| US4994423A (en) * | 1990-05-25 | 1991-02-19 | Amoco Corporation | Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst |
| US5270272A (en) * | 1992-05-26 | 1993-12-14 | Uop | Sulfur removal from molecular-sieve catalyst |
| US6521791B1 (en) * | 2001-11-09 | 2003-02-18 | Air Products And Chemicals, Inc. | Process for regenerating a monolith hydrogenation catalytic reactor |
| US8912108B2 (en) | 2012-03-05 | 2014-12-16 | Chevron Phillips Chemical Company Lp | Methods of regenerating aromatization catalysts |
| US8716161B2 (en) | 2012-03-05 | 2014-05-06 | Chevron Phillips Chemical Company | Methods of regenerating aromatization catalysts |
| US9387467B2 (en) | 2012-09-26 | 2016-07-12 | Chevron Phillips Chemical Company Lp | Aromatization catalysts with high surface area and pore volume |
| KR101369021B1 (ko) * | 2012-10-25 | 2014-02-28 | 한국화학연구원 | 수분 안정성이 향상된 유독성 가스 제거용 저온산화촉매 |
| US10226761B2 (en) | 2016-12-20 | 2019-03-12 | Chevron Phillips Chemical Company, Lp | Aromatization catalyst preparation with alkali metal present during a washing step |
| US10118167B2 (en) * | 2016-12-20 | 2018-11-06 | Chevron Phillips Chemical Company Lp | Methods for regenerating sulfur-contaminated aromatization catalysts |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2225811A (en) * | 1938-10-31 | 1940-12-24 | Universal Oil Prod Co | Treatment of catalysts |
| US3450644A (en) * | 1966-11-15 | 1969-06-17 | Union Carbide Corp | Treatment of oxidatively regenerated molecular sieve catalysts |
| US3524822A (en) * | 1967-09-11 | 1970-08-18 | Sinclair Research Inc | Process for washing and removing catalyst fines from a bed of solid catalyst particles in a reactor |
| US3625865A (en) * | 1968-10-21 | 1971-12-07 | Chevron Res | Method of increasing hydrocracking activity and/or reducing hydrocracking activity decline rate of catalyst comprising layered crystalline clay-type aluminosilicate component |
| BE764917A (en) * | 1970-03-27 | 1971-09-27 | Mobil Oil Corp | Regeneration of zeolite hydrocarbon con-version catalysts |
| US3692692A (en) * | 1970-10-29 | 1972-09-19 | Union Oil Co | Rejuvenation of damaged zeolitesupported metal catalysts |
| CA1003392A (en) * | 1971-01-18 | 1977-01-11 | Harry E. Robson | Preparation of improved hydrocarbon conversion catalysts |
| US3849293A (en) * | 1971-03-05 | 1974-11-19 | Union Oil Co | Hydrocracking process utilizing rejuvenated catalyst |
| US4139433A (en) * | 1973-02-22 | 1979-02-13 | Union Oil Company Of California | Hydrocracking process with aqueous ammonia rejuvenated zeolite catalyst comprising non-zeolitic noble metal |
| US3943051A (en) * | 1974-05-17 | 1976-03-09 | Union Oil Company Of California | Hydrocarbon conversion processes utilizing rejuvenated zeolite catalysts |
| FR2323664A1 (fr) * | 1975-09-10 | 1977-04-08 | Erap | Procede de deshydrocyclisation d'hydrocarbures aliphatiques |
| US4107031A (en) * | 1976-09-16 | 1978-08-15 | Union Oil Company Of California | Hydrocracking process with reactivated catalyst |
| US4147660A (en) * | 1976-12-22 | 1979-04-03 | Osaka Gas Company, Ltd. | Method for reactivation of platinum group metal catalyst with aqueous alkaline and/or reducing solutions |
| FR2498477B1 (fr) * | 1981-01-26 | 1986-06-27 | Inst Francais Du Petrole | Nouveau procede de regeneration-rejuvenation d'un catalyseur zeolithique contenant un metal hydrogenant |
| FR2512356B1 (fr) * | 1981-09-09 | 1986-08-08 | Elf Aquitaine | Procede de regeneration d'un catalyseur d'aromatisation |
| US4447316A (en) * | 1982-02-01 | 1984-05-08 | Chevron Research Company | Composition and a method for its use in dehydrocyclization of alkanes |
| US4550090A (en) * | 1983-08-26 | 1985-10-29 | Mobil Oil Corporation | Regeneration of ZSM-5 type catalyst with a source of alkali or alkaline earth metal cations or ammonia |
-
1985
- 1985-11-07 NL NL8520394A patent/NL8520394A/nl unknown
- 1985-11-07 DE DE19853590575 patent/DE3590575T1/de not_active Withdrawn
- 1985-11-07 CA CA000494758A patent/CA1257245A/en not_active Expired
- 1985-11-07 WO PCT/US1985/002218 patent/WO1986002861A1/en not_active Application Discontinuation
- 1985-11-07 EP EP19850905984 patent/EP0204750A4/en not_active Withdrawn
- 1985-11-07 GB GB08612723A patent/GB2176716A/en not_active Withdrawn
- 1985-11-07 AU AU52016/86A patent/AU5201686A/en not_active Abandoned
-
1986
- 1986-06-11 KR KR1019860700348A patent/KR870700404A/ko not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| GB2176716A (en) | 1987-01-07 |
| EP0204750A1 (en) | 1986-12-17 |
| DE3590575T1 (de) | 1986-11-20 |
| AU5201686A (en) | 1986-06-03 |
| WO1986002861A1 (en) | 1986-05-22 |
| CA1257245A (en) | 1989-07-11 |
| EP0204750A4 (en) | 1987-12-02 |
| GB8612723D0 (en) | 1986-07-02 |
| KR870700404A (ko) | 1987-12-29 |
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