ES8707566A1 - Un procedimiento para extraer uno o mas metales de transicion de un medio organico - Google Patents

Un procedimiento para extraer uno o mas metales de transicion de un medio organico

Info

Publication number
ES8707566A1
ES8707566A1 ES556195A ES556195A ES8707566A1 ES 8707566 A1 ES8707566 A1 ES 8707566A1 ES 556195 A ES556195 A ES 556195A ES 556195 A ES556195 A ES 556195A ES 8707566 A1 ES8707566 A1 ES 8707566A1
Authority
ES
Spain
Prior art keywords
transition metals
extraction
organic solutions
cyclic phosphate
metals
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
Application number
ES556195A
Other languages
English (en)
Other versions
ES556195A0 (es
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of ES8707566A1 publication Critical patent/ES8707566A1/es
Publication of ES556195A0 publication Critical patent/ES556195A0/es
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/40Regeneration or reactivation
    • B01J31/4015Regeneration or reactivation of catalysts containing metals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/16Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
    • B01J31/18Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony as complexing atoms, e.g. in pyridine ligands, or in resonance therewith, e.g. in isocyanide ligands C=N-R or as complexed central atoms
    • B01J31/1845Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes containing nitrogen, phosphorus, arsenic or antimony as complexing atoms, e.g. in pyridine ligands, or in resonance therewith, e.g. in isocyanide ligands C=N-R or as complexed central atoms the ligands containing phosphorus
    • B01J31/185Phosphites ((RO)3P), their isomeric phosphonates (R(RO)2P=O) and RO-substitution derivatives thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/16Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
    • B01J31/20Carbonyls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/16Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
    • B01J31/22Organic complexes
    • B01J31/2204Organic complexes the ligands containing oxygen or sulfur as complexing atoms
    • B01J31/2208Oxygen, e.g. acetylacetonates
    • B01J31/2226Anionic ligands, i.e. the overall ligand carries at least one formal negative charge
    • B01J31/223At least two oxygen atoms present in one at least bidentate or bridging ligand
    • B01J31/2234Beta-dicarbonyl ligands, e.g. acetylacetonates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/16Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
    • B01J31/22Organic complexes
    • B01J31/2282Unsaturated compounds used as ligands
    • B01J31/2295Cyclic compounds, e.g. cyclopentadienyls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/16Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
    • B01J31/24Phosphines, i.e. phosphorus bonded to only carbon atoms, or to both carbon and hydrogen atoms, including e.g. sp2-hybridised phosphorus compounds such as phosphabenzene, phosphole or anionic phospholide ligands
    • B01J31/2404Cyclic ligands, including e.g. non-condensed polycyclic ligands, the phosphine-P atom being a ring member or a substituent on the ring
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/40Regeneration or reactivation
    • B01J31/4015Regeneration or reactivation of catalysts containing metals
    • B01J31/4023Regeneration or reactivation of catalysts containing metals containing iron group metals, noble metals or copper
    • B01J31/403Regeneration or reactivation of catalysts containing metals containing iron group metals, noble metals or copper containing iron group metals or copper
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/40Regeneration or reactivation
    • B01J31/4015Regeneration or reactivation of catalysts containing metals
    • B01J31/4023Regeneration or reactivation of catalysts containing metals containing iron group metals, noble metals or copper
    • B01J31/4038Regeneration or reactivation of catalysts containing metals containing iron group metals, noble metals or copper containing noble metals
    • B01J31/4046Regeneration or reactivation of catalysts containing metals containing iron group metals, noble metals or copper containing noble metals containing rhodium
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G31/00Compounds of vanadium
    • C01G31/003Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G45/00Compounds of manganese
    • C01G45/003Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G5/00Compounds of silver
    • C01G5/003Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G51/00Compounds of cobalt
    • C01G51/003Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G55/00Compounds of ruthenium, rhodium, palladium, osmium, iridium, or platinum
    • C01G55/001Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G7/00Compounds of gold
    • C01G7/003Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/49Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reaction with carbon monoxide
    • C07C45/50Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reaction with carbon monoxide by oxo-reactions
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/78Separation; Purification; Stabilisation; Use of additives
    • C07C45/80Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/26Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
    • C22B3/38Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
    • C22B3/387Cyclic or polycyclic compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2531/00Additional information regarding catalytic systems classified in B01J31/00
    • B01J2531/50Complexes comprising metals of Group V (VA or VB) as the central metal
    • B01J2531/56Vanadium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2531/00Additional information regarding catalytic systems classified in B01J31/00
    • B01J2531/70Complexes comprising metals of Group VII (VIIB) as the central metal
    • B01J2531/72Manganese
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2531/00Additional information regarding catalytic systems classified in B01J31/00
    • B01J2531/80Complexes comprising metals of Group VIII as the central metal
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2531/00Additional information regarding catalytic systems classified in B01J31/00
    • B01J2531/80Complexes comprising metals of Group VIII as the central metal
    • B01J2531/82Metals of the platinum group
    • B01J2531/822Rhodium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2531/00Additional information regarding catalytic systems classified in B01J31/00
    • B01J2531/80Complexes comprising metals of Group VIII as the central metal
    • B01J2531/82Metals of the platinum group
    • B01J2531/824Palladium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2531/00Additional information regarding catalytic systems classified in B01J31/00
    • B01J2531/80Complexes comprising metals of Group VIII as the central metal
    • B01J2531/84Metals of the iron group
    • B01J2531/845Cobalt
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/584Recycling of catalysts
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S423/00Chemistry of inorganic compounds
    • Y10S423/09Reaction techniques
    • Y10S423/14Ion exchange; chelation or liquid/liquid ion extraction

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

PROCEDIMIENTO PARA EXTRAER UNO O MAS METALES DE TRANSICION DE UN MEDIO ORGANICO. COMPRENDE: A) RECOGER EL MEDIO ORGANICO RESULTANTE DE LA HIDROFORMILACION DE UN COMPUESTO ETILENICAMENTE INSATURADO CON MONOXIDO DE CARBONO E HIDROGENO EN PRESENCIA DE UN COMPUESTO DE FOSFORO TRIVALENTE Y COMPONENTE CATALITICO, PARA OBTENCION DE ALDEHIDOS, EN FORMA COMPLEMA; Y B) PONER EN CONTACTO AL MEDIO ORGANICO EN FORMA COMPLEJA CON UNA FASE ACUOSA EN PRESENCIA DE FOSFITO BICICLICO DE FORMULA (I). EL MEDIO ORGANICO CONTIENE RODIO O COBALTO, EL COMPUESTO DE FOSFORO TRIVALENTE ES FOSFINA. SIENDO R, H O ALQUILO DE C 3.
ES556195A 1985-06-20 1986-06-18 Un procedimiento para extraer uno o mas metales de transicion de un medio organico Expired ES8707566A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB858515656A GB8515656D0 (en) 1985-06-20 1985-06-20 Extraction of group metals from organic solutions

Publications (2)

Publication Number Publication Date
ES8707566A1 true ES8707566A1 (es) 1987-08-01
ES556195A0 ES556195A0 (es) 1987-08-01

Family

ID=10581062

Family Applications (1)

Application Number Title Priority Date Filing Date
ES556195A Expired ES8707566A1 (es) 1985-06-20 1986-06-18 Un procedimiento para extraer uno o mas metales de transicion de un medio organico

Country Status (9)

Country Link
US (1) US4680168A (es)
EP (1) EP0206377B1 (es)
JP (1) JPH076007B2 (es)
AT (1) ATE79858T1 (es)
CA (1) CA1295486C (es)
DE (1) DE3686517T2 (es)
ES (1) ES8707566A1 (es)
GB (1) GB8515656D0 (es)
ZA (1) ZA864540B (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3744213A1 (de) * 1987-12-24 1989-07-06 Ruhrchemie Ag Verfahren zur rueckgewinnung von rhodium aus rhodiumkomplexverbindungen enthaltenden waessrigen loesungen
US5340881A (en) * 1992-11-16 1994-08-23 The University Of Akron Aldehyde-telechelic polyisobutylenes, catalytic method for preparing the same with high conversion and selectivity, and block copolymers made thereform
US6756411B2 (en) 1995-06-29 2004-06-29 Sasol Technology (Proprietary) Limited Process for producing oxygenated products
US9008744B2 (en) * 2011-05-06 2015-04-14 Medtronic Minimed, Inc. Method and apparatus for continuous analyte monitoring

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725483A (en) * 1966-08-23 1973-04-03 Gulf Research Development Co A process for the hydroformylation of olefins
US3882018A (en) * 1970-12-04 1975-05-06 Aerojet General Co Process for recovery of minerals from acidic streams
US3966595A (en) * 1972-07-20 1976-06-29 E. I. Du Pont De Nemours And Company Method of making group VIII metal complex compounds
JPS535879B2 (es) * 1973-08-14 1978-03-02
EP0007768A3 (en) * 1978-07-27 1980-02-20 DAVY McKEE (LONDON) LIMITED Hydroformylation of alpha-olefinic compounds
US4298499A (en) * 1980-07-14 1981-11-03 Uop Inc. Recovery of catalysts
US4390473A (en) * 1981-06-22 1983-06-28 Eastman Kodak Company Recovery of rhodium and cobalt low pressure oxo catalyst
US4434240A (en) * 1981-11-16 1984-02-28 The Halcon Sd Group, Inc. Recovery of noble metal values from carbonylation residues
DE3371067D1 (en) * 1982-06-11 1987-05-27 Davy Mckee London Hydroformylation process
DE3234701A1 (de) * 1982-09-18 1984-04-05 Ruhrchemie Ag, 4200 Oberhausen Verfahren zur herstellung von aldehyden
DE3347406A1 (de) * 1983-12-29 1985-07-11 Ruhrchemie Ag, 4200 Oberhausen Verfahren zur abtrennung und wiedergewinnung von rhodium aus den produkten der oxosynthese
US4605541A (en) * 1985-08-26 1986-08-12 The Halcon Sd Group, Inc. Recovery of noble metal values from carbonylation residues using immiscible liquids

Also Published As

Publication number Publication date
JPH076007B2 (ja) 1995-01-25
JPS61295333A (ja) 1986-12-26
DE3686517T2 (de) 1993-01-28
EP0206377A2 (en) 1986-12-30
DE3686517D1 (de) 1992-10-01
ZA864540B (en) 1987-01-28
EP0206377B1 (en) 1992-08-26
GB8515656D0 (en) 1985-07-24
ATE79858T1 (de) 1992-09-15
US4680168A (en) 1987-07-14
CA1295486C (en) 1992-02-11
ES556195A0 (es) 1987-08-01
EP0206377A3 (en) 1988-05-18

Similar Documents

Publication Publication Date Title
AU572716B2 (en) Liquid - liquid extraction of alkaline earth salts
DE3581521D1 (de) Fluessig-fluessig-extraktionsverfahren von zink.
ES478379A1 (es) Un procedimiento de separacion por extraccion de una solu- cion acuosa de al menos un elemento seleccionado entre el grupo constituido por las tierras raras y el itrio.
ES8707566A1 (es) Un procedimiento para extraer uno o mas metales de transicion de un medio organico
EP0389631A4 (en) Process for preparing dibenzocyclooctadiene type lignan
JPS5394130A (en) Printing recorder
AU576666B2 (en) Separation of cerium ions from other rare-earths
NO871840D0 (no) Emulgeringsmiddel, saerlig for petroleumsutvinning.
JPS533044A (en) Page discrimination system for bankbook
ES8507353A1 (es) Procedimiento para la separacion del arsenico de soluciones acuosas acidas que lo contengan
JPS51138105A (en) Voice recognition system
JPS5226555A (en) Method for recovering polyamides
JPS5335334A (en) Reading line control system
JPS51131900A (en) A method for purifying stevioside
EP0057699A4 (en) 5,6-O-ISOALKYLIDENE ASCORBIC ACID DERIVATIVES.
JPS5377513A (en) Clock regenerating system
AU4368189A (en) Recovery of metal values from aqueous solutions
JPS5233168A (en) Recovering device of oil
JPS5216153A (en) Code convertor
JPS5253603A (en) Code discrimination system
JPS5219877A (en) Sampling controlling method
JPS5343435A (en) Pattern recognition system
JPS52119499A (en) Production of compounds of rare earth elements
JPS5267920A (en) Information reading control system
MX9605220A (es) Recuperacion de maltol.

Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19990201