IT7852425A0 - Processo per togliere il selenio da soluzioni uretaniche - Google Patents

Processo per togliere il selenio da soluzioni uretaniche

Info

Publication number
IT7852425A0
IT7852425A0 IT7852425A IT5242578A IT7852425A0 IT 7852425 A0 IT7852425 A0 IT 7852425A0 IT 7852425 A IT7852425 A IT 7852425A IT 5242578 A IT5242578 A IT 5242578A IT 7852425 A0 IT7852425 A0 IT 7852425A0
Authority
IT
Italy
Prior art keywords
removing selenium
urethane solutions
urethane
solutions
selenium
Prior art date
Application number
IT7852425A
Other languages
English (en)
Other versions
IT1111386B (it
Original Assignee
Atlantic Richfield Co
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 Atlantic Richfield Co filed Critical Atlantic Richfield Co
Publication of IT7852425A0 publication Critical patent/IT7852425A0/it
Application granted granted Critical
Publication of IT1111386B publication Critical patent/IT1111386B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B19/00—Selenium; Tellurium; Compounds thereof
    • C01B19/004—Oxides; Hydroxides
    • 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
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/28—Regeneration or reactivation
    • B01J27/30—Regeneration or reactivation of catalysts comprising compounds of sulfur, selenium or tellurium
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B19/00—Selenium; Tellurium; Compounds thereof
    • C01B19/001—Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/584—Recycling of catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Extraction Or Liquid Replacement (AREA)
IT52425/78A 1977-12-27 1978-12-22 Processo per togliere il selenio da soluzioni uretaniche IT1111386B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/864,172 US4130633A (en) 1977-12-27 1977-12-27 Removal of selenium from urethane solutions

Publications (2)

Publication Number Publication Date
IT7852425A0 true IT7852425A0 (it) 1978-12-22
IT1111386B IT1111386B (it) 1986-01-13

Family

ID=25342677

Family Applications (1)

Application Number Title Priority Date Filing Date
IT52425/78A IT1111386B (it) 1977-12-27 1978-12-22 Processo per togliere il selenio da soluzioni uretaniche

Country Status (9)

Country Link
US (1) US4130633A (it)
JP (1) JPS54100924A (it)
BE (1) BE873044A (it)
CA (1) CA1100285A (it)
DE (1) DE2856219A1 (it)
FR (1) FR2413322A1 (it)
GB (1) GB2010820B (it)
IT (1) IT1111386B (it)
NL (1) NL7812486A (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2808990A1 (de) * 1978-03-02 1979-09-13 Bayer Ag Verfahren zur herstellung von urethanen
DE2808980A1 (de) * 1978-03-02 1979-09-13 Bayer Ag Verfahren zur herstellung von urethanen
DE2904929A1 (de) * 1979-02-09 1980-08-21 Bayer Ag Verfahren zur abtrennung von selen, selenverbindungen, schwefel und/oder schwefelverbindungen aus diese elemente bzw. verbindungen aufweisenden polyurethanen
US4935146A (en) * 1988-11-15 1990-06-19 Aluminum Company Of America Method for removing arsenic or selenium from an aqueous solution containing a substantial background of another contaminant
US5204072A (en) * 1991-09-06 1993-04-20 University Of California Production of selenium-72 and arsenic-72
US6183644B1 (en) 1999-02-12 2001-02-06 Weber State University Method of selenium removal

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1915703A (en) * 1932-05-18 1933-06-27 Texas Co Recovery of spent selenium
FR1441618A (fr) * 1965-04-26 1966-06-10 Electrochimie Soc Perfectionnements à la fabrication d'acides éthylèniques à partir d'aldéhydes non saturés
FR1509084A (fr) * 1966-11-29 1968-01-12 Electro Chimie Soc D Procédé de récupération de sélénium iv utilisé comme catalyseur d'oxydation en solution
US3895054A (en) * 1972-08-30 1975-07-15 Atlantic Richfield Co Process for the manufacture of urethanes
US4055630A (en) * 1975-08-12 1977-10-25 Atlantic Richfield Company Process for the recovery of selenium from urethanes containing selenium or compounds thereof
US4038376A (en) * 1975-08-12 1977-07-26 Atlantic Richfield Company Process for the recovery of selenium from urethanes containing selenium or compounds thereof
US4041139A (en) * 1976-08-30 1977-08-09 Atlantic Richfield Company Recovery of selenium from urethane solutions
US4038375A (en) * 1976-09-15 1977-07-26 Atlantic Richfield Company Process for the recovery of selenium from selenium-containing urethane solutions
US4038377A (en) * 1976-09-29 1977-07-26 Atlantic Richfield Company Removal of selenium from urethane solutions
US4055629A (en) * 1976-12-13 1977-10-25 Atlantic Richfield Company Process for the removal of selenium compounds from urethane solutions

Also Published As

Publication number Publication date
GB2010820B (en) 1982-06-16
NL7812486A (nl) 1979-06-29
IT1111386B (it) 1986-01-13
FR2413322A1 (fr) 1979-07-27
GB2010820A (en) 1979-07-04
CA1100285A (en) 1981-05-05
DE2856219A1 (de) 1979-07-05
US4130633A (en) 1978-12-19
JPS54100924A (en) 1979-08-09
BE873044A (fr) 1979-06-22

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