WO1997005944A1 - Sorbant pour oxygene et son procede de production - Google Patents

Sorbant pour oxygene et son procede de production Download PDF

Info

Publication number
WO1997005944A1
WO1997005944A1 PCT/DE1996/001414 DE9601414W WO9705944A1 WO 1997005944 A1 WO1997005944 A1 WO 1997005944A1 DE 9601414 W DE9601414 W DE 9601414W WO 9705944 A1 WO9705944 A1 WO 9705944A1
Authority
WO
WIPO (PCT)
Prior art keywords
lithium
oxygen
sorbents
complex
sorbent
Prior art date
Application number
PCT/DE1996/001414
Other languages
German (de)
English (en)
Inventor
Grete Bach
Gudrun KÖTTER
Sinaida Tichonova Dimitrieva
Original Assignee
Ifn Gmbh
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 Ifn Gmbh filed Critical Ifn Gmbh
Publication of WO1997005944A1 publication Critical patent/WO1997005944A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
    • C07F5/02—Boron compounds
    • C07F5/04—Esters of boric acids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
    • B01J20/0248—Compounds of B, Al, Ga, In, Tl
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/223—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material containing metals, e.g. organo-metallic compounds, coordination complexes
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3425—Regenerating or reactivating of sorbents or filter aids comprising organic materials
    • 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
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/34—Regenerating or reactivating
    • B01J20/3483—Regenerating or reactivating by thermal treatment not covered by groups B01J20/3441 - B01J20/3475, e.g. by heating or cooling
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/02—Preparation of oxygen
    • C01B13/0229—Purification or separation processes
    • C01B13/0248—Physical processing only
    • C01B13/0259—Physical processing only by adsorption on solids
    • C01B13/0262—Physical processing only by adsorption on solids characterised by the adsorbent
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B23/00—Noble gases; Compounds thereof
    • C01B23/001—Purification or separation processes of noble gases
    • C01B23/0036—Physical processing only
    • C01B23/0052—Physical processing only by adsorption in solids
    • C01B23/0057—Physical processing only by adsorption in solids characterised by the adsorbent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/10—Single element gases other than halogens
    • B01D2257/104—Oxygen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0029—Obtaining noble gases
    • C01B2210/0034—Argon
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2210/00—Purification or separation of specific gases
    • C01B2210/0043—Impurity removed
    • C01B2210/0045—Oxygen

Definitions

  • the invention relates to sorbents for oxygen on the basis of a new class of substances not previously used for this application and to a process for their production which differs from the classical synthesis processes of this class of substances.
  • the sorbents are suitable as adsorbents for cleaning inert gas and can be regenerated after use
  • a method which has been known and used for a very long time is based on the use of metals and metal oxides which chemically bind the oxygen to be removed from a gas mixture. Very different metals can be used for this, with metals and metal oxides generally being applied to carrier materials.
  • Chromium (DE 1 657 129) or Geltem made of metal alloys (DE 3 926 015) requires high temperatures of up to 1000 ° C for effective cleaning, and a reduction of the foreign gases to less than 1 ppm is not possible in all of the processes mentioned, which means the pure ⁇ does not meet the purity gas requirements for many areas of application.
  • activated carbon as described in DE 3 825 725, or of molecular sieve cokes
  • molecular sieves have often been proposed (DE 3 632 995, DE 2 400492) in order to remove oxygen and other gaseous impurities from noble and inert gases.
  • molecular sieves generally only remove impurities that correspond to the respective pore volume of the zeolite. Multiple impurities can therefore only be removed using various molecular sieves or other sorbents, the production of which is complex and expensive and which necessitates complicated cleaning technology.
  • the absorption capacity of such metallic or oxidic sorbents is also not very high, so that regeneration is necessary in short periods of time.
  • a fundamental disadvantage of molecular sieve sorbents is also that it is only possible with great effort
  • lithium boron complexes have been described which are said to be suitable for the adsorption of carbon dioxide. They consist exclusively of B, lithium (or another alkali or alkaline earth metal) and oxygen and are intended for use in life-saving systems. They are based on the principle that the amounts of up to 30% of oxygen built into the structure of the lithium-boron complex as hydroxides, oxides, peroxides, superoxides or ozonides are deliberately exchanged for CO 2 if required. whereby oxygen is released. These systems, which can only be produced and used under extreme reaction conditions using ultra-high vacuum and which are also very unstable, are not suitable and are not intended for gas purification.
  • the invention is therefore based on the object of finding sorbents which overcome the disadvantages of the known sorption processes, have a considerably higher absorption capacity for trace impurities in comparison with known sorbents, which are simple to produce and use and whose sorption capacity is slightly different for different purposes can be adjusted
  • the object is achieved by using coordination complexes containing lithium and boron as sorbents, a class of substances which has been known for a long time (Hollemann-Wiberg, Textbook of Organic Chemistry, 91st-100th edition, Berlin , New York 1985, pp. 834/835), but has not previously been used for the removal of gaseous trace contaminants from inert gases.
  • the new sorbent class has surprisingly excellent application properties and far exceeds the absorption characteristics of known sorbent systems.
  • Complexes of the general formula Li [B (OX) J (lithium borates) and LifBXJ (lithium boranes) have proven to be particularly suitable for the application described.
  • X can be an alkyl substituent with a normal or iso structure, but also an aryl radical. Coordinating complexes of the structure given, in which X is an aryl radical, surprisingly show higher absorption capacities for impurities than complexes in which X are alkyl substituents. In the case of complexes with alkyl substituents, the sorption capacity decreases with increasing chain length and remains constant in the case of alkyl substituents with C numbers> 8. The use of sorbent complexes with alkyl substituents> C g H ] 7 is therefore not expedient. However, even for such complexes, the sorption capacity is still considerably above the values which are achieved with known sorbents, for example with molecular sieves
  • the coordination complexes of the general formulas Li [B (OX) J and LifBXJ can be used both as individual compounds and as mixtures of compounds of both types of complexes with the same or different substituents X, the mixture composition being chosen as desired can, without the sorption ability deteriorating.
  • a lithium-boron complex with fluorine substituents can also be used as a sorbent for the adsorption of trace impurities. It has an even greater absorption capacity than the lithium borate and lithium borane complexes.
  • All the sorbents mentioned can be easily regenerated by heating them to 250 ° C. If the thermal desorption is carried out in a vacuum at 0.02 - 0.05 Pa, the desorption temperature can be reduced to 150 - 180 ° C.
  • the lithium borate and lithium borane complexes retain their adsorption capacity over 12 - 15 use / regeneration cycles. LifBFJ has a practically unlimited service life and achieves a high adsorption capacity without any thermal preactivation.
  • the new sorbent class according to the invention has greatly improved adsorption properties compared to known sorbents. Their absorption capacity and the absorption speed are considerably higher, so that trace impurities can be removed from gases quickly and with a great depth of purification.
  • Another advantage of the new sorbent class is the simple manufacturing and regeneration technology.
  • a significant advantage over known sorbents is also the possibility of tailoring the properties of the sorbent to specific applications by using complex mixtures.
  • the sorbents according to the invention and their production methods are described below using examples.
  • the sample was again subjected to a vacuum at 20-25 ° C. in order to remove free gaseous and physically adsorbed oxygen.
  • the chemosorbed oxygen was expelled by slowly heating the sample (at a linear heating rate of 13-15 ° C./min at 230-250 ° C.
  • the amount of thermally desorbed oxygen was determined by gas chromatography and gravimetry. It was 0.225 g (0.007 mol ) O 2 , that is 45% by mass based on the weight of the sorbent.
  • the chemosorbed oxygen was heated to 220 ° C by slowly heating the sample at a linear heating rate of 13 - 15 ° C / min.
  • the amount of thermally desorbed oxygen was 0.192 g (0.006 mole), which is 20.64 mass% based on the weight of the sorbent.
  • the regenerated sorbent complex was subjected again to the chemoso ⁇ tion with oxygen under the conditions specified above after the thermodeso ⁇ tion.
  • the amount of thermally desorbed oxygen in the second So ⁇ tions- / Deso ⁇ tions cycle increased by 0.048 g (5.15%) and was 25.8% based on the mass of the sorbent complex.
  • 0.5 g (0.0011 mole) of the complex was first kept in a vacuum at 0.018-0.02 Pa and then exposed to an oxygen atmosphere at 20-25 ° C. under normal pressure in order to determine the oxygen uptake. After a holding time of 40 minutes, the complex sample was again kept in a vacuum at 23 ° C. in order to remove free and physically adsorbed oxygen. The chemosorbed oxygen was expelled by slowly heating the sample at a linear heating rate of 13-15 ° C./min at 245 ° C. The amount of thermally desorbed oxygen was 0.07 g (0.0022 moles), which is 11.68 mass% of the weight of the sorbent complex. The regenerated sorbent was subjected again to the chemoso ⁇ tion with oxygen under the conditions specified above after the thermodose.
  • the amount of thermally desorbed oxygen in the second So ⁇ tions-ZDeso ⁇ tions cycle increased to 0.023 g (3.87%) and was 15.73% based on the mass of the sorbent.
  • the amount of thermally desorbed oxygen was determined by gas chromatography to 0.122 g (0.0038 mole) O 2 , which is 15.25% based on the weight of the sorbent.
  • the thermal pretreatment of the sorbent in a vacuum at 120 ° C increased the oxygen chemoso ⁇ tion by 3.4%.
  • Example 4 Synthesis of lithium tert-butyl tributyl borate 2.0 g (0.025 mole) of tert-lithium butoxide (tert-C 4 H 9 Li) were introduced into a glass flask or a grinding bowl and were rapidly mixed or ground 5.75 g (0.025 mole) of boron tributyl oxide B (OC 4 H 9 ) 3 were added. The synthesis of the sorbent complex was carried out in a hermetic chamber in an argon or high-purity nitrogen atmosphere. The reaction proceeds with the development of heat. The reaction mixture is then heated to 42.degree. It changes into a solid monolithic block, which after a rest period of 1 - 1.5 hours when shaken, disintegrates into very fine crystals of white color.
  • tert-C 4 H 9 Li tert-lithium butoxide
  • the amount of thermally desorbed oxygen was 0.205 g (0.0064 mole), which is 20.67 mass% based on the weight of the sorbent.
  • the sorbent complex regenerated in this way was then subjected again to chemo-so ⁇ tion with oxygen under the conditions specified above and later heated again.
  • the amount of oxygen thermally sorbed in the second So ⁇ tions- / Deso ⁇ tions cycle increased by 0.038 g (3.8%) and was 24.47% based on the mass of the sorbent used.
  • the complex sample was then again held at 23 ° C under vacuum to remove excess oxygen and physically adsorbed oxygen.
  • the oxygen chemosorbed on the complex was expelled by slowly heating the sample in vacuo (0.03-0.04 Pa) to 170 ° C. over a period of 1.5 h - 2 h.
  • the amount of the thermally desorbed oxygen was 0.298 g (0.0093 moles), which is 25.25% based on the mass of the sorbent complex.
  • the thermal pretreatment of the sorbent in a vacuum at 1 15 ° C increased the oxygen chemoso ⁇ tion by 4.58% compared to the test without thermal test treatment.
  • the sorbent sample was again kept at 22 ° C. in a vacuum in order to remove free gaseous and physically adsorbed oxygen.
  • the chemo-sorbed oxygen was expelled by slowly heating the sample at a linear heating rate of 13 - 15 ° C / min to 240 ° C.
  • the amount of thermally desorbed oxygen was 0.168 g (0.0058 moles), which is 22.04% by mass based on the sorbent complex.
  • the amount of chemosorbed oxygen on the sorbent complex was determined by gas chromatography. 5
  • the regenerated sorbent complex was again chemo- so ⁇ tion subjected to oxygen under the conditions specified above.
  • Example 6 Synthesis of lithium-tert-butyltribenzylbor
  • a glass or porcelain reactor which was installed in a hermetic chamber
  • 5.68 g (0.02 moles) of tribenzylboron B (CJH 2 C 6 H J ) 3 were introduced and in addition 1.28 g (0.02 mole) of tert-butyllithium (C 4 H, Li) were added simultaneously in small batches, with constant mixing, using a metering device.
  • the reaction was carried out under an argon atmosphere. The reaction took place with the development of heat.
  • the temperature in the reaction zone was kept at 18-20 ° C. via the metering rate or by cooling the reactor.
  • a partial sample of the complex namely 0.696 g (0.002 moles), was subjected to a vacuum at 0.03 Pa and then kept in an oxygen atmosphere at 23 ° C. under normal pressure for 45 minutes. After the oxygen uptake, the complex sample was again kept in a vacuum at 23 ° C. in order to remove free gaseous and physically adsorbed oxygen.
  • the chemosorbed oxygen was expelled to 150 ° C. by slowly heating the sample at a linear heating rate of 13-15 ° C./min in a vacuum (0.02 Pa).
  • the amount of thermally desorbed oxygen was 0.16 g (0.05 mole), which is 23.0% by mass based on the mass of the sorbent.
  • the amount of chemosorbed oxygen on the sorbent complex was determined by gas chromatography.
  • the sorbent complex regenerated in the manner described was then subjected to a second chemoso ⁇ tion stage with oxygen under the conditions described above. No increase in the thermodesorbed oxygen was observed in the second desorption cycle.
  • the sorbent complex was stored either in vacuo or under argon.
  • thermodesorbed oxygen was 0.064 g (0.02 mole), which is 13.62% by mass. based on the mass of the sorbent complex.
  • the regenerated sorbent complex was again subjected to the chemoso ⁇ tion with oxygen under the conditions described above after the thermodeso ⁇ tion.
  • the amount of thermally desorbed oxygen increased in the second So ⁇ tions- / Deso ⁇ tions cycle by 0.06 g (1.08%) and was 14.7% of the mass of the sorbent complex.
  • Example 8 Synthesis of lithium boron tetrafluoride
  • the complex [BFJLi is a commercial product and was used without further pretreatment for the oxygen soapy.
  • a sample of the complex in an amount of 0.376 g (0.004 moles) was first kept under vacuum (0.025 Pa) and then exposed to an oxygen atmosphere at 22 ° C. for 45 minutes under normal pressure.
  • the complex was then kept under vacuum again in order to remove free gaseous oxygen and physically adsorbed oxygen.
  • the chemosorbed oxygen was then heated by slowly heating the sample to 240 ° C. at a linear heating rate of 13-15 ° C./min in the course of 1.5 hours.
  • the amount of thermally desorbed oxygen was determined by gas chromatography and was 0.256 g (0.08 mole), which is 68.1% of the mass of the sorbent complex.
  • the regenerated sorbent complex was again exposed to an oxygen chemoso ⁇ tion under the conditions described above.
  • the amount of thermosorbed oxygen did not change in the second absorption / deodorization cycle.
  • the suitability of the sorbents for eliminating oxygen from argon was tested under dynamic conditions.
  • 0.31 g (0.001 mole) of the complex was applied to a filter through which argon with an oxygen content of 0.2% by mass flowed over a period of 2-2.5 hours.
  • the oxygen sorbed on the complex was driven off by heating the sorbent to 150 ° C.
  • the amount of thermally desorbed oxygen was determined gravimetrically to be 0.019 g (0.0006 mole oxygen), which is 6% based on the mass of the sorbent complex.
  • the sorbent complex was tested again for its absorption effects for oxygen in the filtration of oxygen-containing argon under the conditions mentioned above.
  • the sorbed oxygen was expelled by heating the sorbent to 150 ° C and determined gravimetrically to 0.0248 g (0.0008 mole oxygen), which is 8% of the mass of the sorbent complex.
  • the filtered argon no longer contained any traces of oxygen which could be detected by gas chromatography.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

L'invention concerne des sorbants aptes à éliminer l'oxygène et d'autres impuretés contenus dans des gaz techniques. L'invention vise à mettre au point des sorbants présentant, comparativement aux sorbants connus tels que des éléments filtrants molaires, des métaux et des oxydes métalliques ou des charbons actifs, des capacités de rétention considérables pour des impuretés à l'état de traces, qui soient faciles à produire et dont la capacité de sorption puisse être aisément adaptée à différentes fins d'utilisation. A cet effet, on utilise, comme sorbants, des complexes de coordination contenant du lithium et du bore, avec une préférence pour les complexes du type Li [B(OX)4] (borates de lithium) et Li[BX4] (boranes de lithium), où X = n- et/ou iso- CH3-C8H17 ou C6H5, et Li[BF4] ou des mélanges de ces complexes. Les complexes mentionnés sont produits au cours d'une réaction en phase solide à 45 - 50 °C et peuvent s'utiliser comme composés individuels ou comme mélanges de n'importe quel composé individuel de la structure mentionnée, selon n'importe quelle combinaison. Un traitement thermique à des températures < 120 °C et à des pressions comprises entre 0,05 et 0,03 Pa permet d'augmenter la capacité d'adsorption. Les sorbants usagés peuvent être régénérés par chauffage à 250 °C à pression normale ou à des températures comprises entre 150 et 180 °C, à des pressions comprises entre 0,02 et 0,05 Pa, afin d'être utilisés à nouveau pour purifier des gaz.
PCT/DE1996/001414 1995-08-04 1996-07-30 Sorbant pour oxygene et son procede de production WO1997005944A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19528783.5 1995-08-04
DE1995128783 DE19528783A1 (de) 1995-08-04 1995-08-04 Sorbent für Sauerstoff und Verfahren zu seiner Herstellung und Regenerierung

Publications (1)

Publication Number Publication Date
WO1997005944A1 true WO1997005944A1 (fr) 1997-02-20

Family

ID=7768756

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1996/001414 WO1997005944A1 (fr) 1995-08-04 1996-07-30 Sorbant pour oxygene et son procede de production

Country Status (2)

Country Link
DE (1) DE19528783A1 (fr)
WO (1) WO1997005944A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8058480B2 (en) 2009-04-30 2011-11-15 E. I. Du Pont De Nemours And Company Process for the alkoxylation of alcohols
US8058481B2 (en) 2009-04-30 2011-11-15 E.I. Du Pont De Nemours And Company Alkyl alkoxylates containing unique end groups
US8067329B2 (en) 2009-04-30 2011-11-29 E. I. Du Pont De Nemours And Company Boron-based catalysts

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879590A (ja) * 1981-11-05 1983-05-13 Kurita Water Ind Ltd 溶存酸素の除去方法
US4512960A (en) * 1983-12-29 1985-04-23 The United States Of America As Represented By The United States Department Of Energy Method of gas purification and system therefor
US4603148A (en) * 1983-05-12 1986-07-29 Hercules Incorporated Macroreticulate polymer scavengers for the removal of impurities from inert fluids
EP0283961A2 (fr) * 1987-03-24 1988-09-28 Millipore Investment Holdings Limited Procédé et composition pour la purification d'arsine, de phosphine, d'ammoniac et gaz inertes pour enlever des acides de Lewis et des impuretés oxydantes de ceux-ci
JPH0340995A (ja) * 1989-07-07 1991-02-21 Tokuyama Soda Co Ltd Ｌｉ↓２Ｂ↓４Ｏ↓７結晶体の製造方法
EP0428898A1 (fr) * 1989-10-25 1991-05-29 Mitsubishi Gas Chemical Company, Inc. Adsorbent pour l'oxygène
DE19528784C1 (de) * 1995-08-04 1996-08-29 Inst Neuwertwirtschaft Gmbh Verfahren zur Reinigung von Inertgasen mittels Sorbenzien

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4238464A (en) * 1978-08-09 1980-12-09 The United States Of America As Represented By The Secretary Of The Navy Air revitalization materials
US4867956A (en) * 1988-03-01 1989-09-19 Cyprus Foote Mineral Company Active oxygen-rich compound and preparative method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879590A (ja) * 1981-11-05 1983-05-13 Kurita Water Ind Ltd 溶存酸素の除去方法
US4603148A (en) * 1983-05-12 1986-07-29 Hercules Incorporated Macroreticulate polymer scavengers for the removal of impurities from inert fluids
US4512960A (en) * 1983-12-29 1985-04-23 The United States Of America As Represented By The United States Department Of Energy Method of gas purification and system therefor
EP0283961A2 (fr) * 1987-03-24 1988-09-28 Millipore Investment Holdings Limited Procédé et composition pour la purification d'arsine, de phosphine, d'ammoniac et gaz inertes pour enlever des acides de Lewis et des impuretés oxydantes de ceux-ci
JPH0340995A (ja) * 1989-07-07 1991-02-21 Tokuyama Soda Co Ltd Ｌｉ↓２Ｂ↓４Ｏ↓７結晶体の製造方法
EP0428898A1 (fr) * 1989-10-25 1991-05-29 Mitsubishi Gas Chemical Company, Inc. Adsorbent pour l'oxygène
DE19528784C1 (de) * 1995-08-04 1996-08-29 Inst Neuwertwirtschaft Gmbh Verfahren zur Reinigung von Inertgasen mittels Sorbenzien

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 8325, Derwent World Patents Index; Class D15, AN 83-59833K, XP002021099 *
DATABASE WPI Section Ch Week 9114, Derwent World Patents Index; Class L03, AN 91-097724, XP002021098 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8058480B2 (en) 2009-04-30 2011-11-15 E. I. Du Pont De Nemours And Company Process for the alkoxylation of alcohols
US8058481B2 (en) 2009-04-30 2011-11-15 E.I. Du Pont De Nemours And Company Alkyl alkoxylates containing unique end groups
US8067329B2 (en) 2009-04-30 2011-11-29 E. I. Du Pont De Nemours And Company Boron-based catalysts

Also Published As

Publication number Publication date
DE19528783A1 (de) 1997-02-06

Similar Documents

Publication Publication Date Title
DE60203551T2 (de) Herstellung von hochreinem Sauerstoff durch Druckwechseladsorption
DE69829021T2 (de) Gebundenes zeolithisches Adsorbens, Verfahren zu dessen Herstellung und dessen Verwendung bei der kryogenen Trennung von Prozessgas
JP3701998B2 (ja) Ｘ型ゼオライトおよびこのゼオライトを用いてガス混合物から窒素を吸着により分離する方法
DE60221619T2 (de) Verfahren zur Reinigung von Synthesegas
DE60202231T2 (de) Selektiver Zeolith-X für Argon/Sauerstoff
EP0571952B1 (fr) Composition de sorbants réversibles d&#39;oxygène
JP4121575B2 (ja) イオン交換されたゼオライト及びこれを使用してガス混合物から窒素を分離する方法
DE69736214T2 (de) Quecksilberadsorptionsmittel
DE2450605C3 (de) Verfahren und Reaktionsmasse zum Abtrennen von Sauerstoff aus Gasgemischen
EP3461555B1 (fr) Compositions adsorbantes de rho modifiées et leurs procédés d&#39;utilisation
DE69531051T2 (de) Zeolitisches Sorptionsmittel zur selektiven Adsorption von Stickstoff in Lufttrennungsverfahren
JP2000157862A (ja) モレキュラ―シ―ブ物質からなる吸着剤組成物
DE3841114A1 (de) Verfahren zur herstellung eines adsorptionsmittels zur abtrennung und gewinnung von co
DE102007020421A1 (de) Verfahren zur Herstellung von mit Elementarschwefel dotierten kohlenstoffhaltigen Adsorptionsmitteln sowie Verfahren zur Abgasreinigung unter Verwendung solcher Adsorptionsmittel
DE19528188C1 (de) Verfahren zur Adsorption von Stickstoff aus Gasgemischen mittels Druckwechseladsorption mit Zeolithen
DE3418424C2 (fr)
DE3003062A1 (de) Nicht-verdampfbare ternaere getter-legierung und verfahren zu ihrer herstellung
US6878657B2 (en) Process for the preparation of a molecular sieve adsorbent for the size/shape selective separation of air
EP1916027A1 (fr) Agent de sorption contenant du carbone et son procédé de fabrication
US6780806B1 (en) Lithium-based zeolites containing silver and copper and use thereof for selective absorption
WO1997005944A1 (fr) Sorbant pour oxygene et son procede de production
EP0606306B1 (fr) Procede de fabrication de tamis moleculaires en carbone
DE60011151T2 (de) Verfahren zur gastrennung
US7319082B2 (en) Process for the preparation of molecular sieve adsorbent for selective adsorption of oxygen from air
DE69925076T2 (de) PSA Verfahren unter Verwendung eines agglomerierten Adsorptionsmittels mit Zeolith und Bindemittel

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP RU US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase