EP1091801A4 - Porous pellet adsorbents fabricated from nanocrystals - Google Patents

Porous pellet adsorbents fabricated from nanocrystals

Info

Publication number
EP1091801A4
EP1091801A4 EP99927082A EP99927082A EP1091801A4 EP 1091801 A4 EP1091801 A4 EP 1091801A4 EP 99927082 A EP99927082 A EP 99927082A EP 99927082 A EP99927082 A EP 99927082A EP 1091801 A4 EP1091801 A4 EP 1091801A4
Authority
EP
European Patent Office
Prior art keywords
nanocrystals
adsorbents
fabricated
porous pellet
pellet
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.)
Withdrawn
Application number
EP99927082A
Other languages
German (de)
French (fr)
Other versions
EP1091801A1 (en
Inventor
Kenneth J Klabunde
Olga Koper
Abbas Khaleel
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.)
Kansas State University
Original Assignee
Kansas State University
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
Priority claimed from US09/093,249 external-priority patent/US6093236A/en
Application filed by Kansas State University filed Critical Kansas State University
Publication of EP1091801A1 publication Critical patent/EP1091801A1/en
Publication of EP1091801A4 publication Critical patent/EP1091801A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/02Separation 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 by adsorption, e.g. preparative gas chromatography
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/04Solid 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
    • B01J20/041Oxides or hydroxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/06Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/2803Sorbents comprising a binder, e.g. for forming aggregated, agglomerated or granulated products
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28057Surface area, e.g. B.E.T specific surface area
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28069Pore volume, e.g. total pore volume, mesopore volume, micropore volume
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28078Pore diameter
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28095Shape or type of pores, voids, channels, ducts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30Processes for preparing, regenerating, or reactivating
    • B01J20/3021Milling, crushing or grinding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30Processes for preparing, regenerating, or reactivating
    • B01J20/3035Compressing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10Inorganic adsorbents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10Inorganic adsorbents
    • B01D2253/112Metals or metal compounds not provided for in B01D2253/104 or B01D2253/106
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/30Physical properties of adsorbents
    • B01D2253/302Dimensions
    • B01D2253/304Linear dimensions, e.g. particle shape, diameter
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/30Physical properties of adsorbents
    • B01D2253/302Dimensions
    • B01D2253/306Surface area, e.g. BET-specific surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/30Physical properties of adsorbents
    • B01D2253/302Dimensions
    • B01D2253/308Pore size
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/20Halogens or halogen compounds
    • B01D2257/206Organic halogen compounds
    • B01D2257/2064Chlorine
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/30Sulfur compounds
    • B01D2257/302Sulfur oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/40Nitrogen compounds
    • B01D2257/404Nitrogen oxides other than dinitrogen oxide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/50Carbon oxides
    • B01D2257/502Carbon monoxide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/70Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/70Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/702Hydrocarbons
    • B01D2257/7027Aromatic hydrocarbons
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0225Other waste gases from chemical or biological warfare
EP99927082A 1998-05-30 1999-05-18 Porous pellet adsorbents fabricated from nanocrystals Withdrawn EP1091801A4 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US8765798A 1998-05-30 1998-05-30
US87657 1998-05-30
US93249 1998-06-08
US09/093,249 US6093236A (en) 1998-05-30 1998-06-08 Porous pellet adsorbents fabricated from nanocrystals
PCT/US1999/010989 WO1999062630A1 (en) 1998-05-30 1999-05-18 Porous pellet adsorbents fabricated from nanocrystals

Publications (2)

Publication Number Publication Date
EP1091801A1 EP1091801A1 (en) 2001-04-18
EP1091801A4 true EP1091801A4 (en) 2006-05-10

Family

ID=26777244

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99927082A Withdrawn EP1091801A4 (en) 1998-05-30 1999-05-18 Porous pellet adsorbents fabricated from nanocrystals

Country Status (6)

Country Link
US (1) USRE39098E1 (en)
EP (1) EP1091801A4 (en)
AU (1) AU4406799A (en)
CA (1) CA2333448C (en)
IL (1) IL139814A0 (en)
WO (1) WO1999062630A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6863825B2 (en) * 2003-01-29 2005-03-08 Union Oil Company Of California Process for removing arsenic from aqueous streams
US7341977B2 (en) * 2003-06-20 2008-03-11 Nanoscale Corporation Method of sorbing sulfur compounds using nanocrystalline mesoporous metal oxides
US8038935B2 (en) * 2005-10-26 2011-10-18 Nanoscale Corporation Treatment of odors using nanocrystalline metal oxides
US8066874B2 (en) 2006-12-28 2011-11-29 Molycorp Minerals, Llc Apparatus for treating a flow of an aqueous solution containing arsenic
US8349764B2 (en) 2007-10-31 2013-01-08 Molycorp Minerals, Llc Composition for treating a fluid
US8252087B2 (en) 2007-10-31 2012-08-28 Molycorp Minerals, Llc Process and apparatus for treating a gas containing a contaminant
AU2009236334A1 (en) * 2008-04-14 2009-10-22 Nanoscale Corporation Method for neutralization, adsorption, and absorption of hazardous or otherwise undesired compounds in a tobacco product
CN101260507B (en) * 2008-04-24 2010-12-15 复旦大学 P-type semiconductor nickel-doping copper oxide target material and preparation method thereof
US9233863B2 (en) 2011-04-13 2016-01-12 Molycorp Minerals, Llc Rare earth removal of hydrated and hydroxyl species
EP3113859A4 (en) 2014-03-07 2017-10-04 Secure Natural Resources LLC Cerium (iv) oxide with exceptional arsenic removal properties
SG11201811351WA (en) 2016-07-05 2019-01-30 Timilon Tech Acquisitions Llc Compositions and methods for forming stable, liquid metal oxide/hydroxide formulations

Family Cites Families (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474207A (en) 1945-07-23 1949-06-28 Gen Motors Corp Especially reactive lime and method of producing it
SE316197B (en) * 1968-04-11 1969-10-20 Electrodius Ab
US3793841A (en) * 1971-01-25 1974-02-26 United States Gypsum Co Method of making and using soil stabilizer
CA1001568A (en) * 1971-07-21 1976-12-14 Robert Kunin Removal of sulfur trioxide and acid mist from gaseous streams
US4045371A (en) 1974-05-07 1977-08-30 Exxon Research And Engineering Company Process for preparing a gas desulfurization sorbent
US3974256A (en) 1974-05-07 1976-08-10 Exxon Research And Engineering Company Sulfide removal process
US4161411A (en) * 1977-06-16 1979-07-17 Doyen June E Cement dust briquettes and process of production thereof
CA1124916A (en) * 1978-07-07 1982-06-01 Saburo Wakimoto Fine spherical polymer particles containing inorganic pigment and/or coloring agent and process for the preparation thereof
US4324776A (en) 1980-12-08 1982-04-13 General Electric Company Mid-temperature H2 S removal process
NL8200087A (en) * 1981-01-19 1982-08-16 Mitsubishi Chem Ind PROCESS FOR PREPARING A POROUS FIRE-RESISTANT INORGANIC OXIDE.
US4543341A (en) * 1983-12-23 1985-09-24 Massachusetts Institute Of Technology Synthesis and processing of monosized oxide powders
DE3433228C1 (en) 1984-09-11 1986-04-10 Rheinische Kalksteinwerke GmbH, 5603 Wülfrath Process for the production of calcium hydroxide
US4755365A (en) * 1985-03-22 1988-07-05 Kawasaki Steel Corporation Method of producing high purity zirconia powder from zircon powder
US5008221A (en) * 1985-04-11 1991-04-16 Corning Incorporated High toughness ceramic alloys
US4696680A (en) * 1985-10-03 1987-09-29 The United States Of America As Represented By The United States Department Of Energy Method and apparatus for the selective separation of gaseous coal gasification products by pressure swing adsorption
US4833108A (en) * 1987-03-28 1989-05-23 Narumi China Corporation Sintered body of aluminum nitride
US5059405A (en) * 1988-12-09 1991-10-22 Bio-Gas Development, Inc. Process and apparatus for purification of landfill gases
AU7671691A (en) * 1990-04-04 1991-10-30 Exxon Chemical Patents Inc. Mercury removal by dispersed-metal adsorbents
JP3029841B2 (en) * 1990-04-16 2000-04-10 株式会社豊田中央研究所 Composite adsorbent and method for producing the same
US5173279A (en) 1990-11-21 1992-12-22 Lhoist Recherche Et Developpement S.A. Method and composition for treating flue or exhaust gases utilizing modified calcium hydroxide
DE4115172C2 (en) * 1991-05-09 1995-08-24 Nukem Gmbh Process for the preparation of powder from stabilized zirconium oxide and use of the process
US5290332A (en) * 1992-03-05 1994-03-01 Eastman Kodak Company Ceramic articles and methods for preparing ceramic articles and for sintering
US5540896A (en) 1993-04-30 1996-07-30 Westinghouse Electric Corporation System and method for cleaning hot fuel gas
US5759939A (en) * 1994-04-08 1998-06-02 Kansas State University Research Foundation Composite metal oxide adsorbents
US5712219A (en) * 1994-04-08 1998-01-27 Kansas State University Research Foundation Iron oxide magnesium oxide composites and method for destruction of cholrinated hydrocarbon using such composites
US5482536A (en) 1994-04-12 1996-01-09 Solvay Specialty Chemicals, Inc. Apparatus for containment and scrubbing of toxic gas from a leakage location and method therefor
AU2390395A (en) 1994-04-18 1995-11-10 Yosry A. Attia Aerogel materials and system for the capture and separation of gases and vapors with aerogel materials
US5540981A (en) * 1994-05-31 1996-07-30 Rohm And Haas Company Inorganic-containing composites
US5670247A (en) * 1994-10-03 1997-09-23 Mitsubishi Paper Mills Limited Photoreactive noxious substance purging agent and photoreactive noxious substance purging material using the agent
US5928496A (en) * 1996-06-20 1999-07-27 Contract Materials Processing, Inc. Hydrotalcite sulfer oxide sorption
US5858212A (en) 1996-07-03 1999-01-12 Interglobal Desulfuruzations Systems, Inc. Desulfurization and hydrocarbon quality enhancement process
US5807798A (en) * 1996-12-20 1998-09-15 E. I. Du Pont De Nemours And Company Refractory compositions for use in fluid bed chlorinators

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
JANE V. STARK: "Nanoscale Metal oxide Particles/Clusters as Chemical Reagents. Unique Surface Chemistry on Magnesium Oxide As Shown by Enhanced Adsorption of Acid Gases (Sulfur Dioxide and Carbon Dioxide) and Pressure Dependence", CHEMISTRY OF MATERIALS, vol. 8, August 1996 (1996-08-01), pages 1904 - 1912, XP002369114 *
JANE V. STARK: "Nanoscale Metal Oxise particles/clusters as chemical reagents. Adsorption of Hydrogen Halides, Nitric Oxide, and Sulfur Trioxide on Magnesium Oxide Nanocrystals and Compared with Microcrystals", CHEMISTRY OF MATERIALS, vol. 8, August 1996 (1996-08-01), pages 1913 - 1918, XP002369113 *
See also references of WO9962630A1 *

Also Published As

Publication number Publication date
EP1091801A1 (en) 2001-04-18
AU4406799A (en) 1999-12-20
IL139814A0 (en) 2002-02-10
WO1999062630A1 (en) 1999-12-09
USRE39098E1 (en) 2006-05-23
CA2333448C (en) 2008-12-30
CA2333448A1 (en) 1999-12-09

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