Chalcogenide compounds with a clay-like cation-exchange...

Details Chalcogenide compounds with a clay-like cation-exchange... Chalcogenide compounds with a clay-like cation-exchange...

2008-10-07

2011-12-06

Gakh, Yelena G (Department: 1777)

Liquid purification or separation

Processes

Ion exchange or selective sorption

C436S073000, C436S079000, C436S084000, C252S582000, C252S583000, C252S584000, C252S585000, C252S586000

Reexamination Certificate

active

08070959

ABSTRACT:
Chalcogenide compounds with cation exchange capability and methods of using the compounds are described. Compounds of the general formula A2xMxSn3-xS6are described wherein x is 0.1-0.95, A is Li+, Na+, K+or Rb+and M is Mn2+, Mg2+, Zn2+, Fe2+, Co2+or Ni2+. Compounds of the general formula H2xMxSn3-xS6are also described wherein x is 0.1-0.95 and M=Mn2+, Mg2+, Zn2+, Fe2+, Co2+or Ni2+. The compounds can be layered compounds. The compounds are capable of intercalation of Cs+, Sr2+, Hg2+, Pb2+, Cd2+, and/or Ag+ions. A process involving contacting the compounds with a solution comprising one or more ions including Cs+, Sr2+, Hg2+, Pb2+, Cd2+, and/or Ag+is also provided. The one or more ions can be removed from the solution by the compounds. A process comprising contacting compounds of the general formula A2xMxSn3-xS6with a solution containing UO22+, Th4+or Pu4+ions is also described.

REFERENCES:
patent: 4040917 (1977-08-01), Whittingham
patent: 4159962 (1979-07-01), Di Salvo et al.
patent: 5531936 (1996-07-01), Kanatzidis et al.
Manos et al., Layered metal sulfides: Exceptionally selective agents for radioactive strontium removal, PNAS, Mar. 11, 2008, pp. 3696-3699, vol. 105, No. 10.
Ding et al., Permeable layers with large windows in [(CH3CH2CH2)2NH2]5In5Sb6S19•1.45H2O: High ion-exchange capacity, size discrimination, and selectivity for Cs ions, Chem Mater, Jul. 17, 2007, pp. 3867-3869, vol. 19.
Divigalpitiya et al., Inclusion systems of organic molecules in restacked single-layer molybdenum disulfide, Science, Oct. 20, 1989, pp. 369-371, vol. 246.
Clement et al., Organometallic intercalates of the layered transition-metal dichalcogenides TaS2and ZrS2, Inorg Chem, 1978, pp. 2754-2758, vol. 17, No. 10, American Chemical Society.
Heising et al., Exfoliated and restacked MoS2and WS2: Ionic or neutral species? Encapsulation and ordering of hard electropositive cations., J Am Chem Soc, Dec. 4, 1999, pp. 11720-11732, vol. 121.
Dungey et al., Structural characterization and thermal stability of MoS2intercalation compounds, Chem Mater, Jul. 11, 1998, pp. 2152-2161, vol. 10.
Bortun et al., Evaluation of Synthetic Inorganic Ion Exchangers for Cesium and Strontium Removal from Contaminated Groundwater and Wastewater, Solvent Extr. Ion Exch., 1997, pp. 909, vol. 15, No. 5.
Sylvester et al., The Removal of Strontium and Cesium from simulated Hanford Groundwater Using Inorgainc Ion Exchange Materials, Solvent Extr. Ion Exch., 1998, pp. 1527, vol. 16, No. 6.
Bortun et al., Synthesis, Characterization, and Ion Exchange Behavior of a Framework Potassium Titanium Trisilicate K2TiSi3O9•H2O and Its Protonated Phases, Chem. Mater., Jan. 13, 2000, pp. 294, vol. 12, No. 2.
Möller et al., Update of85Sr,134Cs and57Co by antimony silicates doped with Ti4+, Nb5+, Mo6+and W6+, J. Mater. Chem., 2001, pp. 1526, vol. 11.
Mercier et al., Access in Mesoporous Materials: Advantages of a Uniform Pore Structure in the Design of a Heavy Metal Ion Adsorbent for Environmental Remediation, Adv. Mater., 1997, pp. 500, vol. 9, No. 6.
Feng et al., Functionalized Monolayers on Ordered Mesoporous Supports, Science, May 9, 1997, pp. 923, vol. 276.
Gash et al., Efficient Recovery of Elemental Mercury from Hg(II)-Contaminated Aqueous Media Using a Redox-Recyclable Ion-Exchange Material, Environ. Sci. Technol., 1998, pp. 1007, vol. 32, No. 7.
The International Search Report and The Written Opinion for PCT/US08/11550 filed on Oct. 7, 2008, mailed on Dec. 12, 2008.

Affiliated with

Also associated with

Rating

Chalcogenide compounds with a clay-like cation-exchange... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Chalcogenide compounds with a clay-like cation-exchange..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chalcogenide compounds with a clay-like cation-exchange... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4309148