CAS: 1344-58-7; Uranium(Vi) Oxide

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二氧化铀 Uranium Dioxide 1344-57-6

📜Uranyl Nirate Hexahydrate置于air体系中,化学反应 24.0H,反应生成氧化铀
参考文献:Mg,Ca And Ba Glutaratouranylates-Synthesis And Structure
标题:Mg,Ca And Ba Glutaratouranylates-Synthesis And Structure
摘要:Three Novel Uranyl Coordination Polymers Were Synthesized And Structurally Characterized By Single Crystal X-Ray Diffraction-[mg(H2O)(6)][uo2(Glt)(Hglt)](2)Center Dot 6H(2)O (1),[ca(H2O)(4)][uo2(Glt)(Hglt)](2)Center Dot 4H(2)O (2) And [ba(H2O)(5)][uo2(Glt)(Hglt)](2)Center Dot 2H(2)O (3),Where Glt = C5H6O42-(Glutarate) And Hglt = C5H7O4-(Hydroglutarate) Anions. The Structures Of Compounds 1-3 Contain 1D [uo2(Glt)(Hglt)](-) Units That Belong To The Aq(02)B(01) (A = Uo22+,Q(02) = Glt,B-01 = Hglt) Crystallochemical Group. The Different Roles Of Alkaline Earth R2+ Cations In The Structures And The Flexibility Of The Glutarate Anions Account For The Structural Distinctions Of 1-3. The Diverse Ways For The Connection Between The R2+ Ions And The [uo2(Glt)(Hglt)](-) Chains,The Water Content And The Geometry Of The Uranyl-Glutarate Units Present The Main Structural Features Of The New Complexes. A Comparative Analysis Based On Pauling'S Second Rule Of 1-3 And Alkali Glutaratouranylates Has Allowed An Explanation Of Their Structural Dissimilarity. (C) 2017 Elsevier Ltd. All Rights Reserved.
Doi:10.1016/j.Poly.2017.11.031

专利信息

专利号:US-9597658-B2
优先权日:2013-04-01
标 题 :Metal-organic framework templated synthesis of porous inorganic materials as novel sorbents
发明人：TAYLOR-PASHOW KATHRYN M L; LIN WENBIN; ABNEY CARTER W
权利人:TAYLOR-PASHOW KATHRYN M L; LIN WENBIN; ABNEY CARTER W; SAVANNAH RIVER NUCLEAR SOLUTIONS LLC; UNIV OF NORTH CAROLINA-CHAPEL HILL; UNIV CHICAGO
摘要:A novel metal-organic framework (MOF) templated process for the synthesis of highly porous inorganic sorbents for removing radionuclides, actinides, and heavy metals is disclosed. The highly porous nature of the MOFs leads to highly porous inorganic sorbents (such as oxides, phosphates, sulfides, etc) with accessible surface binding sites that are suitable for removing radionuclides from high level nuclear wastes, extracting uranium from acid mine drainage and seawater, and sequestering heavy metals from waste streams. In some cases, MOFs can be directly used for removing these metal ions as MOFs are converted to highly porous inorganic sorbents in situ.

专利号:US-3959341-A
优先权日:1972-09-25
标题:Process for low ammonia operation of the nitrile synthesis
发明人：DUNN BOBBY EUGENE
权利人:GOODRICH CO B F
摘要:The synthesis of nitriles such as acrylonitrile by the ammoxidation of mixtures of an olefin such as propylene or isobutylene, ammonia and oxygen or air is operated out low molar feed ratios of ammonia: olefin in the range of 1.03 to 1.07:1 and high excess oxygen levels of 4 to 7 mol % in the reactor effluent gases without significant losses in nitrile yield or significantly increased levels of oxygenated by-products. Control under such conditions is effected by analyzing the reactor effluent gases, previously temperature-conditioned at 350 DEG to 450 DEG F and solids removed, by a mass spectrometer instrument operating in a closed gas sampling and conditioning circuit or loop outside the reactor, and adjucting the input feed gas mixture in response to said effluent gas analysis to maintain the prescribed low ammonia rate in the feed and the excess oxygen level in the effluent gases leaving the reactor. Material savings in ammonia are effected and also in the amount of sulfuric acid required to remove unreacted ammonia from the residual gases before release of same to the atmosphere.

专利号:US-5128112-A
优先权日:1991-04-02
标 题:Synthesis of actinide nitrides, phosphides, sulfides and oxides
发明人：VAN DER SLUYS WILLIAM G; BURNS CAROL J; SMITH DAVID C
权利人:US ENERGY
摘要:A process of preparing an actinide compound of the formula An x Z y wherein An is an actinide metal atom selected from the group consisting of thorium, uranium, plutonium, neptunium, and americium, x is selected from the group consisting of one, two or three, Z is a main group element atom selected from the group consisting of nitrogen, phosphorus, oxygen and sulfur and y is selected from the group consisting of one, two, three or four, by admixing an actinide organometallic precursor wherein said actinide is selected from the group consisting of thorium, uranium, plutonium, neptunium, and americium, a suitable solvent and a protic Lewis base selected from the group consisting of ammonia, phosphine, hydrogen sulfide and water, at temperatures and for time sufficient to form an intermediate actinide complex, heating said intermediate actinide complex at temperatures and for time sufficient to form the actinide compound, and a process of depositing a thin film of such an actinide compound, e.g., uranium mononitride, by subliming an actinide organometallic precursor, e.g., a uranium amide precursor, in the presence of an effectgive amount of a protic Lewis base, e.g., ammonia, within a reactor at temperatures and for time sufficient to form a thin film of the actinide compound, are disclosed.

专利号:US-3822289-A
优先权日:1972-04-17
标题:Synthesis of thiophens
发明人：CLARK N; WEBSTER W
权利人:SYNTHETIC CHEMICALS LTD
摘要:THIOPENS ARE MADE BY REACTING ORGANIC COMPOUNDS HAVING A CONSECUTIVE CHAIN OF AT LEAST FOUR CARBON ATOMS WITH CARBON DISULPHIDE OR CARBONYL SULPHIDE IN A VAPOR PHASE REACTION IN THE PRESENCE OF A CATALYST.

专利号:US-4061685-A
优先权日:1975-02-07
标题 :Catalytic synthesis of phenols
发明人：WEIGERT FRANK JULIAN
权利人:DU PONT
摘要:A phenol is produced by heating water and a cyclic or acyclic alkane or alkene of 6-10 carbon atoms at a temperature of 350 DEG to 700 DEG C in the presence of a metal oxide catalyst. Exemplary is the heating of water and cyclohexane in a nitrogen atmosphere and in the presence of ZnO/TiO2 to produce phenol.

专利号:US-5925590-A
优先权日:1994-05-25
标 题 :Catalysts utilizing oxygen-deficient metal oxide compound for removal of exhaust gas constituents
发明人：WHITE JAMES H; SCHWARTZ MICHAEL
权利人:ELTRON RESEARCH INC
摘要:The invention provides various solid catalysts for decomposition of exhaust gases. Catalysts include, among others, those of formula Ce 0 .5 La 0 .4 Sr 0 .1 Pd 0 .025 O 3x and BiCo 0 .8 Cu 0 .2 O 3x . The invention also relates to catalytic reactors for decomposition of exhaust gases utilizing solid catalysts of the invention. The invention further provides methods for synthesis of various mixed metal oxide catalysts for decomposition of exhaust gas pollutants.