PROCESS FOR REMOVING CYANIDE FROM A CYANIDE-BEARING AQUEOUS FLUID

    公开(公告)号:WO2022087656A1

    公开(公告)日:2022-05-05

    申请号:PCT/AU2021/051239

    申请日:2021-10-25

    Abstract: The invention provides a process for removing cyanide from a cyanide-bearing aqueous fluid, the process comprising: (i) adding a solid composition comprising a first mixed-metal cyanide complex comprising copper and iron to a cyanide-bearing aqueous fluid comprising free cyanide and metal-complexed cyanide, wherein at least a portion of the first mixed-metal cyanide complex dissolves, with complexation of the copper by the free cyanide, to produce an aqueous solution comprising cyanometallates, the cyanometallates comprising copper cyanide and iron cyanide complexes derived from the first mixed-metal cyanide complex; (ii) contacting the aqueous solution with an anion-exchange absorbent to absorb the cyanometallates, thereby producing a cyanide-lean aqueous fluid; (iii) extracting the anion-exchange absorbent comprising the absorbed cyanometallates with at least one non-acidic aqueous extractant to produce an aqueous extract comprising the copper cyanide and iron cyanide complexes; and (iv) acidifying the aqueous extract to produce a precipitate comprising a second mixed-metal cyanide complex comprising copper and iron.

    二酸化炭素を用いたアンモニア化学種脱離方法、アンモニア化学種供給剤、およびアンモニア化学種吸着・脱離装置

    公开(公告)号:WO2020080302A1

    公开(公告)日:2020-04-23

    申请号:PCT/JP2019/040264

    申请日:2019-10-11

    Abstract: 塩または強酸の水溶液を用いる場合よりも簡便、安価、および穏和な条件で、かつ水のみを用いる場合よりも効率的に、プルシアンブルー誘導体に吸着したアンモニア化学種を脱離させられるアンモニア化学種脱離方法を提供する。このアンモニア化学種脱離方法は、アンモニア化学種が吸着した下記一般式(1)で表されるプルシアンブルー誘導体に、二酸化炭素および水を接触させて、アンモニア化学種を脱離させるアンモニア化学種脱離工程を有する。 A x M[M'(CN) 6 ] y ・zH 2 O・・・(1) ここで、xは0~3、yは0.1~1.5、zは0~6である。Aは水素、アンモニウム、アルカリ金属、およびアルカリ土類金属の一種以上の陽イオンである。MおよびM'は、互いに独立し、アンモニウム、アルカリ金属、およびアルカリ土類金属を除く原子番号3~83の原子の一種以上の陽イオンである。

    METAL-DOPED TRANSITION METAL HEXACYANOFERRATE (TMHCF) BATTERY ELECTRODE
    4.
    发明申请
    METAL-DOPED TRANSITION METAL HEXACYANOFERRATE (TMHCF) BATTERY ELECTRODE 审中-公开
    金属转移金属十六烷基(TMHCF)电池电极

    公开(公告)号:WO2014178194A1

    公开(公告)日:2014-11-06

    申请号:PCT/JP2014/002381

    申请日:2014-04-30

    CPC classification number: C01C3/12 H01M4/136 H01M4/1397 H01M4/364 H01M4/5825

    Abstract: A method is provided for synthesizing a metal-doped transition metal hexacyanoferrate (TMHCF) battery electrode. The method prepares a first solution of A x Fe(CN) 6 and Fe(CN) 6 , where A cations may be alkali or alkaline-earth cations. The method adds the first solution to a second solution containing M-ions and M`-ions. M is a transition metal, and M` is a metal dopant. Subsequent to stirring, the mixture is precipitated to form A x M c M` d Fe z (CN) n .mH 2 O particles. The A x M c M` d Fe z (CN) n .mH 2 O particles have a framework and interstitial spaces in the framework, where M and M` occupy positions in the framework. Alternatively, the method prepares A a A` b M y Fe z (CN) n .mH 2 O particles. A and A` occupy interstitial spaces in the A a A` b M y Fe z (CN) n .mH 2 O particle framework. A metal-doped TMHCF electrode is also provided.

    Abstract translation: 提供了一种合成金属掺杂的过渡金属六氰基铁酸盐(TMHCF)电池电极的方法。 该方法制备了AxFe(CN)6和Fe(CN)6的第一溶液,其中A阳离子可以是碱金属或碱土金属阳离子。 该方法将第一溶液添加到含有M离子和M'-离子的第二溶液中。 M是过渡金属,M'是金属掺杂剂。 搅拌后,使混合物沉淀形成AxMcM'dFez(CN)n.mH2O颗粒。 AxMcM`dFez(CN)n.mH2O颗粒在框架中具有框架和间隙空间,其中M和M'在框架中占据位置。 或者,该方法制备AaA'bMyFez(CN)n.mH2O颗粒。 A和A`在AaA`bMyFez(CN)n.mH2O粒子框架中占据间隙空间。 还提供了金属掺杂的TMHCF电极。

    METHOD FOR PRODUCTION OF IRON OXIDE PIGMENTS
    5.
    发明申请
    METHOD FOR PRODUCTION OF IRON OXIDE PIGMENTS 审中-公开
    生产氧化铁颜料的方法

    公开(公告)号:WO01028929A1

    公开(公告)日:2001-04-26

    申请号:PCT/IL2000/000661

    申请日:2000-10-19

    Abstract: The invention provides a process for the production of iron based pigments and anticorrosive additives from elemental iron comprising: a) reacting iron Fe DEG with ferric sulphate Fe2(SO4)3 and with sulfuric acid H2SO4 to produce ferrous sulphate FeSO4; b) oxidizing ferrous sulphate FeSO4 in a bacterial solution containing at least 10 bacterial cells of thiobacillus ferrooxidans per 1 ml of solution under aerobic conditions to produce ferric oxide sulphate Fe2(SO4)3; c) reacting said ferric oxide sulphate Fe2(SO4)3 with water, to precipitate iron oxide monohydrate Fe2O3 x H2O; and d) re-cycling the solution from step c, to step a, to utilize the sulphuric acid and a portion of the ferrous sulphate values therein.

    Abstract translation: 本发明提供了一种从元素铁生产铁基颜料和防腐添加剂的方法,包括:a)使铁Fe DEG与硫酸铁Fe 2(SO 4)3和硫酸H 2 SO 4反应生成硫酸亚铁FeSO4; b)在需氧条件下,每1ml溶液中含有至少10 7个硫氧化硫杆菌细菌细菌的细菌溶液中硫酸亚铁FeSO 4氧化产生硫酸铁Fe2(SO4)3; c)使所述氧化铁硫酸盐Fe 2(SO 4)3与水反应,以沉淀氧化铁一水合物Fe 2 O 3·H 2 O; 和d)将来自步骤c的溶液重新循环到步骤a,以利用其中的硫酸和一部分硫酸亚铁值。

    掺杂氟的普鲁士蓝类钠离子电池正极材料的制备方法

    公开(公告)号:WO2023071338A1

    公开(公告)日:2023-05-04

    申请号:PCT/CN2022/108658

    申请日:2022-07-28

    Abstract: 本发明公开了一种掺杂氟的普鲁士蓝类钠离子电池正极材料的制备方法,包括配制亚铁氰化钠和氟化钠的混合溶液,并向混合溶液中加入抗氧化剂,将过渡金属盐溶液以一定流速加入到混合溶液中,加料结束后,再向混合溶液中加入氯化钠溶液,并进行陈化,将陈化后的物料进行固液分离得到沉淀物,将沉淀物进行洗涤、干燥,即得普鲁士蓝类钠离子电池正极材料。本发明的混合溶液中含有大量的氟离子,在加入过渡金属离子时,会与过渡金属离子进行络合,从而抑制沉淀反应速度,使结晶缓慢进行,从而得到结晶度更好的颗粒,氟络合的金属钠盐也会随着反应的进行而产生沉淀,并与亚铁氰化物共沉淀,形成共结晶体,氟离子起到材料的支撑骨架的作用。

    MONOCLINIC SODIUM IRON HEXACYANOFERRATE
    7.
    发明申请
    MONOCLINIC SODIUM IRON HEXACYANOFERRATE 审中-公开
    单丙烯酸钠铁十六烷基三甲铵

    公开(公告)号:WO2017180059A1

    公开(公告)日:2017-10-19

    申请号:PCT/SG2017/050203

    申请日:2017-04-11

    Abstract: There is disclosed is a compound of formula (I): Na 2-x Fe 2-w (CN) 6-y .(Vacancy) v .zH 2 O, which compound is provided in the form of a monoclinic lattice system, and where v, w, x, y and z are as defined herein. Methods of making this material and its use to form electrodes for sodium ion batteries are also disclosed. In addition, the compound of formula (I) can be converted into a compound of formula (II) in a rhombohedral lattice system: Na 2-x' Fe 2-w' (CN) 6-y' .(Vacancy) v' .z'H 2 O by a further method disclosed herein, where v', w', x', y' and z' for the compounds of formula (II) are as defined herein. The use of compounds of formula (I) in the formation of electrodes for sodium ion batteries and electrodes comprising compounds of formula (II) prepared from converting electrodes comprising compounds of formula (I) are also disclosed.

    Abstract translation: 公开了式(I)的化合物:Na 2-x Fe 2-w(CN)6- y空位(空位)vzH 2 O,该化合物以单斜晶格系统的形式提供,并且其中v,w,x, y和z如本文所定义。 还公开了制造这种材料的方法及其用于形成钠离子电池电极的用途。 另外,式(I)化合物可以在菱形晶格体系中转化成式(II)化合物:Na 2-x'Fe 2 -w'

    SOLID BUFFER MATERIALS FOR ELECTROLYTE SOLUTIONS AND FLOW BATTERIES UTILIZING SAME
    8.
    发明申请
    SOLID BUFFER MATERIALS FOR ELECTROLYTE SOLUTIONS AND FLOW BATTERIES UTILIZING SAME 审中-公开
    电解液固体缓冲材料及其使用的流动电池

    公开(公告)号:WO2016118772A1

    公开(公告)日:2016-07-28

    申请号:PCT/US2016/014362

    申请日:2016-01-21

    Inventor: GOELTZ, John

    CPC classification number: H01M8/20 H01M8/188 H01M2300/0014 Y02E60/528

    Abstract: Electrolyte solutions for flow batteries and other electrochemical systems can contain a dissolved iron hexacyanide complex as an active material. Alkaline buffering can be desirable in such electrolyte solutions to promote stability of the active material. However, the buffer material can undesirably decrease solubility of the iron hexacyanide complex to unacceptable levels in some instances. Compositions with increased concentrations of iron hexacyanide can include an aqueous solution containing a dissolved iron hexacyanide complex, and a solid buffer material in contact with the aqueous solution. The solid buffer material is present at an amount greater than that needed to produce a saturation concentration of the solid buffer material in the aqueous solution. Flow batteries and other electrochemical systems can contain the compositions as an electrolyte solution. Electrolyte solutions containing active materials other than an iron hexacyanide complex can also be stabilized by using an appropriate solid buffer material.

    Abstract translation: 用于流动电池和其他电化学系统的电解液可以含有溶解的六氰化锡铁配合物作为活性材料。 在这种电解质溶液中碱性缓冲是可取的,以促进活性材料的稳定性。 然而,缓冲材料在某些情况下可能不期望地降低六氰化铁络合物的溶解度至不可接受的水平。 具有增加浓度的六氰化铁的组合物可以包括含有溶解的六氰化铁的络合物的水溶液和与该水溶液接触的固体缓冲材料。 固体缓冲材料的存在量大于在水溶液中产生固体缓冲材料的饱和浓度所需的量。 流动电池和其他电化学系统可以包含作为电解质溶液的组合物。 含有除六氰酸铁配合物以外的活性物质的电解质溶液也可以通过使用合适的固体缓冲材料来稳定。

    SODIUM IRON(II)-HEXACYANOFERRATE(II) BATTERY ELECTRODE AND SYNTHESIS METHOD
    9.
    发明申请
    SODIUM IRON(II)-HEXACYANOFERRATE(II) BATTERY ELECTRODE AND SYNTHESIS METHOD 审中-公开
    电池电极和合成方法(II) - 十六烷酸(II)

    公开(公告)号:WO2015064069A1

    公开(公告)日:2015-05-07

    申请号:PCT/JP2014/005394

    申请日:2014-10-23

    Abstract: A method is provided for synthesizing sodium iron(II)-hexacyanoferrate(II). A Fe(CN) 6 material is mixed with the first solution and either an anti-oxidant or a reducing agent. The Fe(CN) 6 material may be either ferrocyanide ([Fe(CN) 6 ] 4- ) or ferricyanide ([Fe(CN) 6 ] 3- ). As a result, sodium iron(II)-hexacyanoferrate(II) (Na 1+X Fe[Fe(CN) 6 ] Z .mH 2 O is formed, where x is less than or equal to 1, and where m is in a range between 0 and 7. In one aspect, the first solution including includes A ions, such as alkali metal ions, alkaline earth metal ions, or combinations thereof, resulting in the formation of Na 1+X A Y Fe[Fe(CN) 6 ] Z .mH 2 O, where y is less than or equal to 1. Also provided are a Na 1+X Fe[Fe(CN) 6 ] Z .mH 2 O battery and Na 1+X Fe[Fe(CN) 6 ] Z .mH 2 O battery electrode.

    Abstract translation: 提供了一种合成铁(II) - 六氰基铁酸钠(II)的方法。 将Fe(CN)6材料与第一溶液和抗氧化剂或还原剂混合。 Fe(CN)6材料可以是亚铁氰化物([Fe(CN)6] 4-)或铁氰化物([Fe(CN)6] 3-)。 结果,形成了铁(II) - 六氰基铁酸盐(II)(Na1 + XFe [Fe(CN)6] Z.mH2O,其中x小于或等于1,其中m在0 一方面,第一种溶液包括A离子,如碱金属离子,碱土金属离子或其组合,导致形成Na1 + XAYFe [Fe(CN)6] Z.mH2O,其中 y还小于1.还提供了Na1 + XFe [Fe(CN)6] Z.mH2O电池和Na1 + XFe [Fe(CN)6] Z.mH2O电池电极。

    HIGH SOLUBILITY IRON HEXACYANIDES
    10.
    发明申请
    HIGH SOLUBILITY IRON HEXACYANIDES 审中-公开
    高可溶性铁HEXACYANIDES

    公开(公告)号:WO2014028050A1

    公开(公告)日:2014-02-20

    申请号:PCT/US2013/030430

    申请日:2013-03-12

    Abstract: Stable solutions comprising charged coordination complexes, including iron hexacyanides are described, as are methods of preparing and using same in chemical energy storage systems, including flow battery systems. The use of these compositions allows energy storage densities at levels unavailable by other iron hexacyanide systems.

    Abstract translation: 还描述了包括带电配位络合物(包括六氰化铁)的稳定溶液,以及在包括流动电池系统的化学能量存储系统中制备和使用它们的方法。 使用这些组合物可以将能量储存密度提高到其他六氰化锡系统无法达到的水平。

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