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    Synthesis of ammonium dinitramide (ADN)
    1.
    发明授权
    Synthesis of ammonium dinitramide (ADN) 有权

    公开(公告)号：US12037241B2

    公开(公告)日：2024-07-16

    申请号：US17276513

    申请日：2018-09-17

    Applicant: TOTALFÖRSVARETS FORSKNINGSINSTITUT

    Inventor： Stefan Ek ,  Jonas Johansson

    IPC: C01B21/087 ,  B01D9/00

    CPC classification number: C01B21/087 ,  B01D9/0054 ,  B01D2009/0086

    Abstract: The invention concerns a method for making ammonium dinitramide from guanylurea dinitramide in one single process step. Guanylurea dinitramide is reacted with an ammonium sulfate in a reaction solution comprising water and acetone and an ion exchange gives ammonium dinitramide. By using acetone the yield is increased compared to known processes as formed guanylurea sulfate is poorly soluable in a water-acetone solution and precipitates, while guanylurea dinitramide has higher solubility in the solution than in only water. The guanylurea sulfate precipitate formed in the reaction solution that contains acetone is less sticky than if formed in water or in a water-alcohol solution and therefore easier to filter off. The use of acetone also allows lower process temperatures to be used than in previously known methods for producing guanylurea dinitramide. Conclusively, the method gives a higher yield, demands considerable smaller amounts of solvent and allows lower process temperatures to be used than in any formerly known process.

    Process for making trisilylamine
    7.
    发明授权
    Process for making trisilylamine 有权
    制备三甲胺的方法

    公开(公告)号：US09463978B2

    公开(公告)日：2016-10-11

    申请号：US15013224

    申请日：2016-02-02

    Applicant: AIR PRODUCTS AND CHEMICALS, INC.

    Inventor： Rajiv Krishan Agarwal ,  Sai-Hong Andrew Lo ,  Howard Paul Withers, Jr. ,  Joseph T. Sluzevich ,  James Joseph Hart

    IPC: C07F7/10 ,  C01B21/087 ,  B01J8/24 ,  B01J8/00 ,  B01J8/10 ,  B01J8/02

    CPC classification number: C01B21/087 ,  B01J8/0015 ,  B01J8/02 ,  B01J8/10 ,  B01J8/24 ,  B01J2208/00761 ,  B01J2208/00823 ,  C01C1/164

    Abstract: The method described herein provides a method for preparing trisilylamine. In one aspect, the method comprises: providing a reaction mixture of trisilylamine and monochlorosilane into a reactor wherein the reaction mixture is at a temperature and pressure sufficient to provide trisilylamine in a liquid phase wherein the reaction mixture is substantially free of an added solvent; contacting the reaction mixture with ammonia to provide a crude mixture comprising trisilylamine and an ammonium chloride solid wherein monochlorosilane is in stoichiometric excess in relation to ammonia; purifiying the crude mixture to provide trisilylamine wherein the trisilyamine is produced at purity level of 90% or greater; and optionally removing the ammonium chloride solid from the reactor.

    Abstract translation: 本文所述的方法提供了制备三甲胺的方法。 一方面，该方法包括：将三甲硅烷和一氯硅烷的反应混合物提供到反应器中，其中反应混合物处于足以提供液相中的三甲胺的温度和压力，其中反应混合物基本上不含加入的溶剂; 使反应混合物与氨接触以提供包含三甲胺和氯化铵固体的粗混合物，其中一氯硅烷相对于氨具有化学计量过量; 纯化粗混合物以提供三甲胺，其中三元胺的纯度为90％或更高; 并任选地从反应器中除去氯化铵固体。

    Removal and recovery of phosphate from liquid streams
    8.
    发明申请
    Removal and recovery of phosphate from liquid streams 审中-公开
    从液体流中去除和回收磷酸盐

    公开(公告)号：US20150336830A1

    公开(公告)日：2015-11-26

    申请号：US14545572

    申请日：2015-05-21

    Applicant: Dennis A. Burke

    Inventor： Dennis A. Burke

    IPC: C02F9/00 ,  C01B21/087

    CPC classification number: C02F9/00 ,  C01B21/087 ,  C01C1/28 ,  C02F1/20 ,  C02F1/24 ,  C02F1/5236 ,  C02F1/66 ,  C02F3/1215 ,  C02F3/308 ,  C02F3/34 ,  C02F3/341 ,  C02F2101/105 ,  C02F2101/16 ,  C02F2303/22 ,  Y02P20/129 ,  Y02W10/15 ,  Y02W10/37

    Abstract: An economical method for recovering phosphate or phosphate and nitrogen from liquid streams. A liquid containing phosphate is introduced into a culture of autotrophic microorganisms in the presence of natural or artificial light, thereby producing a liquid effluent with elevated pH and reduced alkalinity. The alkalinity is reduced through the consumption of bicarbonate/carbonate by the autotrophic microorganisms. The effluent is then chemically treated with low-cost chemicals to provide Ca++ or Mg++ ions necessary to form a phosphate precipitate such as calcium phosphate or magnesium-ammonium-phosphate (MAP). The autotrophic microorganisms can be cultivated in ponds, lagoons, or photobioreactors. The pH of the culture is adjustable within a preferred range of 7.5 to 10.5 by adjusting the photobioreactor operation. The process includes an economical flotation separator for solid, liquid, gas separation and a means of concentrating ammonia nitrogen that may also be removed during the process of phosphate reclamation.

    Abstract translation: 从液体流中回收磷酸盐或磷酸盐和氮气的经济方法。 将含有磷酸盐的液体在自然或人造光的存在下引入自养微生物的培养物中，由此产生具有升高的pH和降低碱度的液体流出物。 通过自养微生物消耗碳酸氢盐/碳酸盐，碱度降低。 然后将废液用低成本化学品进行化学处理，以提供形成磷酸盐沉淀物所需的Ca ++或Mg ++离子，如磷酸钙或磷酸氢铵 - 磷酸铵（MAP）。 自养微生物可以在池塘，泻湖或光生物反应器中培养。 通过调节光生物反应器操作，培养物的pH在7.5至10.5的优选范围内是可调节的。 该方法包括用于固体，液体，气体分离的经济的浮选分离器以及在磷酸盐回收过程中也可以除去氨氮浓缩的方法。

    PROCESS FOR THE COUPLED PREPARATION OF POLYSILAZANES AND TRISILYLAMINE
    9.
    发明申请
    PROCESS FOR THE COUPLED PREPARATION OF POLYSILAZANES AND TRISILYLAMINE 审中-公开
    多氯联苯和三甲硅烷偶联制备工艺

    公开(公告)号：US20150147256A1

    公开(公告)日：2015-05-28

    申请号：US14344801

    申请日：2013-06-25

    Applicant: Carl-Friedrich Hoppe ,  Christian Götz ,  Hartwig Rauleder ,  Goswin Uehlenbruck

    Inventor： Carl-Friedrich Hoppe ,  Christian Götz ,  Hartwig Rauleder ,  Goswin Uehlenbruck

    IPC: C01B21/087 ,  B01J19/24

    CPC classification number: C01B21/087 ,  B01J19/24 ,  B01J2219/24 ,  C08G77/62

    Abstract: The invention relates to a process for preparing trisilylamine and polysilazanes in the liquid phase, in which ammonia dissolved in an inert solvent is initially introduced in a substoichiometric amount relative to monochlorosilane which is likewise present in an inert solvent. The reaction is carried out in a reactor in which trisilylamine formed according to the following equation 4NH3+3H3SiCl→3NH4Cl+(SiH3)3N and polysilazanes are formed. The reactor is subsequently depressurized and TSA is separated off in gaseous form from the product mixture. The TSA obtained is purified by filtration and distillation and obtained in high or very high purity. Further ammonia dissolved in an inert solvent is subsequently introduced into the reactor, using, together with the previously introduced amount of ammonia, a stoichiometric excess of ammonia relative to the amount of MCS previously present. Excess ammonia is subsequently discharged, inert gas is introduced and the bottom product mixture from the reactor is passed through a filter unit, with solid ammonium chloride being separated off and a liquid mixture of polysilazanes and solvent being obtained.

    Abstract translation: 本发明涉及在液相中制备三甲胺和聚硅氮烷的方法，其中溶解在惰性溶剂中的氨相对于同样存在于惰性溶剂中的一氯硅烷，最初以亚化学计量的量引入。 该反应在其中形成根据下列等式4NH 3 + 3H 3 SiCl→3NH 4 Cl +（SiH 3）3 N和聚硅氮烷形成的三乙胺的反应器中进行。 随后将反应器减压，并将TSA从产物混合物中分离出气态。 通过过滤和蒸馏纯化获得的TSA，得到高纯度或非常高的纯度。 随后将溶解在惰性溶剂中的氨加入到反应器中，与先前导入的氨一起使用相对于先前存在的MCS的量的化学计量过量的氨。 随后排出过多的氨，引入惰性气体，将来自反应器的底部产物混合物通过过滤器单元，分离出固体氯化铵，得到聚硅氮烷和溶剂的液体混合物。

    Compositions, tools and methods for the manufacture of construction materials using enzymes
    10.
    发明授权
    Compositions, tools and methods for the manufacture of construction materials using enzymes 有权
    使用酶制造建筑材料的组合物，工具和方法

    公开(公告)号：US08951786B1

    公开(公告)日：2015-02-10

    申请号：US13834273

    申请日：2013-03-15

    Applicant: BioMason, Inc.

    Inventor： Ginger K. Dosier

    IPC: C04B24/12 ,  B28B17/00 ,  C04B103/00

    CPC classification number: B28B17/00 ,  C01B21/087 ,  C04B24/126 ,  C04B24/14 ,  C04B28/10 ,  C04B30/00 ,  C04B2103/0001 ,  C04B22/124 ,  C04B40/0028 ,  C04B40/0067 ,  C04B40/0071 ,  C04B14/00 ,  C04B40/0259

    Abstract: Methods for producing construction material utilizing loose pieces of aggregate (30), enzyme producing cells, an amount of urea and an amount of calcium ions. A first solution is prepared which includes urease which is formed by enzyme producing cells. A second solution is prepared which includes urea and calcium ions. The first and second solutions are added to the loose aggregate (30). The calcium ions contribute to the formation of calcium carbonate wherein the calcium carbonate fills and bonds between at least some of the gaps between the loose pieces of aggregate forming a solid construction material (92).

    Abstract translation: 使用松散的聚集体（30），酶产生细胞，一定量的尿素和一定量的钙离子来生产建筑材料的方法。 制备第一种溶液，其包括由酶产生细胞形成的脲酶。 制备了包括尿素和钙离子的第二种溶液。 将第一和第二溶液加入松散骨料（30）中。 钙离子有助于碳酸钙的形成，其中碳酸钙填充并粘结在形成固体结构材料（92）的松散骨料块之间的至少一些间隙之间。

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