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    • 1. 发明授权
    • Hydrothermal oxidation method for production of alkali metal dichromate from carbon ferrochrome
    • 从碳铬铁生产碱金属重铬酸盐的水热氧化法
    • US09157133B2
    • 2015-10-13
    • US13882354
    • 2010-11-02
    • Zhu JiJinsong WangZhong ZhangYuqing YangAishan WangWeiguo SongXinjian YinQingting WeiHongwei RuWenwen ZhangHaijun Mei
    • Zhu JiJinsong WangZhong ZhangYuqing YangAishan WangWeiguo SongXinjian YinQingting WeiHongwei RuWenwen ZhangHaijun Mei
    • C22B34/32C01G37/14C01G49/02
    • C22B34/32C01G37/14C01G49/02
    • The present invention provides a hydrothermal oxidation method for producing alkali metal dichromate from carbon ferrochrome, and the method comprises the following steps: formulating an initial reaction liquid by mixing carbon ferrochrome, an alkaline substance and water, in which the actual addition amount of the alkali is controlled smaller than the theoretically required amount; adding the initial reaction liquid into a reaction kettle, charging an oxidizing gas into the reaction kettle, and allowing the reaction to proceed for 0.5 to 3 h at a temperature of 150° C. to 370° C. and a pressure of 2 Mpa to 24 MPa; carrying out solid-liquid separation, cooling the resultant filtrate to a temperature of −12° C. to −20° C. to precipitate crystals, and carrying out separation by centrifuge to obtain alkali metal dichromate solution; adding CrO3 to the alkali metal dichromate solution until the degree of acidification reaches 100% or greater, concentrating the solution by evaporation, and cooling it to precipitate crystals, so as to afford alkali metal dichromate. The method has a simple process, is easy to control, and can directly produce sodium dichromate under hydrothermal conditions.
    • 本发明提供一种从碳铬铁制备碱金属重铬酸盐的水热氧化方法,其方法包括以下步骤:通过混合碳铬铁,碱性物质和水,配制初始反应液,其中碱的实际添加量 控制小于理论要求量; 将初始反应液加入反应釜中,将氧化气体加入到反应釜中,并使反应在150℃至370℃的温度和2Mpa的压力下进行0.5至3小时, 24 MPa; 进行固液分离,将得到的滤液冷却至-12℃〜-20℃的温度,析出结晶,通过离心分离,得到重金属碱金属溶液; 将CrO 3加入到碱金属重铬酸盐溶液中直至酸化度达到100%以上,蒸发浓缩溶液,冷却析出晶体,得到碱金属重铬酸盐。 该方法工艺简单,易于控制,可在水热条件下直接生成重铬酸钠。
    • 2. 发明申请
    • HYDROTHERMAL OXIDATION METHOD FOR PRODUCTION OF ALKALI METAL DICHROMATE FROM CARBON FERROCHROME
    • 碳氢化合物生产碱金属二铬酸盐的氢氧化法
    • US20140341791A1
    • 2014-11-20
    • US13882354
    • 2010-11-02
    • Zhu JiJinsong WangZhong ZhangYuqing YangAishan WangWeiguo SongXinjian YinQingting WeiHongwei RuWenwen ZhangHaijun Mei
    • Zhu JiJinsong WangZhong ZhangYuqing YangAishan WangWeiguo SongXinjian YinQingting WeiHongwei RuWenwen ZhangHaijun Mei
    • C22B34/32C01G49/02
    • C22B34/32C01G37/14C01G49/02
    • The present invention provides a hydrothermal oxidation method for producing alkali metal dichromate from carbon ferrochrome, and the method comprises the following steps: formulating an initial reaction liquid by mixing carbon ferrochrome, an alkaline substance and water, in which the actual addition amount of the alkali is controlled smaller than the theoretically required amount; adding the initial reaction liquid into a reaction kettle, charging an oxidizing gas into the reaction kettle, and allowing the reaction to proceed for 0.5 to 3 h at a temperature of 150° C. to 370° C. and a pressure of 2 Mpa to 24 MPa; carrying out solid-liquid separation, cooling the resultant filtrate to a temperature of −12° C. to −20° C. to precipitate crystals, and carrying out separation by centrifuge to obtain alkali metal dichromate solution; adding CrO3 to the alkali metal dichromate solution until the degree of acidification reaches 100% or greater, concentrating the solution by evaporation, and cooling it to precipitate crystals, so as to afford alkali metal dichromate. The method has a simple process, is easy to control, and can directly produce sodium dichromate under hydrothermal conditions.
    • 本发明提供一种从碳铬铁制备碱金属重铬酸盐的水热氧化方法,其方法包括以下步骤:通过混合碳铬铁,碱性物质和水,配制初始反应液,其中碱的实际添加量 控制小于理论要求量; 将初始反应液加入反应釜中,将氧化气体加入到反应釜中,并使反应在150℃至370℃的温度和2Mpa的压力下进行0.5至3小时, 24 MPa; 进行固液分离,将得到的滤液冷却至-12℃〜-20℃的温度,析出结晶,通过离心分离,得到重金属碱金属溶液; 将CrO 3加入到碱金属重铬酸盐溶液中直至酸化度达到100%以上,蒸发浓缩溶液,冷却析出晶体,得到碱金属重铬酸盐。 该方法工艺简单,易于控制,可在水热条件下直接生成重铬酸钠。
    • 6. 发明申请
    • SYNTHESIS AND USE OF NANOCRYSTALLINE ZEOLITES
    • 合成和使用纳米晶体沸石
    • US20100028231A1
    • 2010-02-04
    • US12510776
    • 2009-07-28
    • Sarah LarsenVicki GrassianWeiguo SongGonghu Li
    • Sarah LarsenVicki GrassianWeiguo SongGonghu Li
    • B01D53/56
    • C01B39/02B01D2255/50B01D2257/402B01D2257/404B01J29/035B01J29/084B01J35/0013B82Y30/00C01B21/02C01B21/22C01B37/02C01B39/04C01B39/205C01B39/24C01P2002/72C01P2002/82C01P2002/86Y02C20/10
    • Embodiments of the present invention relate to a method for synthesizing nanocrystalline zeolites, the method comprising contacting starting products that comprise a solvent, a silicon source, a cation base, an organic template, and an aluminum source, or any combination thereof sufficient to produce a zeolite gel by hydrolysis, heating the zeolite gel sufficient to produce a first batch of zeolite crystals and a first clear solution, separating the first batch of zeolite crystals from the first clear solution, heating the first clear solution sufficient to produce a second batch of zeolite crystals and second clear solution and separating the second batch of zeolite crystals from the second clear solution. In addition, embodiments relate to a method of using nanocrystalline zeolites, the method comprising contacting a nanocrystalline zeolite with a reductant sufficient to produce a nanocrystalline zeolite with adsorbed reductant and exposing the nanocrystalline zeolite with adsorbed reductant to reactant gases sufficient to obtain reaction products and the nanocrystalline zeolite.
    • 本发明的实施方案涉及一种用于合成纳米晶体沸石的方法,所述方法包括将包含溶剂,硅源,阳离子碱,有机模板和铝源的起始产物或其足以产生 沸石凝胶,加热沸石凝胶足以产生第一批沸石晶体和第一澄清溶液,将第一批沸石晶体与第一澄清溶液分离,加热足以产生第二批沸石的第一澄清溶液 晶体和第二透明溶液,并将第二批沸石晶体与第二澄清溶液分离。 此外,实施方案涉及使用纳米晶体沸石的方法,所述方法包括使纳米晶体沸石与还原剂接触,所述还原剂足以产生具有吸附还原剂的纳米晶体沸石,并将具有吸附还原剂的纳米晶体沸石暴露于足以获得反应产物的反应气体 纳米晶体沸石。