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1.发明公开公开(公告)号：US20240351005A1
公开(公告)日：2024-10-24
申请号：US18503234
申请日：2023-11-07
CPC分类号： B01J23/34 , B01J35/23 , B01J37/031 , B01J37/04 , C01G45/1214 , C02F1/722 , C02F1/725 , C01P2002/54 , C01P2004/03 , C01P2004/16 , C02F2101/38 , C02F2103/06
摘要： Provided are a silicate modified manganese-based material and a preparation method and application thereof. The silicate modified manganese-based material has a nanoscale needle like structure, and is prepared from a solution containing a manganese source and a soluble silicate source through an oxidation-reduction reaction and then a hydrothermal reaction. The manganese source includes a divalent manganese source and a heptavalent manganese source, with Mn (II) and Mn (VII) in a molar ratio of 0.5-5.5 to 1. The present disclosure uses silicate to regulate manganese oxides, significantly reducing the particle size of the manganese-based material, generating manganese vacancies, and changing the surface manganese valence state. An advanced oxidation system formed by the silicate modified manganese-based material and an oxidant has high removal rate and reaction rate for various organic compounds.
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公开(公告)号：US11850664B2
公开(公告)日：2023-12-26
申请号：US17451151
申请日：2021-10-15
发明人： Minda Yu , Mingxia Zheng , Beidou Xi , Jing Su , Yuanyuan Sun , Xiaosong He
IPC分类号： B22F9/24 , B22F9/04 , C02F1/70 , C02F101/34
CPC分类号： B22F9/24 , B22F9/04 , C02F1/705 , B22F2009/043 , B22F2201/10 , B22F2301/35 , C02F2101/345
摘要： A silicified modified zero-valent iron, whose surface layer is a silicon-containing oxide layer formed by silicate, which is obtained by the following method: dissolved silicate and micron iron powder are used as raw materials and mixed in proportion, and ball milling under an inert gas atmosphere to obtain the silicified modified zero-valent iron. The invention also discloses the application of silicified modified zero-valent iron in repairing polluted water bodies. The invention uses green silicate as silicon source to carry out surface silicification modification of micron zero-valent iron, which has simple operation, low cost and is convenient for large-scale production. Moreover, the prepared silicified zero-valent iron has good dispersibility, high reduction activity and strong recycling performance, and can be used for the treatment of various polluted water bodies and soil.
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公开(公告)号：US11530145B2
公开(公告)日：2022-12-20
申请号：US16937616
申请日：2020-07-24
发明人： Mingxia Zheng , Xiaosong He , Minda Yu , Beidou Xi , Xuhui Mao , Jiaxin Cui
IPC分类号： C02F1/72 , C02F101/34 , C02F103/06
摘要： The disclosure is a method for recovering groundwater contaminated with organic phenols. The method includes the step of injecting a remediation agent into the groundwater extracted from the stratum to be rehabilitated or ex-situ extracted, followed by the step of injecting manganese-based oxidant. By adding a suitable proportion of soluble silicon to the water to be treated as a remediation agent, the efficiency of manganese-based oxidant in the treatment of phenolic pollutants is enhanced based on interface properties and stability of various manganese oxides in the regulating and recovering process. The method for recovering groundwater contaminated with organic phenols provided by the disclosure has a simple process and is convenient to operate, the adopted chemicals are inexpensive and easy to obtain, cause little corrosion to the injection equipment, and has a wide range of applications in practice. The adopted oxidant will not produce halogenated toxic by-products during the treatment process.
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公开(公告)号：US20220118516A1
公开(公告)日：2022-04-21
申请号：US17451151
申请日：2021-10-15
发明人： Minda Yu , Mingxia Zheng , Beidou Xi , Jing Su , Yuanyuan Sun , Xiaosong He
摘要： A silicified modified zero-valent iron, whose surface layer is a silicic-containing oxide layer formed by silicate, which is obtained by the following method: dissolved silicate and micron iron powder are used as raw materials and mixed in proportion, and ball milling under an inert gas atmosphere to obtain the silicified modified zero-valent iron. The invention also discloses the application of silicified modified zero-valent iron in repairing polluted water bodies. The invention uses green silicate as silicon source to carry out surface silicification modification of micron zero-valent iron, which has simple operation, low cost and is convenient for large-scale production. Moreover, the prepared silicified zero-valent iron has good dispersibility, high reduction activity and strong recycling performance, and can be used for the treatment of various polluted water bodies and soil.
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