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    METHOD OF PREPARING METAL OXIDE-SILICA COMPOSITE AEROGEL AND METAL OXIDE-SILICA COMPOSITE AEROGEL PREPARED BY THE SAME
    1.
    发明申请
    METHOD OF PREPARING METAL OXIDE-SILICA COMPOSITE AEROGEL AND METAL OXIDE-SILICA COMPOSITE AEROGEL PREPARED BY THE SAME 有权

    公开(公告)号：US20230024770A1

    公开(公告)日：2023-01-26

    申请号：US17947414

    申请日：2022-09-19

    申请人： LG CHEM, LTD.

    发明人： Jong Hun KIM ,  Je Kyun LEE

    IPC分类号： B01J13/00 ,  C01B33/158

    摘要： Provided are a method of preparing a metal oxide-silica composite aerogel, and a metal oxide-silica composite aerogel having an excellent weight reduction property prepared by the method. The method includes a step of adding an acid catalyst to a first water glass solution to prepare an acidic water glass solution (step 1); a step of adding a metal ion solution to the acidic water glass solution to prepare a precursor solution (step 2); and a step of adding a second water glass solution to the precursor solution and performing a gelation reaction (step 3) to yield a metal oxide-silica composite wet gel, wherein, in steps 2 and 3, bubbling of an inert gas is performed during the adding of the metal ion solution or the second water glass solution, respectively.

    METHOD FOR PRODUCING SILICA AEROGEL BLANKET BY REUSING SUPERCRITICAL WASTE LIQUID
    3.
    发明申请
    METHOD FOR PRODUCING SILICA AEROGEL BLANKET BY REUSING SUPERCRITICAL WASTE LIQUID 审中-公开

    公开(公告)号：US20200331766A1

    公开(公告)日：2020-10-22

    申请号：US16753921

    申请日：2018-08-21

    申请人： LG CHEM, LTD.

    发明人： Kyoung Shil OH ,  Je Kyun LEE

    IPC分类号： C01B33/158

    摘要： Provided is a method for producing a silica aerogel blanket, the method comprising recovering and reusing a supercritical waste liquid generated after a supercritical drying process. Without putting in additional equipment investments or energy, supercritical waste liquid recovered after a supercritical drying process can be reused by lowering the content of ammonium ions (NH4+) present therein through a simple adjustment of the conditions for the supercritical drying process. Thus, it is possible to produce a silica aerogel blanket while reducing the production costs thereof and preventing the deterioration of thermal insulation performance of the silica aerogel blanket.

    METHOD FOR PRODUCING SILICA AEROGEL BLANKET AND APPARATUS FOR PRODUCING SAME
    4.
    发明申请
    METHOD FOR PRODUCING SILICA AEROGEL BLANKET AND APPARATUS FOR PRODUCING SAME 审中-公开

    公开(公告)号：US20200216322A1

    公开(公告)日：2020-07-09

    申请号：US16627564

    申请日：2018-08-21

    申请人： LG CHEM, LTD.

    发明人： Kyung Seok MIN ,  Je Kyun LEE

    IPC分类号： C01B33/152 ,  C01B33/146 ,  B05D1/18

    摘要： Provided is a method for producing a silica aerogel blanket and an apparatus for producing the same, which are capable of easily controlling the physical properties of a silica aerogel blanket by separately injecting silica sol and a gelation catalyst to control gelation time, improving aerogel pore structure to be uniform and improving thermal insulation performance by sufficiently and uniformly impregnating the silica sol and the gelation catalyst into a blanket, reducing the loss of silica sol and gelation catalyst by allowing the silica sol and the gelation catalyst to pass on an ascending slope before gelation to remove any excessive silica sol and gelation catalyst exceeding an appropriate impregnation amount, and providing a silica aerogel blanket having less process trouble, and less dust.

    METHOD OF PREPARING METAL OXIDE-SILICA COMPOSITE AEROGEL AND METAL OXIDE-SILICA COMPOSITE AEROGEL PREPARED BY USING THE SAME
    7.
    发明申请
    METHOD OF PREPARING METAL OXIDE-SILICA COMPOSITE AEROGEL AND METAL OXIDE-SILICA COMPOSITE AEROGEL PREPARED BY USING THE SAME 审中-公开

    公开(公告)号：US20180127278A1

    公开(公告)日：2018-05-10

    申请号：US15577747

    申请日：2016-06-01

    申请人： LG CHEM, LTD.

    发明人： Jong Hun KIM ,  Je Kyun LEE

    IPC分类号： C01B33/158 ,  C01B33/021 ,  B01J20/06 ,  B01J20/10

    摘要： Provided are a method of preparing a metal oxide-silica composite aerogel, which includes preparing metal oxide-silica composite precipitates by adding a metal salt solution to a silicate solution and performing a reaction, and washing the metal oxide-silica composite precipitates with a washing solvent having a surface tension at 20±5° C. of 30 mN/m or less and drying the washed metal oxide-silica composite precipitates, and a metal oxide-silica composite aerogel having increased specific surface area and pore properties as well as tap density, which is significantly reduced by a maximum of 78.6% in comparison to a composite aerogel prepared by using water as a typical washing solvent, prepared by the method.