MX9803701A - Procedimiento para la preparacion de aerogeles organicamente modificados, mediante el cual precipitan las sales formadas. - Google Patents

Procedimiento para la preparacion de aerogeles organicamente modificados, mediante el cual precipitan las sales formadas.

Info

Publication number
MX9803701A
MX9803701A MX9803701A MX9803701A MX9803701A MX 9803701 A MX9803701 A MX 9803701A MX 9803701 A MX9803701 A MX 9803701A MX 9803701 A MX9803701 A MX 9803701A MX 9803701 A MX9803701 A MX 9803701A
Authority
MX
Mexico
Prior art keywords
silicic acid
gel
precipitated out
organically modified
salts
Prior art date
Application number
MX9803701A
Other languages
English (en)
Inventor
Fritz Schwertfeger
Original Assignee
Hoechst Res & Tech Gmbh & Co
Gmbh & Co Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoechst Res & Tech Gmbh & Co, Gmbh & Co Kg filed Critical Hoechst Res & Tech Gmbh & Co
Publication of MX9803701A publication Critical patent/MX9803701A/es

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/157—After-treatment of gels
    • C01B33/158—Purification; Drying; Dehydrating
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/157—After-treatment of gels
    • C01B33/158—Purification; Drying; Dehydrating
    • C01B33/1585—Dehydration into aerogels
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/141—Preparation of hydrosols or aqueous dispersions
    • C01B33/142—Preparation of hydrosols or aqueous dispersions by acidic treatment of silicates
    • C01B33/143—Preparation of hydrosols or aqueous dispersions by acidic treatment of silicates of aqueous solutions of silicates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/16—Preparation of silica xerogels
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/06—Quartz; Sand
    • C04B14/064—Silica aerogel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Silicon Compounds (AREA)

Abstract

La invencion se refiere a un procedimiento para preparar aerogeles orgánicamente modificados, mediante el cual; a) se prepara un sol de ácido silícico a partir de una solucion acuosa de vidrio soluble, con ayuda de por lo menos un ácido orgánico y/o inorgánico, que tiene un valor de pH menor que o igual a 4.0; b) se policondensa a un gel de SiO2 el sol de ácido silícico obtenido, mediante la adicion de una base; c) se lava el gel obtenido en el paso b) con un solvente orgánico durante un tiempo necesario para que el contenido de agua del gel sea menor que o igual a 5% en peso; d) se silila superficialmente el gel obtenido en el paso c); y e) se seca el gel superficialmente sililado, obtenido en el paso d); caracterizándose dicho procedimiento porque el al menos un ácido forma con los cationes del vidrio soluble una sal difícilmente soluble en el sol deácido silícico; y antes del paso b), se precipita sustancialmente la sal difícilmente soluble formada, y se separa del sol de ácido silícico.
MX9803701A 1995-11-09 1998-05-08 Procedimiento para la preparacion de aerogeles organicamente modificados, mediante el cual precipitan las sales formadas. MX9803701A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19541715A DE19541715A1 (de) 1995-11-09 1995-11-09 Verfahren zur Herstellung von organisch modifizierten Aerogelen, bei dem die gebildeten Salze ausgefällt werden

Publications (1)

Publication Number Publication Date
MX9803701A true MX9803701A (es) 1998-11-30

Family

ID=7776975

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9803701A MX9803701A (es) 1995-11-09 1998-05-08 Procedimiento para la preparacion de aerogeles organicamente modificados, mediante el cual precipitan las sales formadas.

Country Status (12)

Country Link
US (1) US6210751B1 (es)
EP (1) EP0859740B1 (es)
JP (1) JP2000501370A (es)
KR (1) KR100501758B1 (es)
CN (1) CN1087271C (es)
AT (1) ATE184862T1 (es)
CA (1) CA2237096A1 (es)
DE (2) DE19541715A1 (es)
ES (1) ES2139392T3 (es)
MX (1) MX9803701A (es)
NO (1) NO982069L (es)
WO (1) WO1997017288A1 (es)

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DE19648798C2 (de) * 1996-11-26 1998-11-19 Hoechst Ag Verfahren zur Herstellung von organisch modifizierten Aerogelen durch Oberflächenmodifikation des wäßrigen Gels (ohne vorherigen Lösungsmitteltausch) und anschließender Trocknung
DE19718740A1 (de) 1997-05-02 1998-11-05 Hoechst Ag Verfahren zur Granulierung von Aerogelen
DE19718741A1 (de) 1997-05-02 1998-11-05 Hoechst Ag Verfahren zur Kompaktierung von Aerogelen
DE19752456A1 (de) * 1997-11-26 1999-05-27 Hoechst Ag Verfahren zur Herstellung von organisch modifizierten Aerogelen auf Basis von Siliciumtetrachlorid
DE19756633A1 (de) 1997-12-19 1999-06-24 Hoechst Ag Verfahren zur unterkritischen Trocknung von Lyogelen zu Aerogelen
DE19801004A1 (de) 1998-01-14 1999-07-15 Cabot Corp Verfahren zur Herstellung von im wesentlichen kugelförmigen Lyogelen in wasserunlöslichen Silylierungsmitteln
ITLE20050008A1 (it) * 2005-05-24 2006-11-25 Megatex S P A Filati di origine naturale e sintetica con caratteristiche di barriera al trasporto di calore ottenuti attraverso la deposizione di aerogel.
US7618608B1 (en) 2005-12-13 2009-11-17 Keller Companies, Inc. Aerogel and method of manufacturing same
US7750056B1 (en) 2006-10-03 2010-07-06 Sami Daoud Low-density, high r-value translucent nanocrystallites
WO2008044873A1 (en) * 2006-10-10 2008-04-17 Korea Institute Of Industrial Technology Method for preparing permanently hydrophobic aerogel and permanently hydrophobic aerogel prepared by using the method
KR100824291B1 (ko) * 2007-02-13 2008-04-22 주식회사 넵 표면개질된 나노크기입자의 실리카 제조 방법
KR100848856B1 (ko) * 2007-03-27 2008-07-29 주식회사 넵 영구적 소수성을 갖는 에어로겔의 제조 방법 및 이로부터제조된 영구적 소수성을 갖는 에어로겔
KR100868989B1 (ko) * 2007-05-23 2008-11-17 엠파워(주) 초소수성 실리카 에어로겔 분말의 제조방법
KR100924782B1 (ko) 2007-09-19 2009-11-03 주식회사 넵 영구적인 소수성을 갖는 고투광성 입상형 에어로겔제조방법 및 이로부터 제조된 입상형 에어로겔
KR20090032707A (ko) * 2007-09-28 2009-04-01 엠파워(주) 초소수성 실리카계 분말의 제조방법
CN101468907B (zh) * 2007-12-27 2012-03-07 上海暄洋化工材料科技有限公司 一种SiO2纳米复合绝热保温膏及其制备工艺
CN102198943B (zh) * 2011-04-21 2013-03-13 江苏大学 一种低成本常压干燥制备不同接触角硅基气凝胶的方法
CN102642841B (zh) * 2012-04-25 2016-07-27 陕西得波材料科技有限公司 一种常压制备低密度高性能SiO2气凝胶的方法
CN103272539B (zh) * 2013-05-07 2015-08-12 李光武 减压干燥制备气凝胶的方法
CA2929515C (en) * 2013-11-19 2019-12-31 Hecker Electronica Potencia Y Procesos S.A. Process for superimposing ac over dc used in copper, or other products, electrowinning or electrorefining processes, wherein the ac source is connected between two consecutive cells from the group of electrolytic cells using an inductor to inject ac and a capacitor to close the electrical circuit
KR101687952B1 (ko) * 2013-12-31 2016-12-20 연세대학교 산학협력단 실리카 에어로겔의 제조방법과 상기 방법을 이용하여 제조된 실리카 에어로겔
CN104030301B (zh) * 2014-06-18 2016-03-23 金承黎 一种二氧化硅气凝胶材料及其制备方法
WO2015192731A1 (zh) * 2014-06-18 2015-12-23 金承黎 一种硅基一元或多元氧化物气凝胶材料及其制备方法
ITUB20150924A1 (it) 2015-05-29 2016-11-29 N A M Nano Analysis & Mat S R L Processo sol-gel per la produzione di aerogeli di silice
CN104944887A (zh) * 2015-07-01 2015-09-30 卓达新材料科技集团有限公司 刚性二氧化硅气凝胶绝热板的制备方法
WO2017099488A1 (ko) * 2015-12-09 2017-06-15 주식회사 엘지화학 산화금속-실리카 복합 에어로겔의 제조방법 및 이로부터 제조된 산화금속-실리카 복합 에어로겔
KR101938369B1 (ko) 2015-12-09 2019-01-14 주식회사 엘지화학 산화금속-실리카 복합 에어로겔의 제조방법 및 이로부터 제조된 산화금속-실리카 복합 에어로겔
KR102002050B1 (ko) 2015-12-15 2019-10-21 주식회사 엘지화학 산화금속-실리카 복합 에어로겔의 제조방법 및 이로부터 제조된 산화금속-실리카 복합 에어로겔
CN105582866B (zh) * 2016-03-08 2022-12-09 浙江圣润纳米科技有限公司 一种射频辐射快速制备气凝胶的方法及生产线
CN106185959B (zh) 2016-09-14 2018-04-06 纳诺科技有限公司 一种以微乳液为前体快速制备气凝胶的方法
US11279625B2 (en) 2017-09-08 2022-03-22 Lg Chem, Ltd. Method of preparing metal oxide-silica composite aerogel and metal oxide-silica composite aerogel prepared by the same
KR102192354B1 (ko) 2017-09-08 2020-12-17 주식회사 엘지화학 산화금속-실리카 복합 에어로겔의 제조방법 및 이로부터 제조된 산화금속-실리카 복합 에어로겔
KR102488352B1 (ko) 2018-11-27 2023-01-13 주식회사 엘지화학 실리카 에어로겔의 제조방법
CN115304066A (zh) * 2022-08-22 2022-11-08 湖北硅金凝节能减排科技有限公司 一种耐高温气凝胶粉体的制备方法

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Also Published As

Publication number Publication date
CN1087271C (zh) 2002-07-10
EP0859740B1 (de) 1999-09-22
DE59603187D1 (de) 1999-10-28
US6210751B1 (en) 2001-04-03
ES2139392T3 (es) 2000-02-01
DE19541715A1 (de) 1997-05-15
JP2000501370A (ja) 2000-02-08
KR100501758B1 (ko) 2005-10-07
CA2237096A1 (en) 1997-05-15
KR19990067369A (ko) 1999-08-16
EP0859740A1 (de) 1998-08-26
NO982069D0 (no) 1998-05-06
NO982069L (no) 1998-05-06
ATE184862T1 (de) 1999-10-15
CN1204300A (zh) 1999-01-06
WO1997017288A1 (de) 1997-05-15

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