• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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    • 专利摘要:
    Suspensions of Mesoporous Silica as Heat Exchange Fluid and Method for Preparation Summary: The present invention relates to a process for preparing a suspension of mesoporous silica particles as heat exchange fluid for the purpose of improving heat exchange capacity. The process involves the direct spreading of mesoporous silica particles to a base liquid containing at least one dispersant. The present invention also relates to the composition of a suspension as a heat exchange liquid, which consists of mesoporous silica particles, a base liquid and at least one dispersant. Addition of dispersants contributes to the formation of a stable suspension.
    公开号:SE1000924A1
    申请号:SE1000924
    申请日:2010-09-10
    公开日:2012-03-11
    发明作者:Mamoun Muhammed；Nader Nikkam；Muhammet Sadaka Toprak；Mohsin Saleemi；Shanghua Li
    申请人:
    IPC主号:
    专利说明:

    Although several studies of suspensions in different heat exchange fluids have already been reported, no reports of dispersal of mesoporous silica particles in water or organic media for the purpose of improving heat exchange applications have occurred.
    In particular, suspensions containing mesoporous silica particles offer several advantages over traditional liquids including thermal conductivity well above the traditional solid / liquid suspensions.
    This feature is highly desirable for thermal control systems and makes these types of suspensions excellent candidates for the next generation of heat exchange fluids.
    Summary of the Invention The object of the present invention is to improve the properties of traditional heat exchange liquids using mesoporous silica particles and their functional groups as hydroxyl, amino and carboxyl group but are not limited to them. In accordance with the present invention, a stable suspension of mesoporous silica particulate heat exchange fluids was disclosed. The suspension of the present invention is made by directly dispersing dry mesoporous silica particles into a mixture of a heat exchanging liquid and other additives together with dispersants and by means of a physical agitation / stirring, such as ultrasound, homogenizing mixer, vibration mixer but not limited thereto. If ultrasound is used, it is done in a preferably time position to prevent structural damage and changes in mesoporous silica particles.
    The present invention further relates to mesoporous silica particles having a pore size of from 2 nm to 50 nm. The present invention also relates to the base liquid being selected from water, alcohols hydrocarbons and oil, or glycol or its combination but is not limited thereto.
    The present invention further relates to dispersants selected from anionic, cationic, nonionic or zwitterionic dispersants but is not limited thereto.
    The present invention further relates to a method of preparing a dispersion consisting of mesoporous silica particles, a base liquid and at least one dispersant.
    The present invention further relates to the use as a heat exchange liquid dispersion consisting of mesoporous silica particles dispersed in a heat exchange liquid where the base liquid is selected from water, glycols, hydrocarbons or oil, where the dispersant is selected from anionic, cationic, non-ionic dispersants or zwitterions.
    DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a process for preparing a suspension of mesoporous silica particles as a heat exchange liquid to improve heat exchange ability. The process involves the direct dispersion of mesoporous silica particles into a base liquid containing at least one dispersant. The present invention also relates to the composition of a suspension as a heat exchange liquid, which consists of mesoporous silica particles, a base liquid and at least one dispersant. Addition of dispersant contributes to the formation of a stable suspension.
    The use of different article forms in definite or indefinite form in singulari this public document can also refer to plural forms unless otherwise stated. To facilitate the understanding of the invention set forth in the following publication, there are a number of terms defined below.
    The mes nitions The term mesoporous silica particles, from now on called MPSiO2, refers to silica particles that have a pore size between 2 nm and 50 nm.
    The term "MPSiO2-calcined" refers to calcined mesoporous silica particles.
    The term MPSiO2-NH2 refers to mesoporous silica particles with amino functional group.
    The term MPsiO2-COOH refers to mesoporous silica particles with carboxylic acid functional group.
    The term "mesoporous silica particles" in the present invention encompasses all structural variations and modifications of MPSiO2 discussed above, including its configurations, structural defects and variations, chemical changes, and functionality surface.
    Mesoporous silica particles are commercially available from various sources. MPSiO2-calcined, MPSiO2-NH2 and MPSiO2-COOH and can be obtained from NanologicaAB (Stockho | m) but is not limited to it.
    A variety of dispersants can be used in the present invention as dispersants to improve the stabilization of the liquid, for example, anionic, cationic, nonionic, zwitterionic, polymeric and non-polymeric dispersants.
    Combinations of polymeric and non-polymeric dispersants are preferred. These materials are available in the market from various sources.
    There is generally a hydrophobic functionality and a hydrophilic functionality in nonionic and anionic dispersants.
    Typical examples of non-ionic dispersants include fatty alcohols: cetyl alcohol, stearyl alcohol, cetostearyl alcohol (consisting mainly of cetyl alcohol and stearyl alcohol alcohols), oleyl alcohol; Polyoxyethylene glycol alkyl diphenyl ethers (Brij): Octaethylene glycol monododecyl ether, Pentaethylene glycol monododecyl ether; Polyoxypropylene glycol alkyl ethers: Glucoside alkyl ethers: decyl glucoside, Lauryl glucoside, Octyl glucoside; Polyoxyethylene glycol ethers octylphenol: Triton X-100, Polyoxyethylene glycol alkylphenol ethers: Nonoxynol-9, Glycerol alkyl esters: Glyceryl laurate Polyoxyethylene glycol sorbitan ester alkyl esters: polysorbates; Sorbitan alkyl esters: ranges; Cocamide MEA, cocamideDEA, Dodecyl dimethylamine oxide, and Block copolymers of polyethylene glycol and polypropylene glycol: The poloxamer arm is not limited to them.
    Examples of anionic dispersants are: secondary alkane sulfonates, sulfonated polycarboxylic acids, alkyl glyceryl sulfonates, alkylphenol ethylene sulfates, alkyl phosphates and sulfosuccinates. carboxylates, sulfonate sulfates, phosphates, phosphonates, are secondary alkane sulfonates, sulfonated polycarboxylic acids, alkylglyceryl sulfonates, alkylphenol sulfates ethylene, alkyl phosphates, and sulfosuccinates, quaternary, and amine oxides but are not limited thereto.
    Examples of cationic dispersants are: pH-dependent primary, secondary or tertiary amines, Octenidine dihydrochloride, Alkyltrimethylammonium salts: cetyl alcohol trimethylammonium formate bromide (CTAB) akahexadecyl trimethyl ammonium bromine, C are benzalkonium chloride (BAC), benzethonium chloride (BZT), 5-Bromo-5-nitro-1,3-dioxane, dimethyldistearylammonium chloride and Dioctadecyldimethylammonium bromide 4 (DODAB) but are not limited to these.
    Examples of zwitterionic dispersants are: secondary or tertiary amines or quaternary ammonium with sulfonates: CHAPS (3 - [(3-Cho | amidopropyl | dimethylammonio] -1-propanesulfonate), Sulfonates: Cocamidopropylhydroxysultaine, secondary or tertiary with carboxylic amines or quaternary amines : Amino acids, amino acids, betaines: CocamidopropylBetaine, and secondary or tertiary amines or quaternary ammonium with phosphates: lecithin, but not limited thereto.
    These materials are commercially available from various sources.
    The composition of heat exchange liquid consists of 1-50% by weight of MPSiO2 based on the total weight of the dispersion composition.
    The dispersant of the invention is present in the dispersion composition in a concentration of about 1 to 20% by weight based on the total weight of the dispersion composition.
    The dispersant compositions of the present invention have been prepared by a method consisting of a combination of MPSiO 2 with at least one dispersant and a base liquid for a suspension.
    EXAMPLES Example 1 Preparation of aqueous suspension including calcined-MPSiO2 An aqueous calcined-MPSiO2 was prepared by co-dispersing dry calcined-MPSiO2 in distilled water and dispersant according to the composition and conditions set forth in Table 1. The scattering was performed by ultrasound periodically for 25 minutes. prevent structural damage to calcined-MPSiO2.
    Component Description Weight (%) calcined-MPSiO2 Commercial Powder 1 dispersant CTAB 2 base liquid Distillate water 97 Ultrasonic time 25 min pH 8.95 Example 2 Preparation of aqueous suspension including MPSiO2-COOH An aqueous MPSiO2-COOH suspension has been prepared with dispersion of dry M and dispersants according to the composition and conditions set forth in Table 2. The spreading was performed by ultrasound periodically for 30 minutes with ultrasound to prevent structural damage to particles.
    Component Description Weight (%) MPSiO2-COOH Commercial Powder 3 dispersant CTAB 5 base liquid Distillate water 92 Ultrasound time 30 min pH 9 Example 3 Preparation of aqueous suspension including MPSiO2-NH2 An aqueous MPSiO2-NH2 suspension has been prepared with the dispersion of water-dry MPSi and dispersants according to the composition and conditions set forth in Table 3. The spreading was performed by ultrasound periodically for 25 minutes with ultrasound to prevent structural damage to silica particles.
    Table 3 Component Description Weight (%) MPSiO2-N H2 Commercial Powder 3 dispersant polyvinylpyrrolydone (pvp). 4.5 base liquid Ethylene glycol solution 92.5 Ultrasonic time 25 min pi-i 8.8 i
    权利要求:
    Claims (20)
    [1]
    A method of making a * suspension consisting of MPSiO2 in a liquid and at least one dispersant, for use as a heat exchange liquid.
    [2]
    The method of claim 1 wherein MPSiO2 has a pore size from 2 nm up to 50 nm.
    [3]
    The method of claim 1 wherein the liquid is selected from the group consisting of water, glycol, hydrocarbons or oil and combinations thereof.
    [4]
    The method of claim 1 wherein spreading methods are ultrasonic, mechanical agitation, homogenization or vibrational mixing.
    [5]
    The method of claim 1 wherein dispersants are anionic, cationic, non-ionic or zwitterionic.
    [6]
    The method of claim 5 wherein the anionic dispersants are selected from secondary alkane sulfonates, sulfonated polycarboxylic acids, alkylglyceryl sulfonates, alkylphenol sulfates ethylene, alkyl phosphates and sulfosuccinates. carboxylates, sulfonates, sulfates, phosphates, phosphonates, sulfosuccinates, quaternary and amine oxides.
    [7]
    The method of claim 5 wherein the cationic dispersants are selected from pH-dependent primary, secondary or tertiary amines, Octenidine dihydrochloride, Alkyltrimethylammonium salts: cetyl alcohol trimethylammonium formate bromide (CTAB), which is also called hexadecyltrimethylammonylmethylalkylmethylalkylammonylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylalkylmethylmethylalkyl (POEA), benzalkonium chloride (BAC), benzethonium chloride (BZT), 5-Bromo-5-nitro-1,3-dioxane, dimethyldistearylammonium chloride and Dioctadecyldimethylammonium bromide (DODAB).
    [8]
    The method of claim 5 wherein non-ionic dispersants are selected from fatty alcohols: cetyl alcohol, stearyl alcohol, cetostearyl alcohol (consisting essentially of acetyl alcohol and stearyl alcohol alcohols), oleyl alcohol; Polyoxyethylene glycol alkyl diphenyl ethers (Brij): Octaethylene glycol monododecyl ether, Pentaethylene glycol monododecyl ether, Polyoxypropylene glycol alkyl ethers: Glucoside alkyl ethers: decyl glucoside, Lauryl glucoside, Octyl glucoside; Polyoxyethylene glycol octylphenol ethers: Triton X-100, Polyoxyethylene glycol alkyl phenol ethers: Nonoxynol-9, Glycerol alkyl esters: Glyceryl laurate Polyoxyethylene glycol sorbitan alkyl esters: polysorbates; Sorbitan alkyl esters: ranges; Cocamide MEA, cocamide DEA, Dodecyl dimethylamine oxide, and Block copolymers of polyethylene glycol and polypropylene glycol: Poloxamers.
    [9]
    The method of claim 5 wherein zwitterionic dispersants secondary or tertiary amines or quaternary ammonium with sulfonates: CHAPS (3 - [(3-Cholamidopropyl) dimethylammonio] -1-propanesulfonate), Sultainer: Cocamidopropylhydroxysultaine, secondary or tertiary amines or quaternary ammonium carboxylates: Amino acids, amino acids, betaines: Cocamidopropyl Betaine, and secondary or tertiary amines or quaternary ammonium with phosphates: lecithin.
    [10]
    The method of claim 1 wherein the functionality of MPSiO2 is either hydroxyl, amino or carboxylic acid groups,
    [11]
    A suspension consisting of MPSiO2 in a liquid and at least one dispersant, for use as a heat exchange liquid.
    [12]
    The suspension of claim 11 wherein the MPSiO 2 has a pore size of from 2 nm up to 50 nm.
    [13]
    The method of claim 1 wherein the liquid is selected from the group consisting of water, glycol, hydrocarbons or hydrocarbon oils and combinations thereof.
    [14]
    The suspension of claim 11 wherein the dispersion of methods is ultrasound, mechanical agitation, homogenization or vibrational mixing. 1
    [15]
    The suspension of claim 11 wherein dispersants are anionic, cationic, non-ionic or zwitterionic.
    [16]
    The suspension of claim 11 wherein the anionic dispersants are selected from secondary alkane sulfonates, sulfonated polycarboxylic acids, alkylglyceryl sulfonates, alkylphenol sulfates ethylene, alkyl phosphates and sulfosuccinates.
    [17]
    The suspension of claim 11 wherein the cationic dispersants are selected from pH-dependent primary, secondary or tertiary amines, Octenidine dihydrochloride, Alkyltrimethylammonium salts: cetyl alcohol trimethylammonium formate bromide (CTAB) is also called hexadecyl trimethylamethylammonium bromide; , Polyethoxylated tallow amine (POEA), benzalkonium chloride (BAC), benzethonium chloride (BZT), 5-Bromo-5-nitro-1,3-dioxane, dimethyl distearylammonium chloride and Dioctadecyl dimethylammonium bromide (DODAB).
    [18]
    The suspension of claim 11 wherein non-ionic dispersants are fatty alcohols: cetyl alcohol, stearyl alcohol, cetostearyl alcohol (consisting essentially of cetyl alcohol and stearyl alcohol alcohols), oleyl alcohol; Polyoxyethylene glycol alkyl diphenyl ethers (Brij): Octaethylene glycol monododecyl ether, Pentaethylene glycol monododecyl ether, Polyoxypropylene glycol alkyl ethers:; Glucosideacyl ethers: decyl glucoside, Lauryl glucoside, Octyl glucoside; Polyoxyethylene glycol octylphenol ethers: Triton X-100, Polyoxyethylene glycol alkylphenol ethers: Nonoxynol-Q, Glycerol alkyl esters: Glyceryl laurate Polyoxyethylene glycol sorbitan alkyl esters: polysorbates; Sorbitan alkyl esters: ranges; Cocamide MEA, cocamideDEA, Dodecyl dimethylamine oxide, and Block copolymers of polyethylene glycol and polypropylene glycol: Poloxamers.
    [19]
    The suspension of claim 11 wherein the zwitterionic dispersants are secondary or tertiary amines or quaternary ammonium with sulfonates: CHAPS (3- (C : Amino acids, amino acids, betaines: Cocamidopropyl Betaine, and secondary or tertiary amines or quaternary ammonium with phosphates: lecithin.
    [20]
    The suspension of claim 11 wherein the functionality of MPSiO2 is hydroxy |, amino or carboxylic acid groups.
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    同族专利:
    公开号 | 公开日
    SE535443C2|2012-08-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2016-05-03| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1000924A|SE535443C2|2010-09-10|2010-09-10|The use of a suspension comprising mesoporous silica articles as heat exchanger liquid|SE1000924A| SE535443C2|2010-09-10|2010-09-10|The use of a suspension comprising mesoporous silica articles as heat exchanger liquid|
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