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    Nano-Silica Dispersion Having Amphiphilic Properties And A Double-Particle Structure And Its Production Method
    1.
    发明申请
    Nano-Silica Dispersion Having Amphiphilic Properties And A Double-Particle Structure And Its Production Method 审中-公开

    公开(公告)号：US20190046939A1

    公开(公告)日：2019-02-14

    申请号：US15941712

    申请日：2018-03-30

    Applicant: PetroChina Company Limited

    Inventor： Jianhui Luo ,  Bo Jiang ,  Lipeng He ,  Pingmei Wang ,  Baoliang Peng ,  Jie Yang ,  Bin Ding ,  Yuanyang Li ,  Xiangfei Geng

    IPC: B01F17/54

    Abstract: The present invention provides a nano-silica dispersion having amphiphilic properties and a double-particle structure and its production method. The production method comprises: producing a lipophilically modified nano-silica alcosol which is denoted as a first reaction solution by adding a silane coupling agent containing a lipophilic group to a nano-silica alcosol as a raw material; producing a hydrophilically modified nano-silica alcosol which is denoted as a second reaction solution by adding a silane coupling agent containing a hydrophilic group into a nano-silica alcosol as a raw material; producing the nano-silica dispersion having amphiphilic properties and a double-particle structure by adding 3-aminopropyltriethoxysilane to the first reaction solution, stirring, then mixing the resultant with the second reaction solution. The present invention further provides a nano-silica dispersion having amphiphilic properties and a double-particle structure produced by the above production method. It has both hydrophilic and lipophilic properties, and has the double-particle structure, with a particle size of less than 100 nm. The production process is simple and low in cost.

    N,N,N′,N′-tetradodecyl-substituted diphenyl ether sulfonate anionic Gemini surfactant and synthesis method thereof
    2.
    发明授权
    N,N,N′,N′-tetradodecyl-substituted diphenyl ether sulfonate anionic Gemini surfactant and synthesis method thereof 有权

    公开(公告)号：US11629283B2

    公开(公告)日：2023-04-18

    申请号：US16691969

    申请日：2019-11-22

    Applicant: PetroChina Company Limited

    Inventor： Xiangfei Geng ,  Bin Ding ,  Jianhui Luo ,  Bo Huang ,  Jianyong Xie ,  Pingmei Wang ,  Yang Gao ,  Baoliang Peng

    IPC: E21B43/16 ,  C09K8/60 ,  C07C303/06 ,  C07C309/49

    Abstract: The present invention discloses a N,N,N′,N′-tetradodecyl-substituted diphenyl ether sulfonate anionic Gemini surfactant and the synthesis method thereof. It has a structural formula of: and is prepared in a two-step reaction comprising: S1. subjecting 4,4′-diaminodiphenyl ether and bromododecane to an amine alkylation reaction to obtain N,N,N′,N′-tetradodecyl-substituted diphenyl ether; and S2. sulfonating the N,N,N′,N′-tetradodecyl-substituted diphenyl ether with concentrated sulfuric acid to produce the target product, N,N,N′,N′-tetradodecyl-substituted diphenyl ether sulfonate. The surfactant of the present invention has a high surface activity and can be synthesized with a simple procedure under mild reaction conditions, and can be easily separated and purified. The surfactant of the present invention is promising in applications for alkaline/surfactant in tertiary oil recovery, for polymer/surfactant binary compound flooding, alkaline/surfactant/polymer tertiary compound flooding, microemulsion emulsifier, and the like, and may also be compounded with common surfactants to lower the cost, thereby enabling its application in a large scale.

    Nano-silica dispersion having amphiphilic properties and a double-particle structure and its production method
    4.
    发明授权
    Nano-silica dispersion having amphiphilic properties and a double-particle structure and its production method 有权

    公开(公告)号：US10682619B2

    公开(公告)日：2020-06-16

    申请号：US15941712

    申请日：2018-03-30

    Applicant: PetroChina Company Limited

    Inventor： Jianhui Luo ,  Bo Jiang ,  Lipeng He ,  Pingmei Wang ,  Baoliang Peng ,  Jie Yang ,  Bin Ding ,  Yuanyang Li ,  Xiangfei Geng

    IPC: B32B5/16 ,  B01F17/54 ,  B01F17/00

    Abstract: The present invention provides a nano-silica dispersion having amphiphilic properties and a double-particle structure and its production method. The production method comprises: producing a lipophilically modified nano-silica alcosol which is denoted as a first reaction solution by adding a silane coupling agent containing a lipophilic group to a nano-silica alcosol as a raw material; producing a hydrophilically modified nano-silica alcosol which is denoted as a second reaction solution by adding a silane coupling agent containing a hydrophilic group into a nano-silica alcosol as a raw material; producing the nano-silica dispersion having amphiphilic properties and a double-particle structure by adding 3-aminopropyltriethoxysilane to the first reaction solution, stirring, then mixing the resultant with the second reaction solution. The present invention further provides a nano-silica dispersion having amphiphilic properties and a double-particle structure produced by the above production method. It has both hydrophilic and lipophilic properties, and has the double-particle structure, with a particle size of less than 100 nm. The production process is simple and low in cost.

    Amphiphilic Molecular Sieve Containing Hydrophilic Group on the Outside and Lipophilic Group on the Inside and Production Method Thereof
    8.
    发明申请
    Amphiphilic Molecular Sieve Containing Hydrophilic Group on the Outside and Lipophilic Group on the Inside and Production Method Thereof 审中-公开

    公开(公告)号：US20190202705A1

    公开(公告)日：2019-07-04

    申请号：US16029215

    申请日：2018-07-06

    Applicant: PetroChina Company Limited

    Inventor： Jianhui Luo ,  Zongtao Zhang ,  Baoliang Peng ,  Runwei Wang ,  Lipeng He ,  Pingmei Wang ,  Bin Ding ,  Ying Wang ,  Xiangfei Geng

    IPC: C01B39/02 ,  C01B39/38

    Abstract: The present invention provides an amphiphilic molecular sieve containing a hydrophilic group on the outside and a lipophilic group on the inside and a production method thereof. The production method comprises: dispersing the ZSM-5 spherical nano-molecular sieve into toluene, adding thereto an organosilane containing a hydrophilic group and reacting at 40-80° C. for 2-16 h, to obtain a molecular sieve containing a hydrophilic group; placing the molecular sieve containing a hydrophilic group in an aqueous solution of sodium hydroxide and reacting at 50-90° C. for 10-50 min, to obtain a molecular sieve containing a hydrophilic group on the outside; dispersing the molecular sieve containing a hydrophilic group on the outside into toluene, adding thereto an organosilane containing a lipophilic group and reacting at 40-80° C. for 2-12 h, to obtain the amphiphilic molecular sieve containing a hydrophilic group on the outside and a lipophilic group on the inside. The present invention also provides an amphiphilic molecular sieve obtained by the above production method, which contains a hydrophilic group on the outside and a lipophilic group on the inside.

    Core-shell structured anionic nano microemulsion system, and preparation and application thereof
    10.
    发明授权
    Core-shell structured anionic nano microemulsion system, and preparation and application thereof 有权

    公开(公告)号：US11174424B2

    公开(公告)日：2021-11-16

    申请号：US16691944

    申请日：2019-11-22

    Applicant: PetroChina Company Limited

    Inventor： Bin Ding ,  Xiangfei Geng ,  Jianhui Luo ,  Yang Shi ,  Jianyong Xie ,  Bo Huang ,  Yang Gao ,  Pingmei Wang ,  Baoliang Peng

    IPC: C09K8/584

    Abstract: The invention discloses a core-shell structured anionic nano microemulsion system, and preparation and application thereof. The system comprises an anionic Gemini surfactant, an oil phase material, a solubilizer and water; wherein the microemulsion has a core-shell structure, with the outer shell being an anionic Gemini surfactant, and the inner core being an oil phase material. The anionic Gemini surfactant is N,N,N′,N′-dodecyl tetrasubstituted diphenyl ether sulfonate having the structural formula: The anionic nano-microemulsion system of the present invention is homogeneous and transparent, has a spherical core-shell structure, has a nanometer size (3 to 40 nm) as droplets, has a narrow particle size distribution, is not easy to agglomerate, has good stability, and has an ultra-low interfacial tension and a capability of reducing viscosity of crude oil.

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