知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

10 records (took 0.014 seconds)

    Composite catalyst for the photocatalytic isomerisation of norbornadiene to prepare quadricyclane and process for making the catalyst
    1.
    发明授权
    Composite catalyst for the photocatalytic isomerisation of norbornadiene to prepare quadricyclane and process for making the catalyst 有权

    公开(公告)号：US10137443B2

    公开(公告)日：2018-11-27

    申请号：US14648896

    申请日：2014-05-23

    Applicant: TIANJIN UNIVERSITY

    Inventor： Jijun Zou ,  Xiangwen Zhang ,  Li Wang ,  Qingfa Wang

    IPC: B01J31/02 ,  C07C5/22 ,  B01J35/00 ,  B01J37/00 ,  B01J37/04

    Abstract: The present invention discloses a composite catalyst for the photocatalytic isomerization of norbornadiene to prepare quadricyclane, comprising: a solid photocatalyst, selected from the group consisting of TiO2, Ti-MCM-41, Ti-SBA-15, ZnO, WO3, Ta2O5 or SrTiO3; and an organic photo-sensitizer loaded on the surface or in the channel of said solid photocatalyst, selected from benzophenone, acetophenone, Michler's Ketone, tetraethyl Michler's Ketone, and diethyl Michler's Ketone, where the organic photo-sensitizer is present in the solid photocatalyst in an amount of 0.5% to 20% by weight. The catalyst of the invention can catalyze a target reaction under the condition that no solvent is used, and the yield of the target product quadricyclane is higher. Furthermore, the catalyst of the invention has a stable activity, and it can be recycled. The invention further discloses a process for preparing the composite catalyst.

    Process for the preparation of a bicyclic fused-ring alkane
    2.
    发明授权
    Process for the preparation of a bicyclic fused-ring alkane 有权

    公开(公告)号：US10519081B1

    公开(公告)日：2019-12-31

    申请号：US16158326

    申请日：2018-10-12

    Applicant: Tianjin University

    Inventor： Jijun Zou ,  Genkuo Nie ,  Lun Pan ,  Xiangwen Zhang

    IPC: C07C1/20 ,  C07C13/47 ,  C07C5/02 ,  C07C13/50 ,  C07C5/25

    Abstract: A process for preparation of a bicyclic fused-ring alkane. In the presence of a bifunctional solid catalyst, one or more cyclitols undergo a C—C coupling reaction with itself or each other at a temperature and in a nitrogen gas atmosphere, to produce a bicyclic alkane precursor mixture; then, the nitrogen gas is replaced by hydrogen gas, and the bicyclic alkane precursor mixture is hydrogenated or hydrodeoxygenated at a temperature and under a pressure, to produce the bicyclic fused-ring alkane. The proportion of the bicyclic fused-ring alkane in the product as prepared according to the process is not lower than 80 wt %.

    Low-molecular mass organic gellant and preparation method and use thereof
    5.
    发明授权
    Low-molecular mass organic gellant and preparation method and use thereof 有权

    公开(公告)号：US11661417B2

    公开(公告)日：2023-05-30

    申请号：US17855574

    申请日：2022-06-30

    Applicant: Tianjin University

    Inventor： Lun Pan ,  Jijun Zou ,  Yang Liu ,  Xiangwen Zhang

    IPC: C07D317/08 ,  C07D407/06 ,  C10L5/40

    CPC classification number: C07D407/06 ,  C07D317/08 ,  C10L5/40

    Abstract: The present disclosure provides a low-molecular mass organic gellant and a preparation method and use thereof, belonging to the technical field of gelled fuels. The low-molecular mass organic gellant has a cyclopropane structure. The cyclopropane structure belongs to a high-tension structure, which endows the gellant with excellent gel properties; in addition, the high-tension cyclopropane structure is also capable of greatly improving a combustion performance of the gellant, shortening an ignition delay time of the fuel, and promoting combustion. Moreover, multiple hydroxyl groups contained in the low-molecular mass organic gellant is capable of effectively forming a gel through hydrogen bonding; therefore, the gellant has excellent gel and shear thinning properties for high-energy density fuel and energetic nanofluid fuel, with a critical gellant concentration of not greater than 1% when forming a stable gel.

    LOW-MOLECULAR MASS ORGANIC GELLANT AND PREPARATION METHOD AND USE THEREOF
    6.
    发明申请
    LOW-MOLECULAR MASS ORGANIC GELLANT AND PREPARATION METHOD AND USE THEREOF 有权

    公开(公告)号：US20230061028A1

    公开(公告)日：2023-03-02

    申请号：US17855574

    申请日：2022-06-30

    Applicant: Tianjin University

    Inventor： Lun Pan ,  Jijun Zou ,  Yang Liu ,  Xiangwen Zhang

    IPC: C07D407/06 ,  C10L5/40

    Abstract: The present disclosure provides a low-molecular mass organic gellant and a preparation method and use thereof, belonging to the technical field of gelled fuels. The low-molecular mass organic gellant has a cyclopropane structure. The cyclopropane structure belongs to a high-tension structure, which endows the gellant with excellent gel properties; in addition, the high-tension cyclopropane structure is also capable of greatly improving a combustion performance of the gellant, shortening an ignition delay time of the fuel, and promoting combustion. Moreover, multiple hydroxyl groups contained in the low-molecular mass organic gellant is capable of effectively forming a gel through hydrogen bonding; therefore, the gellant has excellent gel and shear thinning properties for high-energy density fuel and energetic nanofluid fuel, with a critical gellant concentration of not greater than 1% when forming a stable gel.

    Fused-ring alkane fuel and photocatalytic preparation process thereof
    7.
    发明授权
    Fused-ring alkane fuel and photocatalytic preparation process thereof 有权

    公开(公告)号：US10689309B1

    公开(公告)日：2020-06-23

    申请号：US16498386

    申请日：2018-07-09

    Applicant: TIANJIN UNIVERSITY

    Inventor： Jijun Zou ,  Lun Pan ,  Xiangwen Zhang ,  Qingfa Wang

    IPC: C10L1/04 ,  C07C1/247

    Abstract: A process for preparing a fused-ring alkane fuel, wherein the fused-ring alkane fuel has the following structure: wherein n is 1 or 2; R1, R2, R3, R4 and R5 are H or —CH3 or —CH2CH3; the fused-ring alkane fuel has a density of greater than 0.870 g/cm3, a freezing point of not higher than −50° C., and a net mass heat value of not less than 42.0 MJ/kg; the process for preparing a fused-ring alkane fuel, wherein the process includes steps of: (1) in a presence of ultraviolet light and a photocatalyst, a Diels-Alder cycloaddition reaction between a substituted or unsubstituted cyclic enone and a substituted or unsubstituted furan molecule occurs to produce a fuel precursor molecule: (2) the fuel precursor molecule obtained in the step (1) is subjected to hydrodeoxygenation to produce the fused-ring alkane fuel.

    Process for preparing perhydrofluorene or alkyl-substituted perhydrofluorene
    10.
    发明授权
    Process for preparing perhydrofluorene or alkyl-substituted perhydrofluorene 有权

    公开(公告)号：US10233135B2

    公开(公告)日：2019-03-19

    申请号：US15536569

    申请日：2016-07-11

    Applicant: TIANJIN UNIVERSITY

    Inventor： Jijun Zou ,  Lun Pan ,  Xiangwen Zhang ,  Qingfa Wang ,  Li Wang

    IPC: C07C1/20 ,  C07C2/86 ,  C07C29/32 ,  C07C45/61 ,  C07C13/567

    Abstract: The present invention discloses a process for preparing perhydrofluorene or alkyl-substituted perhydrofluorene, comprising the steps of: (1) reacting a phenolic compound or an aromatic hydrocarbon compound or an aromatic ketone compound or an aromatic ether compound with a benzyl compound to carry out an alkylation reaction in the presence of a first catalyst, thereby to produce substituted or unsubstituted diphenyl methane, wherein the first catalyst is an acidic catalyst; and (2) reacting the substituted or unsubstituted diphenyl methane with hydrogen gas to carry out an hydrogenation reaction or a hydrodeoxygenation reaction, thereby to produce perhydrofluorene or alkyl-substituted perhydrofluorene, wherein the second catalyst is a physical mixture of a metal catalyst and an acidic catalyst or a metal catalyst loaded on an acidic catalyst.

Patent Agency Ranking