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    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 %.

    Process for preparing perhydrofluorene or alkyl-substituted perhydrofluorene
    5.
    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.

    Low-molecular mass organic gellant and preparation method and use thereof
    6.
    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
    7.
    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
    8.
    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.

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