公开(公告)号：US20210322954A1

公开(公告)日：2021-10-21

申请号：US17060770

申请日：2020-10-01

Applicant: Tianjin University

Inventor： Lun Pan ,  Jijun Zou ,  Ying Chen ,  Xiangwen Zhang ,  Li Wang

IPC: B01J21/06 ,  B01J23/30 ,  B01J35/00 ,  C10L1/04

Abstract: The present disclosure relates to the field of the catalytic technologies, and provides a p-type TiO2/n-type WO3 heterojunction catalyst and its preparation and use in photochemical synthesis of fuels. The catalyst comprises p-type TiO2 and n-type WO3 supported on a surface of the p-type TiO2. The disclosure proposes to support n-type WO3 onto a surface of p-type TiO2. The catalyst has high catalytic efficiency, and is particularly suitable for use in photocatalytic processes for synthesizing fuels.

公开(公告)号：US09944574B2

公开(公告)日：2018-04-17

申请号：US14409448

申请日：2014-05-23

Applicant: TIANJIN UNIVERSITY

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

IPC: B01J19/12 ,  B01J35/00 ,  C07C5/22 ,  B01J31/02 ,  B01J31/34 ,  B01J31/36 ,  B01J31/38 ,  B01J31/26

CPC classification number: C07C5/2266 ,  B01J19/123 ,  B01J31/0208 ,  B01J31/0237 ,  B01J31/0239 ,  B01J31/0271 ,  B01J31/26 ,  B01J31/34 ,  B01J31/36 ,  B01J31/38 ,  B01J35/004 ,  C07C5/2213 ,  C07C5/222 ,  C07C2521/06 ,  C07C2523/02 ,  C07C2523/06 ,  C07C2523/20 ,  C07C2523/30 ,  C07C2531/02 ,  C07C2531/26 ,  C07C2531/34 ,  C07C2531/36 ,  C07C2531/38 ,  C07C2603/86 ,  Y02P20/582 ,  C07C13/68

Abstract: The invention discloses a continuous process for producing high-pure quadricyclane, in which “a reaction-rectification integral process” or “a reaction followed by rectification process” may be employed. The two processes both use a novel composite catalyst which is obtained by loading an organic photo-sensitizer on a solid photocatalyst, and the composite catalyst has a high activity and a good stability. In the reaction-rectification integral process, the composite catalyst is used by being blended with rectification fillers or covering the rectification fillers, so as to achieve the integration of the reaction and the rectification. In the reaction followed by rectification process, the composite catalyst and the rectification fillers are placed separately from each other. The two processes achieve a relatively short residence time of reactants, produce highly-pure quadricyclane, and reduce the formation of cokes.

公开(公告)号：US12162812B2

公开(公告)日：2024-12-10

申请号：US18621888

申请日：2024-03-29

Applicant: TIANJIN UNIVERSITY

Inventor： Lun Pan ,  Jijun Zou ,  Xinfang Zhang ,  Chengxiang Shi ,  Li Wang ,  Xiangwen Zhang

IPC: C07C13/68 ,  C07C1/207 ,  C07C45/45 ,  C07C49/423

Abstract: Provided are a precursor compound of a tetracyclic hydrocarbon and a preparation method thereof, and a tetracyclic hydrocarbon and a preparation method and use thereof. The precursor compound of the tetracyclic hydrocarbon with a structure shown in formula I has a polycyclic structure. The precursor compound is subjected to hydrodeoxygenation so as to be prepared into the tetracyclic hydrocarbon with a structure shown in formula II that has a high density (0.986 g/cm3), a high calorific value (41.14 MJ/L), and a low freezing point (less than −60° C.).

公开(公告)号：US11524276B2

公开(公告)日：2022-12-13

申请号：US17060770

申请日：2020-10-01

Applicant: Tianjin University

Inventor： Lun Pan ,  Jijun Zou ,  Ying Chen ,  Xiangwen Zhang ,  Li Wang

IPC: B01J21/06 ,  B01J23/30 ,  B01J35/00 ,  C10L1/04

Abstract: Provided is a p-type TiO2/n-type WO3 heterojunction catalyst and a preparation method and use thereof. The catalyst comprises p-type TiO2 and n-type WO3 supported on a surface of the p-type TiO2.

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.

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.