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    Catalyst for aromatization of long-carbon chain alkane and preparation method and use thereof
    1.
    发明授权
    Catalyst for aromatization of long-carbon chain alkane and preparation method and use thereof 有权

    公开(公告)号：US11331654B2

    公开(公告)日：2022-05-17

    申请号：US16882573

    申请日：2020-05-25

    申请人： Institute of Coal Chemistry, Chinese Academy of Sciences

    发明人： Weibin Fan ,  Jianguo Wang ,  Mei Dong ,  Qiuming Zhou ,  Zhangfeng Qin ,  Junten Li

    IPC分类号： C07C5/367 ,  B01J29/44 ,  B01J37/30 ,  B01J37/02 ,  B01J37/10 ,  C07C6/10 ,  C07C5/32 ,  C07C4/00 ,  C07C6/08 ,  C07C5/393 ,  C07C5/41 ,  C07C13/271

    摘要： The present invention provides a catalyst for aromatization of a long-carbon chain alkane and a preparation method thereof. In the present invention, a molecular sieve containing a BEA structure is taken as an active component and mixed with a carrier, and then the mixture is formed, dried and calcined to obtain the catalyst for aromatization of a long-carbon chain alkane. The active component is prepared by taking a Naβ molecular sieve as a raw material and modifying through the following steps of: first obtaining an Hβ molecular sieve through ammonium ion-exchange, and then conducting dealumination and silicon insertion treatment of the Hβ molecular sieve through first hydrothermal treatment; forming a mesoporous structure in a molecular sieve framework through second hydrothermal treatment; reducing the acidity of the catalyst by potassium ion exchange, and finally using metal modification to improve the capability of the catalyst for catalyzing the aromatization of the long-carbon chain alkane and enhancing the toluene selectivity. The catalyst provided by the present invention shows high stability in the aromatization of the long-chain alkane and has a service life up to 170 h or above and aromatic hydrocarbon selectivity up to 80%, and the selectivity to toluene in aromatic hydrocarbon products can reach 85.5%.

    CATALYST FOR AROMATIZATION OF LONG-CARBON CHAIN ALKANE AND PREPARATION METHOD AND USE THEREOF
    3.
    发明申请
    CATALYST FOR AROMATIZATION OF LONG-CARBON CHAIN ALKANE AND PREPARATION METHOD AND USE THEREOF 有权

    公开(公告)号：US20210362138A1

    公开(公告)日：2021-11-25

    申请号：US16882573

    申请日：2020-05-25

    申请人： Institute of Coal Chemistry, Chinese Academy of Sciences

    发明人： Weibin Fan ,  Jianguo Wang ,  Mei Dong ,  Qiuming Zhou ,  Zhangfeng Qin ,  Junfen Li

    IPC分类号： B01J29/44 ,  B01J37/30 ,  B01J37/10 ,  B01J37/02

    摘要： The present invention provides a catalyst for aromatization of a long-carbon chain alkane and a preparation method thereof. In the present invention, a molecular sieve containing a BEA structure is taken as an active component and mixed with a carrier, and then the mixture is formed, dried and calcined to obtain the catalyst for aromatization of a long-carbon chain alkane. The active component is prepared by taking a Naβ molecular sieve as a raw material and modifying through the following steps of: first obtaining an Hβ molecular sieve through ammonium ion-exchange, and then conducting dealumination and silicon insertion treatment of the Hβ molecular sieve through first hydrothermal treatment; forming a mesoporous structure in a molecular sieve framework through second hydrothermal treatment; reducing the acidity of the catalyst by potassium ion exchange, and finally using metal modification to improve the capability of the catalyst for catalyzing the aromatization of the long-carbon chain alkane and enhancing the toluene selectivity. The catalyst provided by the present invention shows high stability in the aromatization of the long-chain alkane and has a service life up to 170 h or above and aromatic hydrocarbon selectivity up to 80%, and the selectivity to toluene in aromatic hydrocarbon products can reach 85.5%.