METHOD FOR PREPARING P-XYLENE
    1.
    发明公开

    公开(公告)号:US20240317658A1

    公开(公告)日:2024-09-26

    申请号:US18694415

    申请日:2021-12-10

    CPC classification number: C07C15/08 B01J29/40 B01J37/0201 C07C2529/40

    Abstract: A method for preparing p-xylene is provided. Raw materials containing methanol, naphtha and CO2 are introduced into a reactor filled with a catalyst for a reaction to produce p-xylene. By adding the methanol, the product distribution is adjusted, and the selectivity of p-xylene is obviously improved. In addition, components containing benzene and toluene in aromatic hydrocarbon products are returned to a reaction system and co-fed with the raw materials for a reaction to produce p-xylene, so that cyclic utilization of the raw materials is achieved, and the method has extremely high economic benefits. The method has a simple process and high feasibility, can greatly improve the selectivity and yield of p-xylene, has an important application value, and provides a new way for large-scale utilization of CO2.

    Production of alkylaromatic compounds

    公开(公告)号:US11964927B2

    公开(公告)日:2024-04-23

    申请号:US17766411

    申请日:2020-09-30

    Abstract: A process for producing an alkylaromatic compound comprises providing a first feed comprising an alkylatable aromatic compound and a second feed comprising an alkylating agent, wherein at least the first feed contains an impurity compound comprising at least one of nitrogen, halogens, oxygen, sulfur, arsenic, selenium, tellurium, phosphorus, and Group 1 through Group 12 metals The first feed is passed through an adsorbent comprising a metal-organic framework material under conditions effective to reduce the amount of impurity compound in the first feed and produce a purified first feed. The purified first feed and at least part of the second feed are then contacted with an alkylation catalyst composition under alkylation conditions effective to convert at least part of the alkylatable aromatic compound in the purified first feed to the desired alkylaromatic compound and produce an alkylation effluent.

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