RUBBER REINFORCING FILLER AND ITS PREPARATION METHOD BY ACTIVATION AND MODIFICATION OF COAL GANGUE

    公开(公告)号:US20230151188A1

    公开(公告)日:2023-05-18

    申请号:US17985179

    申请日:2022-11-11

    CPC classification number: C08K11/005 C08F36/08 C08K3/36 C08K9/04 C08K2201/005

    Abstract: A rubber reinforcing filler and a method for preparing rubber reinforcing filler by activation and modification of coal gangue are provided. The method includes the following steps: providing coal gangue raw material; crushing coal gangue raw materials; the crushed coal gangue raw materials are ultrafine grinding to obtain coal gangue particles; coal gangue particles were obtained by air flow classification. Activation of coal gangue particles; the activated gangue particles were surface modified and ground to obtain the modified gangue particles. The invention relates to the field of comprehensive utilization of coal gangue and the technical field of rubber filler. The method is simple and effective, which can complete the blending modification of coupling agent and activated coal gangue particles for surface modification at low cost, so as to avoid the waste of materials in the traditional modification process and realize the preparation of high quality rubber reinforcing filler.

    METHOD FOR PREPARING ACETIC ACID BY CATALYST

    公开(公告)号:US20240083832A1

    公开(公告)日:2024-03-14

    申请号:US18224584

    申请日:2023-07-21

    CPC classification number: C07C51/12 B01J23/44 B01J23/75 B01J37/06

    Abstract: A method for preparing acetic acid by catalyst including the following steps is provided, S1. preparing the hydrotalcite carrier by hydrothermal method; S2. ion exchange; S3. liquid phase reduction; S4. placing the CoPd/LDH catalyst obtained in S3 in a two-channel fixed bed step-by-step continuous reactor, carrying out the reaction at 100-400° C. and 0.1-20 MPa, synthesizing acetic acid by alternating feeding of CH4+H2+H2O and CO2+H2+H2O, with the alternating time of 50-300 s. The present invention replaces the traditional process of acetic acid production including the steps of methane and carbon dioxide reforming to produce syngas. The process flow is short, the reaction conditions are mild, and the energy consumption and cost are greatly reduced.

    PREPARATION METHOD OF DOPED ZnO CATALYST AND SYNTHESIS METHOD OF HIGHER ALCOHOL USING SAME

    公开(公告)号:US20230138719A1

    公开(公告)日:2023-05-04

    申请号:US17977514

    申请日:2022-10-31

    Abstract: The present disclosure provides a preparation method of a doped ZnO catalyst. The preparation method includes the following steps: mixing a precipitant and a first solvent to form a first solution having 1 mol/L to 5 mol/L of the precipitant by concentration; mixing one of a Cu salt or a Ga salt, a Zn salt, and a second solvent to form a second solution having Cu and Zn at a molar ratio of less than 0.05:1 and Ga and Zn at a molar ratio of less than 0.1:1; subjecting the first solution and the second solution to precipitation or hydrolysis at 50° C. to 90° C. to obtain a precipitate, and washing and drying the precipitate to obtain a precursor sample; and conducting calcination on the precursor sample at 300° C. to 500° C. for 3 h to 5 h to obtain a Cu-doped ZnO catalyst or a Ga-doped ZnO catalyst.

Patent Agency Ranking