Preparation method for high temperature resistant macroporous cation exchange resin catalyst

耐高温大孔阳离子交换树脂催化剂的制备方法

Abstract

本发明一种耐高温大孔阳离子交换树脂催化剂的制备方法,采用C4~C25的直链饱和酸或不饱和酸甘油酯的任一组分或任两种或任两种以上组分的混合物作致孔剂,制成含致孔剂的苯乙烯-多乙烯基苯共聚物白球,再用有机溶剂对共聚物中的致孔剂和低分子杂质进行抽提,再在催化剂存在下对大孔共聚物进行卤化反应。再对卤化产物进行磺化反应。本发明采用的致孔剂其极性与聚合单体极性相近,在聚合过程中能形成更为均匀的孔道;为环保材料,没有毒性,而且价廉易得。本发明只用一种低沸点、低毒的烃类溶剂对孔结构进行清理,操作简单,无三废排放。清理孔结构后的白球经卤化和磺化后,可以得到孔结构均匀、耐高温性能好、催化活性高的树脂催化剂。
The present invention provides a preparation method for a high temperature resistant macroporous cation exchange resin catalyst. According to the preparation method, a linear chain saturated acid with carbon atoms of 4-25, any one component selected from a unsaturatcd fatty acid glyceride, or a mixture is adopted as a pore-foaming agent to prepare styrene-divinylbenzene copolymer containing the pore-foaming agent, wherein the mixture comprises two or more components selected from the unsaturatcd fatty acid glyceride; an organic solvent is adopted to extract the pore-foaming agent and low molecular weight impurities in the copolymer; the macroporous polymer is subjected to a halogenating reaction in the presence of a catalyst; the resulting halogenated product is subjected to a sulfonationreaction. According to the present invention, the polarity of the used pore-foaming agent by the preparation method of the present invention is similar to the polarity of the monomer, such that uniform porous channels can be formed during the polymerization process; the used materials by the preparation method of the present invention have characteristics of environmental protection, no toxicity,cheap price and easy availability; during the preparation process of the present invention, only a hydrocarbon solvent with low boiling point and low toxicity is adopted to clean the pore structure, such that the operation is simple and three wastes are not discharged; the pore structure-cleaned styrene-divinylbenzene copolymer is subjected to the halogenation and the sulfonation to obtain the resin catalyst with uniform pore structure, good high temperature resistance and high catalytic activity.

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (2)

    Publication numberPublication dateAssigneeTitle
    CN-1389297-AJanuary 08, 2003中国石化集团齐鲁石油化工公司Prepn. of macroporous cation exchange resin catalyst with high exchange capacity
    US-4269943-AMay 26, 1981Rohm And Haas CompanyThermally stable resins prepared by bromination or chlorination of aromatic polymer beads followed by sulphonation

NO-Patent Citations (0)

    Title

Cited By (4)

    Publication numberPublication dateAssigneeTitle
    CN-103509149-AJanuary 15, 2014中国石油化工股份有限公司具有高温热稳定性的阳离子交换树脂的制备方法
    CN-105542052-AMay 04, 2016王金明一种己内酰胺重排催化剂的生产方法
    CN-105542052-BDecember 26, 2017王金明一种己内酰胺重排催化剂的生产方法
    CN-106008770-AOctober 12, 2016中国石油大学(华东)Preparation method of environment-friendly expanded polystyrene material