无机材料学报2025，Vol.40Issue(5)：466-472,7.DOI:10.15541/jim20240502
Zn2+催化剂对酚醛树脂/乙二醇制备多孔碳微观孔结构的影响
Effect of Zn2+Catalyst on Microporous Structure of Porous Carbon Prepared from Phenolic Resin/Ethylene Glycol
摘要
Abstract
Microporous structure is crucial to the properties and applications of porous carbon materials,but how to modulate it by an ion catalyst faces a complex situation.Here,a uniform porous carbon was obtained from phenolic resin/ethylene glycol through polymerization-induced phase separation(PIPS)method.Meanwhile,the influences of Zn2+content and curing temperature on the microporous structure of porous carbon were studied.Regarding curing temperature,it was observed that the stability of porous carbon decreased with increasing temperature,adversely affecting the uniformity of microporous structure.At a curing temperature of 90℃,porosity,mean pore size,and median pore size of the porous carbon varied from 40.22%to 70.38%,49.8 nm to 279.4 nm,and 107.2 nm to 343.0 nm,respectively.Concerning Zn2+content,an initial increase was noted in porosity,median pore size and average pore size of the porous carbon with rising Zn2+content,followed by a decrease.Specifically,with 1.5%(in mass)Zn2+,the maximum pore size and porosity reached 343.0 nm and(70.38±0.37)%,respectively.These findings show that addition of Zn2+increases the curing degree and backbone polymerization,which may be attributed to a reduction in the reaction barrier for interstitial substitution of phenol structures.However,excessive Zn2+content leads to high polymerization levels in the resin mixture,impeding volatilization of the alcohol-rich phase and thus degrading the pore structure.In addition,introduction of Zn2+promotes graphitization,resulting in a more pronounced carbon skeleton than that of non-introduced sample.This research provides a theoretical basis for modulating the microstructure of porous carbon materials and preparation of structural carbide ceramics.关键词
多孔碳/聚合诱导相分离法/Zn2+催化剂/催化机理/孔结构Key words
porous carbon/polymerization-induced phase separation method/Zn2+catalyst/catalytic mechanism/pore structure分类
化学化工引用本文复制引用
郭子玉,朱云洲,王力,陈健,李红,黄政仁..Zn2+催化剂对酚醛树脂/乙二醇制备多孔碳微观孔结构的影响[J].无机材料学报,2025,40(5):466-472,7.基金项目
国家自然科学联合基金(U23A20563) （U23A20563）
国家重点研发计划(2021YFB3701500)Joint Funds of National Natural Science Foundation of China(U23A20563) （2021YFB3701500）
National Key R&D Program of China(2021YFB3701500) （2021YFB3701500）
