化工进展2025，Vol.44Issue(z1)：413-421,9.DOI:10.16085/j.issn.1000-6613.2025-0576
用于氢气提纯的改性载铜活性炭
Modified copper-carrying activated carbon for hydrogen purification
摘要
Abstract
Hydrogen,as a carbon-neutral energy carrier with diverse production pathways and application scenarios,requires efficient purification from industrial by-product gas streams containing CO,CO2,CH4 and N2 impurities.Particularly,CO removal is critical to meet the＜5μL/L purity standard for hydrogen fuel cells.Among purification technologies,adsorption separation stands out for its cost-effectiveness and scalability.This study developed copper-modified activated carbon adsorbents through an innovative"load-first-then-reduce"impregnation method using CuCl2·2H2O precursors.The CO adsorption performance was systematically evaluated through a custom-built gas separation system complemented by comprehensive characterization via BET surface area analysis,XRD crystallography and UV-vis spectroscopy.The gas adsorption isotherms(CO,CO2,CH4,N2,H2)of the modified activated carbon at 300K all met the Langmuir(R2=0.99)and Freundlich(R2=0.999)models.The adsorption capacities for the five gases were as follows:CO 20.06cm3/g and CO2 41.12cm3/g,which were much higher than those for CH4 14.20cm3/g,N2 3.86cm3/g and H2 0.57cm3/g.Modified activated carbon(AC)had significantly increased CO adsorption compared to the original AC,and was extremely selective to other gases(CO,CO2,CH4,N2)and hydrogen.Cyclic adsorption-desorption tests confirmed＞86％capacity retention after 10 cycles,indicating superior reversibility for industrial applications.This work provided a viable strategy for tailoring adsorbents to specific hydrogen-rich feed gas compositions,bridging the gap between low-cost purification and fuel cell-grade hydrogen production.关键词
活性炭/吸附剂/选择性/一氧化碳/氢气纯化Key words
activated carbon/adsorbent/selectivity/carbon monoxide/hydrogen purification分类
化学化工引用本文复制引用
刘颖,包成,张欣欣..用于氢气提纯的改性载铜活性炭[J].化工进展,2025,44(z1):413-421,9.基金项目
国家自然科学基金(52576190) （52576190）
国家重点研发计划(2021YFB2500401). （2021YFB2500401）
