有色金属材料与工程2025，Vol.46Issue(6)：57-68,12.DOI:10.13258/j.cnki.nmme.20250226002
高比表面积多组分NaY分子筛的介孔结构调控及其CO2吸附性能
Modulating mesoporous structure and CO2 adsorption property of multicomponent NaY molecular sieves with high specific surface area
摘要
Abstract
The introduction of mesopores into the microporous structure of zeolite molecular sieves(Sodium Y zeolite,NaY)can significantly enhance their mass transfer and diffusion capabilities as well as adsorption performance.In this work,mesoporous NaY molecular sieves with a high specific surface area were successfully synthesized via a multicomponent Ca2+and K+co-doping strategy without the use of templates or structure-directing agents.A systematic study was conducted on the mesoporous structure and CO2 adsorption properties of the as-synthesized multicomponent NaY molecular sieves.The results show that the specific surface area of the NaY molecular sieve prepared by Ca2+and K+co-doping(designated as NaCaKY)reaches up to 560 m2/g,which is significantly higher than the original 464 m2/g of pure NaY.Meanwhile,NaCaKY not only exhibits the highest specific surface area but also possesses a larger pore diameter and pore volume,which are 5.71 nm and 0.43 cm3/g,respectively.This indicates that Ca2+and K+co-doping can effectively regulate the mesoporous structure of NaY.Furthermore,the introduction of Ca2+and K+leads to a significant improvement in the CO2 adsorption performance of NaCaKY,increasing from 0.83 mmol/g for pure NaY to 1.15 mmol/g.This fully demonstrates that the synthesized multicomponent NaCaKY molecular sieve is an excellent carrier material for CO2 adsorption.关键词
NaY型分子筛/离子掺杂/比表面积/介孔结构/CO2吸附Key words
molecular sieve/ion doping/specific surface area/mesoporous structure/CO2 adsorption分类
化学化工引用本文复制引用
陈立梓,洪晓明,陈爱英..高比表面积多组分NaY分子筛的介孔结构调控及其CO2吸附性能[J].有色金属材料与工程,2025,46(6):57-68,12.基金项目
国家自然科学基金资助项目(51771121,52061028) （51771121,52061028）
中国能源投资集团科技项目(NMAZQ-SC-2024-012) （NMAZQ-SC-2024-012）
