化工矿物与加工2024，Vol.53Issue(1)：15-20,6.DOI:10.16283/j.cnki.hgkwyjg.2024.01.003
水热法合成超细斜发沸石试验研究
Experimental study on hydrothermal synthesis of ultrafine clinoptilolite
摘要
Abstract
Clinoptilolite has strong adsorption and ion exchange capabilities,and is widely used in heavy metal and oil wastewater removal,sugar production,paper purification,preparation of anti-bacterial and anti-cancer drug additives,petrochemical catalytic cracking,national defense and CO2 removal.In order to obtain high-purity clinoptilolite,the clinoptilolite was prepared by hydrothermal method with NaOH,KOH,Al(OH)3,Na2 O·n SiO2 and H2 O as raw materials.The synthesis conditions of clinoptilolite were studied by XRD and crystal surface analysis.The results show that the optimum conditions for synthesis of clinoptilolite are n(SiO2)/n(Al2 O3)=11,n(OH-)/n(SiO2)= 0.55,n(H2O)/n(SiO2)=25～55,temperature 150℃,time 6 d.The synthesized clinoptilolite exhibited a sheet-like structure,complete characteristic peak and high purity.Its crystal cell composition is Na0.36 K6.58[(AlO2)6-(SiO2)25.26]·6.71 H2 O,n(SiO2)/n(Al2 O3)about 8.5,which belongs to the middle Si-Al ratio zeolite.The SEM analysis results show that the particle size is below 1.3 μm,indicating that the particle size is very fine.Its static water adsorption capacity is 34.3%,which meets the first-class requirements in HG/T 2690-2012"13X Molecular Sieve".The research results can provide reference for the precise synthesis of high-purity fine clinoptilolite.关键词
斜发沸石/水热法/特征峰/硅铝比/合成条件/静态水吸附/晶面分析Key words
clinoptilolite/hydrothermal method/characteristic peak/silicon aluminum ratio/synthesis conditions/static water adsorption/crystal plane analysis分类
化学化工引用本文复制引用
吴照洋,郝小非,孙启亮,张永兴,权藏玉..水热法合成超细斜发沸石试验研究[J].化工矿物与加工,2024,53(1):15-20,6.基金项目
河南省重点研发与推广专项-科技攻关项目(212102210183). （212102210183）
