离子交换反应合成铅长石的实验研究  

An experimental study of Pb-feldspar synthesis by ion exchange reaction

作　　者：刘瑞[1] 鲁安怀[2] 秦善[2] 

机构地区：[1]长春工程学院国土资源系,吉林长春130021 [2]北京大学地球与空间科学学院,北京100871

出　　处：《岩石矿物学杂志》2005年第6期511-514,共4页Acta Petrologica et Mineralogica

基　　金：国家重点基础发展规划前期研究专项(2001CCA02400)

摘　　要：对长石与Pb(NO3)2粉末在380℃条件下反应48 h的产物进行XRD分析,显示出现了d值分别为6.54、3.42、3.32、3.27,2.57A的铅长石的5个特征峰.XPS分析表明Pb4f/2在长石矿物中的结合能为138.39～138.44eV.实验证明Pb2+与长石结构中的碱性或碱土性离子发生了离子交换反应,生成了铅长石.Feldspar and Pb（NO3）2 power were mixed and reacted at 380℃. The product was analyzed with XRD. The XRD power diagram of the reaction results was observed, which had five strong reflection peaks of Pb-feldspar, with d values being 6.54, 3.42, 3.32, 3.27 and 2.57A, respectively. XPS analysis of reaction results shows that the binding energy of Pb 4f7/2 in feldspar is between 138.39 and 138.44 eV. Pb^2＋ can replace alkali and alkali earth elements in feldspar structure through ion exchange reactions, forming Pb- feldspar.

关 键 词：离子交换 铅长石 XRD XPS 

分 类 号：P578.968[天文地球—矿物学] P579[天文地球—地质学]