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铅长石
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  pb-feldspar
     At medium temperature Pb 2+ can also enter the channel of feldspar with functions of ion exchange and lead to the formation of Pb-feldspar.
     在中温条件下Pb2+与钾长石发生离子交换反应,能生成铅长石物相。
短句来源
     , respectively. XPS analysis of reaction results shows that the binding energy of Pb 4f- 7/2 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.
     XPS分析表明Pb4f7/2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
短句来源
  相似匹配句对
     LEAD
    
短句来源
     LEAD IN POTASSIUM FELDSPAR AND CONTRIBUTION TO MINERALIZATION
     钾长石中的及其对成矿的贡献
短句来源
     LEAD ISOTOPIC COMPOSITIONS OF FELDSPAR AND ORE AND THEIR GEOLOGIC SIGNIFICANCE
     长石和矿石同位素组成及其地质意义
短句来源
     Study on Content of Lead in Tea
     茶叶中的
短句来源
     EXPERIMENTAL RESEARCH ON DE-IRONING OF FELDSPAR
     长石除铁试验研究
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The microchannel refers to structural channel of minerals with sperture from 0.3 nm to 2.0 nm. The microtunnel with K filling constructed by active Mn—O octahedron in cryptomelane is quite similar to that with Na and Ca fillings constructed by Si—O and Al—O tetragonal molecular sieve in zeolite. They have the function of molecular sieve. Here the author points out that ultra-microchannel of natural minerals has aperture below 0.3 nm. Most natural minerals with ultra-microchannel structures have the features...

The microchannel refers to structural channel of minerals with sperture from 0.3 nm to 2.0 nm. The microtunnel with K filling constructed by active Mn—O octahedron in cryptomelane is quite similar to that with Na and Ca fillings constructed by Si—O and Al—O tetragonal molecular sieve in zeolite. They have the function of molecular sieve. Here the author points out that ultra-microchannel of natural minerals has aperture below 0.3 nm. Most natural minerals with ultra-microchannel structures have the features of ion exchanges among geomaterials. The ultra-microchannel of feldspar that is half of the mass of the crust has been ignored due to its aperture being too small to understand. However, the author's recent experimental research work shows that feldspar has certain ion exchange functions and channel structure features under high or low temperature conditions. At higher temperature Na+ can go into the channel of feldspars. The content of Na_2O in feldspar increases up to 15.9 percent. At medium temperature Pb 2+ can also enter the channel of feldspar with functions of ion exchange and lead to the formation of Pb-feldspar. At room temperature about 97.94% Cd 2+ can be removed by feldspar and hence Cd-feldspar occurs. The effects of typical ultra-microchannel of feldspar are helpful to treat heavy metal pollution and dispose nucleus waste. The ultra-microchannel of natural minerals has played a special role in migration and exchange of geomaterials. The molecular sieves of the microchannel of handful natural minerals have the function of purifying molecular gas pollution, whereas the ionic sieves of ultra-microchannel of most natural minerals are likely to purify ionic water contaminates.

孔径在0.3~2.0nm范围内的矿物结构孔道属于通常意义上的微孔道,如天然锰钾矿结构中由Mn—O八面体构建并由K等充填其中的微孔道,类似于大家熟知的沸石中由Si—O和Al—O四面体所构建并由Na和Ca充填其中的微孔道,往往具有分子筛功能。本文重点提出孔径在0.3nm以下的天然矿物结构孔道为超微孔道。由于无机离子包括水分子均小于0.3nm,自然界中大多数无机矿物超微结构孔道能成为地球物质发生离子交换的场所而表现出离子筛功能。长期以来人们并没有把约占地壳质量一半以上的长石矿物归类为孔道结构矿物,主要归咎于其孔径过于微小,有关长石孔道离子交换效应更没有引起人们足够的重视。实验研究结果表明,无论是在高温条件下,还是在低温条件下,长石矿物都能表现出一定的离子交换性,具有明显的孔道结构矿物特征。在高温条件下Na+与钾长石发生离子交换反应,能形成Na2O含量达15.9%的钠长石。在中温条件下Pb2+与钾长石发生离子交换反应,能生成铅长石物相。在常温条件下Cd2+与钾长石发生离子交换反应,能生成镉长石物相。长石矿物所体现出的良好的超微孔道效应,在对重金属污染物无害化处理包括核废料安全性处置领域具有潜在应用价值。天...

孔径在0.3~2.0nm范围内的矿物结构孔道属于通常意义上的微孔道,如天然锰钾矿结构中由Mn—O八面体构建并由K等充填其中的微孔道,类似于大家熟知的沸石中由Si—O和Al—O四面体所构建并由Na和Ca充填其中的微孔道,往往具有分子筛功能。本文重点提出孔径在0.3nm以下的天然矿物结构孔道为超微孔道。由于无机离子包括水分子均小于0.3nm,自然界中大多数无机矿物超微结构孔道能成为地球物质发生离子交换的场所而表现出离子筛功能。长期以来人们并没有把约占地壳质量一半以上的长石矿物归类为孔道结构矿物,主要归咎于其孔径过于微小,有关长石孔道离子交换效应更没有引起人们足够的重视。实验研究结果表明,无论是在高温条件下,还是在低温条件下,长石矿物都能表现出一定的离子交换性,具有明显的孔道结构矿物特征。在高温条件下Na+与钾长石发生离子交换反应,能形成Na2O含量达15.9%的钠长石。在中温条件下Pb2+与钾长石发生离子交换反应,能生成铅长石物相。在常温条件下Cd2+与钾长石发生离子交换反应,能生成镉长石物相。长石矿物所体现出的良好的超微孔道效应,在对重金属污染物无害化处理包括核废料安全性处置领域具有潜在应用价值。天然矿物超微孔道在地球物质迁移与交换过程中一直发挥着鲜为人知的独特作用。极少数天然矿物微孔道分子筛效应孕育有净化分子型气体污染物的作用,而大多数天然矿物超微孔道离子筛效应却孕育有净化离子型水体污染物的作用。

Feldspar and Pb(NO_3)_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 2.57?, respectively. XPS analysis of reaction results shows that the binding energy of Pb 4f- 7/2 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...

Feldspar and Pb(NO_3)_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 2.57?, respectively. XPS analysis of reaction results shows that the binding energy of Pb 4f- 7/2 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.

对长石与Pb(NO_3)_2粉末在380℃条件下反应48h的产物进行XRD分析,显示出现了d值分别为6.54、3.42、3.32、3.27,2.57的铅长石的5个特征峰。XPS分析表明Pb4f7/2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

 
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