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Reduction of OH~- ions in tellurite glasses using chlorine and oxygen gases

机译：使用氯气和氧气还原碲酸盐玻璃中的OH〜-离子

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摘要

Absorption losses in tellurite glasses due to OH ions were reduced by melting the glasses under a reactive atmosphere of Cl_2 + O_2 gas. Incorporation of dry Cl_2 + O_2 gas has a major influence on the reduction of OH~- species, which is found to be consistent with thermochemical data. Absorption loss due to OH~- ions in bulk glasses prepared from the as-received raw materials and processed under a reactive atmosphere was 1000 and 60 dB/m, respectively. Gaussian fits have been used to identify the different species of OH~- attached to the structural units present in the glass. All of the OH~- species (free and bonded to Te), units can be reduced by melting the starting raw materials in a reactive atmosphere of Cl_2 + O_2. The net reduction in OH~- absorbance at 3.2 urn was 1.1 cm~(-1), which is equivalent to 500 ppm. OH~- reduction in tellurite glasses using O_2 gas bubbling shows a reduction in the fundamental absorption band from 1.8 to 0.57 cm~(-1) after 75 min.
机译：通过在Cl_2 + O_2气体的反应气氛下熔化玻璃，减少了由OH离子引起的碲酸盐玻璃吸收损失。干燥的Cl_2 + O_2气体的掺入对OH_-种类的减少有很大的影响，这与热化学数据是一致的。由原样制备并在反应性气氛下加工的大块玻璃中，由于OH-离子引起的吸收损失分别为1000和60 dB / m。高斯拟合已用于识别附着在玻璃结构单元上的OH〜-的不同种类。可以通过在Cl_2 + O_2的反应性气氛中熔化起始原料来还原所有的OH_-种类（游离并键合到Te上）。在3.2 urn时，OH-吸光度的净减少为1.1 cm〜（-1），相当于500 ppm。使用O_2鼓泡将碲酸盐玻璃中的OH〜-还原显示75分钟后，基本吸收带从1.8降至0.57 cm〜（-1）。

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  • 来源
    《Journal of Materials Research》 |2013年第23期|3226-3233|共8页
  • 作者

    Purushottam Joshi; Billy Richards; Animesh Jha;

  • 作者单位

    Department of Mechanical and Manufacturing Engineering (MME), M. S. Ramaiah School of Advanced Studies, Bengaluru 560 058, India;

    Institute for Materials Research, School of Process, Environmental and Materials Engineering, The University of Leeds, Leeds LS2 9JT, United Kingdom;

    Institute for Materials Research, School of Process, Environmental and Materials Engineering, The University of Leeds, Leeds LS2 9JT, United Kingdom;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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