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Microwave-assisted seed preparation for producing easily phase-transformed anatase to rutile

机译：微波辅助种子制剂以易于相转化的锐钛酶生产给金红石

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摘要

Titanium dioxide, as one of the most important optical materials, is usually manufactured by the hydrolysis of titanyl salts, in which the seeds are a key to affect product properties. In the sulfate process, hydrolysis normally leads to anatase which is then converted to rutile in a high-temperature calcination with the help of a crystal transforming agent. In this work, the initial seeds were prepared through microwave heating and then the seeds were introduced to the hydrolysis of dilute titanyl sulfate solution. The results showed that the hydrolysis product had a narrower particle size distribution compared with traditional processes, and it was much more easily converted to rutile product under low-temperature calcination in the absence of a crystal transforming agent. The microwave effects on the seed preparation conditions were evaluated, and the kinetic behavior of the seeds in hydrolysis was also studied.
机译：二氧化钛作为最重要的光学材料之一通常通过钛酸的水解制造，其中种子是影响产品性质的关键。 在硫酸盐过程中，水解通常导致锐钛矿，然后在晶体转化剂的帮助下在高温煅烧中转化为金红石。 在这项工作中，通过微波加热制备初始种子，然后将种子引入稀钛硫酸盐溶液的水解。 结果表明，与传统方法相比，水解产物具有较窄的粒度分布，并且在不存在晶体转化剂的情况下，在低温煅烧下更容易转化为金红石产物。 评估了对种子制备条件的微波效应，还研究了水解中种子的动力学行为。

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  • 来源
    《RSC Advances》 |2017年第72期|共8页
  • 作者

    Tang Siyang; Zhang Yaowen; Yuan Shaojun; Yue Hairong; Liu Changjun; Li Chun; Liang Bin;

  • 作者单位

    Sichuan Univ Multiphase Mass Transfer &

    React Engn Lab Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Multiphase Mass Transfer &

    React Engn Lab Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Multiphase Mass Transfer &

    React Engn Lab Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Multiphase Mass Transfer &

    React Engn Lab Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Multiphase Mass Transfer &

    React Engn Lab Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Multiphase Mass Transfer &

    React Engn Lab Chengdu 610065 Sichuan Peoples R China;

    Sichuan Univ Multiphase Mass Transfer &

    React Engn Lab Chengdu 610065 Sichuan Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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