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玻璃摻雜量對Ca0.8Sr0.2TiO3陶瓷作為介質(zhì)阻擋層等離子體放電分解CO2的影響
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清華大學(xué),清華大學(xué),清華大學(xué),清華大學(xué)

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內(nèi)蒙古自然科學(xué)基金重大項(xiàng)目（2013ZD10）


Experimental investigation of Ca0.8Sr0.2TiO3 ceramics as dielectrics for a cylindrical dielectric barrier discharge reactor i
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Tsinghua University,Tsinghua Univeraity,Tsinghua University,Tsinghua University

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    摘要:

    通過液相燒結(jié)法成功制備出不同玻璃摻雜量的Ca0.8Sr0.2TiO3陶瓷材料，并將該陶瓷材料作為介質(zhì)阻擋層在圓柱型放電反應(yīng)器中分解二氧化碳。研究結(jié)果發(fā)現(xiàn)，隨玻璃摻雜量的增加，Ca0.8Sr0.2TiO3陶瓷的表面電阻增大，但在所研究的溫度范圍內(nèi)，Ca0.8Sr0.2TiO3的介電常數(shù)并沒有隨玻璃摻雜量的變化而顯著變化。掃描電鏡結(jié)果表明，晶粒尺度和顆粒間玻璃相厚度隨玻璃摻雜量增加而增大。另外，二氧化碳的轉(zhuǎn)化率和轉(zhuǎn)化效率隨陶瓷中玻璃量的增加而提高。進(jìn)一步采用Malter效應(yīng)模擬放電和介電特性，根據(jù)該模型，可以解釋轉(zhuǎn)化特性與陶瓷樣品中玻璃含量之間的關(guān)系。

    Abstract:

    The Ca0.8Sr0.2TiO3 ceramics with different amounts of glass additions were successfully prepared by liquid phase sintering and used as dielectric barriers in a cylindrical dielectric barrier discharge reactor to decompose carbon dioxide at atmospheric pressure. It is found that the surface resistivity increases with increasing glass content. While the dielectric constant does not change obviously with the increase of the glass content in the investigated temperature range. The scanning electron microscope observations indicated that both the grain size and the thickness of intergranular glassy phases increase with the increase of the glass content. More importantly, the conversion rate and conversion efficiency of carbon dioxide improves with the increase of glass content in the ceramics. Furthermore, a combined discharge analysis and dielectric characterization are modeled with a Malter effect approach. From this model, it is possible to interpret the relationship between the conversion characteristics and the glass content in the ceramic samples.

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宋曉貞,張勇,曲富洋,汪向榮.玻璃摻雜量對Ca0.8Sr0.2TiO3陶瓷作為介質(zhì)阻擋層等離子體放電分解CO2的影響[J].稀有金屬材料與工程,2016,45(12):3037~3042.[songxiaozhen, zhang yong, qufuyang, wangxiangrong. Experimental investigation of Ca0.8Sr0.2TiO3 ceramics as dielectrics for a cylindrical dielectric barrier discharge reactor i[J]. Rare Metal Materials and Engineering,2016,45(12):3037~3042.]
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  • 收稿日期:2014-08-17
  • 最后修改日期:2014-11-29
  • 錄用日期:2014-12-25
  • 在線發(fā)布日期: 2017-02-06
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