| 基于压电陶瓷的A型分子筛膜合成与吸附性能 |
| Synthesis and Gas Adsorption Properties of Zeolite A Membrane on Lead Free Piezoelectric Ceramics |
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| 摘要: 无铅压电陶瓷0.8Na0.5Bi0.5TiO3-0.2K0.5Bi0.5TiO3表面采用化学改性预涂晶种作为基底, 分别以微乳和澄清溶液法在基底上水热晶化合成了A型分子筛膜。通过XRD、SEM和FTIR对晶种及分子筛膜进行了表征, 通过压电谐振法测量甲烷吸附性能。结果表明：微乳和澄清溶液法均合成单一A型分子筛相, 1次合成分子筛膜的时间分别为6、9 h, 通过不同镀膜次数生成A型分子筛膜的形貌、膜厚不同。经A型分子筛膜修饰压电振子后, 其对甲烷气体的灵敏度可分别达到59 Hz/1%CH4、68 Hz/1%CH4。 |
| 关键词: 分子筛晶种 A型分子筛膜 无铅压电陶瓷 甲烷吸附 |
| 基金项目: 教育部新世纪优秀人才计划(No.NCET-11-1044)、国家自然科学基金(No.51372197)、陕西省重点科技创新团队(No. 2014KCT-04)项目资助。 |
| Abstract: Zeolite A membranes were synthesized on 0.8Na0.5Bi0.5TiO3-0.2K0.5Bi0.5TiO3 lead free piezoelectric ceramics surface via hydro-thermal synthesis in micro-emulsion solution and clear solution. The zeolite seeds were connected with ceramics surfaces modified by chemical method. The synthesized zeolites and membranes were characterized using XRD, SEM and FTIR. The amount of methane adsorption were measured by piezoelectric resonator method. The results show the A-type zeolite single phase is obtained both by micro-emulsion solution and clear solution. The first coating times of them are designed as 6 and 9 h separately, and the thickness and morphology of zeolite membranes are changed with different coating times. The sensitivity of piezoelectric vibrator can be achieved to 59 Hz/1%CH4 and 68 Hz/1%CH4 using zeolite A membranes obtained by micro-emulsion solution and clear solution as adsorption layer. |
| Keywords: zeolite seeds A-type zeolite membrane lead-free piezoelectric ceramics methane adsorption |
| 投稿时间：2014-09-30 修订日期：2014-12-18 |
| 摘要点击次数: 1703 |
| 全文下载次数: 1759 |
| 龙丽霞,杜慧玲,安群力,史翔,陈剑.基于压电陶瓷的A型分子筛膜合成与吸附性能[J].无机化学学报,2015,31(3):529-535. |
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