Mesoporous yttria-zirconia solid solution with improved textural properties prepared via lauric acid-assisted synthesis
Mesoporous yttria-zirconia solid solution with improved textural properties prepared via lauric acid-assisted synthesis
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通过月桂酸辅助合成制备具有改善结构性能的介孔氧化钇-氧化锆固溶体
DOI：
10.1016/j.ceramint.2020.06.312
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发表时间：
2020-07
影响因子：
5.2
通讯作者：
Chen Yaoqiang
中科院分区：
文献类型：
--
作者：
Wu Yang;Chen Jianjun;Deng Jie;Qu Pengfei;Shen Puqing;Zhang Guochen;Zhong Lin;Chen Yaoqiang
氧化钇-氧化锆（Y_2O_3-ZrO_2）陶瓷材料的结构性能（比表面积和孔容/孔径）对其在环境和工业催化领域的应用至关重要。在这项工作中，我们调整了材料的质地性质的月桂酸辅助共沉淀法具有较高的可操作性和成本效益。制备了月桂酸改性和未改性的氢氧化钇锆。然后分别在700、800、900和950 °C下煅烧两种氢氧化物，得到八种Y2 O3-ZrO 2氧化物。系统地研究了氢氧化物的表面性质、热分解行为以及氧化物的结构和织构性质。结果发现，月桂酸是化学键合的氢氧化物表面，这降低了微晶尺寸的氧化物。更重要的是，晶间聚集的氧化物显着抑制在热处理。结果表明，介孔Y2 O3-ZrO 2固溶体经高温煅烧后，其织构性能得到明显改善。所制备的材料具有更高的比表面积（69至24 m2/g）和孔体积（0.24至0.18 mL/g）比同类材料。这一工作可能会激发改进的加工技术，应用于开发具有优异织构性能的Y2 O3-ZrO 2陶瓷材料的想法。
The textural properties (specific surface area and pore volume/diameter) of yttria-zirconia (Y2O3-ZrO2) ceramic material are critically important to its application in environmental and industrial catalysis. In this work, we tuned the textural properties of the material by a lauric acid-assisted coprecipitation method with high operability and cost-effectiveness. Lauric acid-modified and non-modified yttrium-zirconium hydroxides were prepared. The two hydroxides were then calcined at 700, 800, 900 and 950 °C, respectively, resulting in eight Y2O3-ZrO2oxides. The surface properties and thermal decomposition behavior of the hydroxides and the structural and textural properties of the oxides were systematically investigated. It was found that lauric acid was chemically bound to the hydroxide surface, which decreased the crystallite size of the oxides. More importantly, intercrystalline aggregation in the oxides was significantly inhibited during the thermal treatment. As a result, the textural properties of mesoporous Y2O3-ZrO2solid solution were greatly improved even after the material was calcined at high temperatures. As-prepared materials have higher specific surface area (69 to 24 m2/g) and pore volume (0.24 to 0.18 mL/g) than reported congener materials. This work may stimulate ideas for improved processing techniques which were applied to develop Y2O3-ZrO2ceramic material with excellent textural properties.
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影响因子：
4.6
作者：
Ma, Zi-Feng;Tan, Xiaoyao;Meng, Xiuxia;Yang, Naitao;Meng, Bo
通讯作者：
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影响因子：
3.2
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DOI：
10.1016/j.apcata.2019.02.013
发表时间：
2019-04
期刊：
Applied Catalysis A: General
影响因子：
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作者：
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DOI：
10.1016/j.apcatb.2018.09.069
发表时间：
2019-03
期刊：
Applied Catalysis B: Environmental
影响因子：
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作者：
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通讯作者：
A. Serve;A. Boréave;B. Cartoixa;K. Pajot;P. Vernoux
DOI：
10.1021/jp405625x
发表时间：
2013-08-29
期刊：
The journal of physical chemistry. C, Nanomaterials and interfaces
影响因子：
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作者：
Köck EM;Kogler M;Bielz T;Klötzer B;Penner S
通讯作者：
Penner S