多孔α-Al2O3基陶瓷片状载体的制备与性能

doi:10.3724/SP.J.1077.2013.12441

无机材料学报 ›› 2013, Vol. 28 ›› Issue (06): 599-604.DOI: 10.3724/SP.J.1077.2013.12441 CSTR: 32189.14.SP.J.1077.2013.12441

多孔α-Al₂O₃基陶瓷片状载体的制备与性能

陈圣博¹, 刘旭光¹, 张宝泉^1,2

(1. 青岛科技大学材料学院, 青岛 266042; 2. 天津大学化学工程国家重点实验室, 天津 300072)

收稿日期:2012-07-15 修回日期:2012-09-24 出版日期:2013-06-20 网络出版日期:2013-05-20
作者简介:陈圣博(1984–), 男, 硕士研究生. E-mail: shenbo.chen625@gmail.com
基金资助:
国家自然科学基金(21136008)山东省泰山学者建设项目(ts20081119)

Preparation and Properties of Porous α-Al₂O₃ Based Ceramic Disk Substrates

CHEN Sheng-Bo¹, LIU Xu-Guang¹, ZHANG Bao-Quan^1,2

(1. College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China; 2. State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China)

Received:2012-07-15 Revised:2012-09-24 Published:2013-06-20 Online:2013-05-20
About author:CHEN Sheng-Bo. E-mail: shenbo.chen625@gmail.com
Supported by:
National Natural Science Foundation of China (21136008); Taishan Scholars Project of Shandong Province (ts20081119)

摘要/Abstract

摘要： 采用干压成型法制备了多孔α-Al₂O₃基陶瓷片, 研究了烧结温度和掺杂SiO₂对其结构、形貌和性能的影响. 提高烧结温度能增加α-Al₂O₃基陶瓷片的抗压强度, 但收缩率也会随之增大。最佳烧结温度为1180℃, 收缩率小于0.5%, 抗压强度大于80 MPa。当掺杂SiO₂粉体后, 陶瓷片中的无定形SiO₂在烧结过程中晶化形成方石英, 能够促进α-Al₂O₃陶瓷片的烧结。当SiO₂含量为12wt%, 并在1180℃下烧结时, 陶瓷片的收缩率仅为1.2%, 抗压强度大于110 MPa。与α-Al₂O₃陶瓷片相比, 其孔径更小但孔径分布更宽。研究表明, α-Al₂O₃和SiO₂/Al₂O₃陶瓷片均具有良好的分子筛膜生长活性。但由于载体具有不同的物化性质, 所制备的ZSM-5分子筛膜具有不同的形貌和尺寸。

关键词: 多孔氧化铝陶瓷, 收缩率, 抗压强度, 分子筛膜

Abstract: Porous α-Al₂O₃ based ceramics disks were prepared by dry pressure molding method. Influences of sintering temperature and SiO₂ dopant on the structure, morphology and properties were investigated. It was founded that compressive strength and shrinkage ratio of α-Al₂O₃ ceramic disk both increased with increasing sintering temperature. The shrinkage ratio and compressive strength was less than 0.5% and stronger than 80 MPa, respectively, while the optimum sintering temperature was chosen to be 1180℃. The sintering of α-Al₂O₃ ceramic disk would be enhanced by doping SiO₂, which crystallized into cristobalite phase from an amorphous phase during the sintering process. α-Al₂O₃ ceramic disk doped with 12wt% SiO₂ sintered at 1180℃ exhibited a stronger compressive strength (110 MPa) and a shrinkage ratio of 1.2%. The ceramic disk possessed a smaller pore size but a wider pore size distribution than that of the pure α-Al₂O₃ ceramic disk. It was demonstrated that both α-Al₂O₃ and SiO₂ doped α-Al₂O₃ ceramic disk substrates were favorable for the growth of ZSM-5 zeolite membranes. However, these ZSM-5 zeolite membranes showed different morphologies and crystal sizes, due to the difference in physicochemical properties of substrates.

Key words: porous Al₂O₃ ceramics, shrinkage ratio, compressive strength, zeolite membrane

中图分类号:

TQ174

陈圣博, 刘旭光, 张宝泉. 多孔α-Al₂O₃基陶瓷片状载体的制备与性能[J]. 无机材料学报, 2013, 28(06): 599-604.

CHEN Sheng-Bo, LIU Xu-Guang, ZHANG Bao-Quan. Preparation and Properties of Porous α-Al₂O₃ Based Ceramic Disk Substrates[J]. Journal of Inorganic Materials, 2013, 28(06): 599-604.

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多孔α-Al₂O₃基陶瓷片状载体的制备与性能

Preparation and Properties of Porous α-Al₂O₃ Based Ceramic Disk Substrates

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