The needle-like structured porous mullite ceramic membrane supports were prepared using kaolin, Al2O3 and Al(OH)3 as raw materials by in ~situ reaction sintering. Al2O3/kaolin and Al(OH)3/kaolin mixtures with different contents of AlF3 additives were selected, respectively. The effects of different aluminium resources and doping amount of the additives on the needle like structured macroporous mullite support formation were investigated. Results show that topaz is formed prior to the formation of needle-like mullite and the needle-like mullite formation is closely related to the topaz content in samples. Formation mechanism of needle-like mullite is vapor-solid reaction mechanism. The needle-like structured porous mullite support with porosity of more than 35% and average pore size of 1.5μm is more easily prepared using the Al(OH)3/kaolin mixture as raw materials, and it’s quantity increases with the AlF3 content increasing.
CHEN Gang-Ling
,
QI Hong
,
XING Wei-Hong
,
XU Nan-Ping
. In situ Reaction Synthesis of Needle-like Macroporous Mullite Supports[J]. Journal of Inorganic Materials, 2008
, 23(3)
: 597
-601
.
DOI: 10.3724/SP.J.1077.2008.00597
[1] 徐南平. 面向应用过程的陶瓷膜材料设计、制备与应用. 北京: 科学出版社, 2005. 1.
[2]章俞之, 于云, 宋力昕, 等. 硅酸盐学报, 2005, 33 (8): 921--925.
[3] 俞建长, 徐卫军, 胡胜伟, 等(YU Jian-Chang, et al). 无机材料学报(Journal of Inorganic Materials), 2005, 20 (5): 1250--1256.
[4] Miao X. Materials Letters, 1999, 38 (3): 167--172.
[5] Kazemimoghadam M, Pak A, Mohammadi T. Microporous and Mesoporous Materials, 2004, 70: 127--134.
[6] 靳喜海, 高濂, 郭景坤(JIN Xi-Hai, et al). 无机材料学报(Journal of Inorganic Materials), 2001, 16 (3): 555--558.
[7] Mohammadi T, Pak A. Separation and Purification Technology, 2003, 30 (3): 241--249.
[8] Liu Y F, Liu X Q, Li G, et al. Journal of Materials Science, 2001, 36 (15): 3687--3692.
[9] Katsuki H, Furuta S, Shiraishi A, et al. J. Porous Mater., 1996, 2 (4): 299--305.
[10] Saito Y, Hayashi S, Yasumori A, et al. J. Porous Mater., 1996, 3 (4): 233--239.
[11] Katsuki H, Furuta S, Komarneni S. J. Porous Mater., 1996, 3 (2): 127--131.
[12] Katsuki H, Takagi H, Matsuda O. Ceram. Trans., 1993, 31: 137--146.
[13] Locsei B. Nature, 1961, 190 (4779): 907--908.
[14] Okada K, Otsuka N. J. Mater. Sci. Lett., 1989, 8 (9): 1052--1054.
[15] Ismail M G M U, Arai H, Nakai Z, et al. J. Am. Ceram. Soc., 1990, 73 (9): 2736--2739.
[16] Chen Yongjun, Chi Bo, Liu Qiuxiang, et al. Chem. Comμn., 2006, 26: 2780--2782.
[17] Shin Hyunho, Kim Cheol-Soo, Chang Soon-Nam. J. Am. Ceram. Soc., 2000, 83 (5): 1237--1240.
[18] Chen Yung-Feng, Wang Moo-chin, Hon Min-Hsiung. Journal of the Ceramic Society of Japan., 2003, 111 (8): 537--543.
[19] ASTM. Standard Test Methods for Pore Size Characteristics of Membrane Filters by Bubble Point and Mearn Flow Pore Test. F316-03, 2003.
[20] Chen Yung-Feng, Wang Moo-Chin, Hon Min-Hsiung. J. Eur. Ceram. Soc., 2004, 24 (8): 2389--2397.
[21] Haught D A, Talmy I G. Preparation of mullite Whiskers from Al2O3, SiO2 and AlF3 Powders. U.S.:4910172. 1990.
[22] Haught D A, Talmy I G. Preparation of mullite Whiskers. US. 4911902. 1990.
