TY - JOUR
T1 - Waste-to-resource preparation of a porous ceramic membrane support featuring elongated mullite whiskers with enhanced porosity and permeance
AU - Zhu, Li
AU - Dong, Yingchao
AU - Hampshire, Stuart
AU - Cerneaux, Sophie
AU - Winnubst, Louis
N1 - Funding Information:
This work was financially supported by the National Natural Science Foundation of China (no. 21301171 and no. 21376102 ), the Natural Science Foundation of Fujian Province, China (no. 2014J01215 ), Ningbo Natural Science Foundation, China (no. 2014A610004 ), and the Natural Science Foundation of Guangdong Province, China (no. S2013010012199 ).
Publisher Copyright:
© 2014 Elsevier Ltd.
PY - 2015/2/1
Y1 - 2015/2/1
N2 - Different from traditional particle packing structure, a porous structure of ceramic membrane support was fabricated, featuring elongated mullite whiskers with enhanced porosity, permeance and sufficient mechanical strength. The effect of additives (MoO3 and AlF3) and sintering procedure on open porosity, mechanical properties, pore size distribution, micro-structure, phase structure, and permeance of the membrane supports was characterized in detail. The introduction of MoO3 and AlF3 promoted formation of a porous whisker-interlocked structure, which effectively improved open porosity and permeance. A mullite membrane support containing 5wt.% MoO3 and 4wt.% AlF3 exhibited an open porosity as high as 48.6±0.5%, a mechanical strength of 81.2±3.2MPa at 1200°C, and the value of permeance was higher than the membrane without any additives. Such enhancements in porosity and permeance, with sufficient mechanical strength, were a result of tortuosity decrease due to a porous structure of interlocked mullite whiskers.
AB - Different from traditional particle packing structure, a porous structure of ceramic membrane support was fabricated, featuring elongated mullite whiskers with enhanced porosity, permeance and sufficient mechanical strength. The effect of additives (MoO3 and AlF3) and sintering procedure on open porosity, mechanical properties, pore size distribution, micro-structure, phase structure, and permeance of the membrane supports was characterized in detail. The introduction of MoO3 and AlF3 promoted formation of a porous whisker-interlocked structure, which effectively improved open porosity and permeance. A mullite membrane support containing 5wt.% MoO3 and 4wt.% AlF3 exhibited an open porosity as high as 48.6±0.5%, a mechanical strength of 81.2±3.2MPa at 1200°C, and the value of permeance was higher than the membrane without any additives. Such enhancements in porosity and permeance, with sufficient mechanical strength, were a result of tortuosity decrease due to a porous structure of interlocked mullite whiskers.
KW - Ceramic membrane support
KW - Mechanical strength
KW - Mullite whiskers
KW - Permeance
KW - Porosity
UR - http://www.scopus.com/inward/record.url?scp=84908307676&partnerID=8YFLogxK
U2 - 10.1016/j.jeurceramsoc.2014.09.016
DO - 10.1016/j.jeurceramsoc.2014.09.016
M3 - Article
SN - 0955-2219
VL - 35
SP - 711
EP - 721
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 2
ER -