TY - JOUR
T1 - Synthesis of a novel porous material comprising carbon/alumina composite aerogels monoliths with high compressive strength
AU - Zhong, Ya
AU - Kong, Yong
AU - Shen, Xiaodong
AU - Cui, Sheng
AU - Yi, Xibin
AU - Zhang, Junjun
PY - 2013
Y1 - 2013
N2 - Resorcinol-formaldehyde/alumina composite (RF/Al2O3) gels were initially prepared by using sol-gel techniques, and then dried to aerogels with supercritical fluid CO2. After thermal treatment in argon atmosphere, RF/Al2O3 aerogels were successfully converted to monolithic carbon/alumina composite (C/Al2O3) aerogels. The samples were characterized by BET, SEM, TEM and XRD, and the compressive strengths were measured. The experimental results showed that the C/Al2O3 aerogels exhibited an interpenetrating framework with high mesoporosity. The as-synthesized C/Al2O3 aerogels consisted of spherical carbon particles and alumina (fibrous or columnar), which had high BET surface area (576-831 m2/g) and showed high compressive strength (5.4-9.1 MPa) and Young's modulus (286.95-476.71 MPa). These novel C/Al2O3 aerogels could possibly be used as thermal isolates, catalysts and adsorbents.
AB - Resorcinol-formaldehyde/alumina composite (RF/Al2O3) gels were initially prepared by using sol-gel techniques, and then dried to aerogels with supercritical fluid CO2. After thermal treatment in argon atmosphere, RF/Al2O3 aerogels were successfully converted to monolithic carbon/alumina composite (C/Al2O3) aerogels. The samples were characterized by BET, SEM, TEM and XRD, and the compressive strengths were measured. The experimental results showed that the C/Al2O3 aerogels exhibited an interpenetrating framework with high mesoporosity. The as-synthesized C/Al2O3 aerogels consisted of spherical carbon particles and alumina (fibrous or columnar), which had high BET surface area (576-831 m2/g) and showed high compressive strength (5.4-9.1 MPa) and Young's modulus (286.95-476.71 MPa). These novel C/Al2O3 aerogels could possibly be used as thermal isolates, catalysts and adsorbents.
KW - Aerogels
KW - Compressive strength
KW - Resorcinol-formaldehyde
KW - Supercritical fluid CO
KW - Thermal treatment
UR - http://www.scopus.com/inward/record.url?scp=84874752898&partnerID=8YFLogxK
U2 - 10.1016/j.micromeso.2013.01.021
DO - 10.1016/j.micromeso.2013.01.021
M3 - 文章
AN - SCOPUS:84874752898
SN - 1387-1811
VL - 172
SP - 182
EP - 189
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
ER -