TY - JOUR
T1 - Synthesis and characterization of Fe doped mesoporous Al2O 3 by sol-gel method and its use in trichloroethylene combustion
AU - Lucio-Ortiz, Carlos J.
AU - De La Rosa, Javier Rivera
AU - Ramirez, Aracely Hernandez
AU - De Los Reyes Heredia, Jose A.
AU - Del Angel, Paz
AU - Muñoz-Aguirre, Severino
AU - De León-Covián, Lina M.
PY - 2011/5
Y1 - 2011/5
N2 - Two mesoporous alumina samples were synthesized using the sol-gel method, and these samples were tested as catalysts in trichloroethylene combustion reaction. One alumina sample was doped with Fe to study the influence of a small amount of this agent on the characteristics and properties of alumina as a catalyst. Both catalysts (pure alumina and alumina doped with Fe) were thoroughly characterized by different techniques, such as DTA/TGA, FT-IR, XRD, SEM and TEM, and the porous characterization was conducted using a N2 physisorption technique. The doping agent presented a particular influence on the morphology and textural porosity in the alumina catalyst and therefore, it exhibited different catalytic behavior than the pure alumina catalyst. For both catalysts, the crystalline phase of γ-alumina was reported using XRD technique, and the crystallite size ranged from 7.8 to 12.8 nm. Using TEM images, the alumina catalyst doped with Fe revealed to contain a mixture of three types of iron oxide (maghemite, magnetite and hematite), mainly as roughly spherical nanoparticles. For both alumina catalysts, trichloroethylene catalytic combustion was conducted on a packed bed reactor in air at a temperature range of 50 to 600 °C. The alumina catalyst doped with Fe showed a higher catalytic activity than pure alumina, mainly due to the presence of micropores and grain morphology of flat faces.
AB - Two mesoporous alumina samples were synthesized using the sol-gel method, and these samples were tested as catalysts in trichloroethylene combustion reaction. One alumina sample was doped with Fe to study the influence of a small amount of this agent on the characteristics and properties of alumina as a catalyst. Both catalysts (pure alumina and alumina doped with Fe) were thoroughly characterized by different techniques, such as DTA/TGA, FT-IR, XRD, SEM and TEM, and the porous characterization was conducted using a N2 physisorption technique. The doping agent presented a particular influence on the morphology and textural porosity in the alumina catalyst and therefore, it exhibited different catalytic behavior than the pure alumina catalyst. For both catalysts, the crystalline phase of γ-alumina was reported using XRD technique, and the crystallite size ranged from 7.8 to 12.8 nm. Using TEM images, the alumina catalyst doped with Fe revealed to contain a mixture of three types of iron oxide (maghemite, magnetite and hematite), mainly as roughly spherical nanoparticles. For both alumina catalysts, trichloroethylene catalytic combustion was conducted on a packed bed reactor in air at a temperature range of 50 to 600 °C. The alumina catalyst doped with Fe showed a higher catalytic activity than pure alumina, mainly due to the presence of micropores and grain morphology of flat faces.
KW - Alumina
KW - Catalytic combustion
KW - Doping
KW - Nanocrystallites
KW - Sol-gel
KW - Trichloroethylene
UR - http://www.scopus.com/inward/record.url?scp=79958791354&partnerID=8YFLogxK
U2 - 10.1007/s10971-011-2403-1
DO - 10.1007/s10971-011-2403-1
M3 - Artículo
AN - SCOPUS:79958791354
SN - 0928-0707
VL - 58
SP - 374
EP - 384
JO - Journal of Sol-Gel Science and Technology
JF - Journal of Sol-Gel Science and Technology
IS - 2
ER -