TY - JOUR
T1 - In situ hydrothermally synthesized mesoporous LaCoO3/SBA-15 catalysts
T2 - High activity for the complete oxidation of toluene and ethyl acetate
AU - Deng, Jiguang
AU - Zhang, Lei
AU - Dai, Hongxing
AU - AU, Chak Tong
N1 - Funding Information:
This work was supported by the RGC, HKSAR (HKBU 200106), and the research activities conducted in BJUT was financed by the NSF of Beijing Municipality (Key project (Class B): KZ200610005004) and PHR (IHLB) of Beijing Municipality.
PY - 2009/1/15
Y1 - 2009/1/15
N2 - Mesoporous yLaCoO3/SBA-15 (y = 10-50 wt%) catalysts were prepared and characterized for the combustion of toluene and ethyl acetate (EA). The results show that well-ordered mesoporous LaCoO3/SBA-15 catalysts of high surface areas (338-567 m2/g) could be fabricated by a facile in situ method of hydrothermal treatment. The particles of perovskite-type LaCoO3 were highly dispersed on the walls of pore channels. The ordered mesoporous structure and high dispersion of LaCoO3 are beneficial to the adsorption and activation of toluene and EA molecules. We found that in terms of specific activity, the in situ fabricated 35LaCoO3/SBA-15 and 40LaCoO3/SBA-15 is, respectively, superior to 35LaCoO3/SBA-15_imp (generated by incipient wetness impregnation method) and bulk LaCoO3 (prepared by sol-gel method) in catalytic performance. Based on the above results, we conclude that the excellent performance can be attributed to the good dispersion of highly reducible LaCoO3 species in yLaCoO3/SBA-15.
AB - Mesoporous yLaCoO3/SBA-15 (y = 10-50 wt%) catalysts were prepared and characterized for the combustion of toluene and ethyl acetate (EA). The results show that well-ordered mesoporous LaCoO3/SBA-15 catalysts of high surface areas (338-567 m2/g) could be fabricated by a facile in situ method of hydrothermal treatment. The particles of perovskite-type LaCoO3 were highly dispersed on the walls of pore channels. The ordered mesoporous structure and high dispersion of LaCoO3 are beneficial to the adsorption and activation of toluene and EA molecules. We found that in terms of specific activity, the in situ fabricated 35LaCoO3/SBA-15 and 40LaCoO3/SBA-15 is, respectively, superior to 35LaCoO3/SBA-15_imp (generated by incipient wetness impregnation method) and bulk LaCoO3 (prepared by sol-gel method) in catalytic performance. Based on the above results, we conclude that the excellent performance can be attributed to the good dispersion of highly reducible LaCoO3 species in yLaCoO3/SBA-15.
KW - Catalytic combustion
KW - In situ hydrothermal synthesis
KW - LaCoO/SBA-15 catalysts
KW - Mesoporous material
KW - VOCs
UR - http://www.scopus.com/inward/record.url?scp=57449087000&partnerID=8YFLogxK
U2 - 10.1016/j.apcata.2008.09.037
DO - 10.1016/j.apcata.2008.09.037
M3 - Journal article
AN - SCOPUS:57449087000
SN - 0926-860X
VL - 352
SP - 43
EP - 49
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
IS - 1-2
ER -