TY - JOUR
T1 - Y2O3-promoted NiO/SBA-15 catalysts highly active for CO2/CH4 reforming
AU - Li, J. F.
AU - Xia, C.
AU - Au, C. T.
AU - Liu, B. S.
N1 - Funding Information:
We are grateful to the joint financial support of National Natural Science Foundation of China and BAOSTEEL Group Corporation (Grant No. 50876122 ).
PY - 2014/7/15
Y1 - 2014/7/15
N2 - A series of Y2O3-promoted NiO/SBA-15 (9 wt% Ni) catalysts (Ni:Y weight ratio = 9:0, 3:1, 3:2, 1:1) were prepared using a sol-gel method. The fresh as well as the catalysts used in CO2 reforming of methane were characterized using N2-physisorption, XRD, FT-IR, XPS, UV, HRTEM, H2-TPR, O2-TPD and TG techniques. The results indicate that upon Y2O3 promotion, the Ni nanoparticles are highly dispersed on the mesoporous walls of SBA-15 via strong interaction between metal ions and the HO-Si-groups of SBA-15. The catalytic performance of the catalysts were evaluated at 700 °C during CH4/CO2 reforming at a gas hourly space velocity of 24 L gcat-1 h-1(at 25 °C and 1 atm) and CH4/CO 2molar ratio of 1. The presence of Y2O3 in NiO/SBA-15 results in enhancement of initial catalytic activity. It was observed that the 9 wt% Y-NiO/SBA-15 catalyst performs the best, exhibiting excellent catalytic activity, superior stability and low carbon deposition in a time on stream of 50 h.
AB - A series of Y2O3-promoted NiO/SBA-15 (9 wt% Ni) catalysts (Ni:Y weight ratio = 9:0, 3:1, 3:2, 1:1) were prepared using a sol-gel method. The fresh as well as the catalysts used in CO2 reforming of methane were characterized using N2-physisorption, XRD, FT-IR, XPS, UV, HRTEM, H2-TPR, O2-TPD and TG techniques. The results indicate that upon Y2O3 promotion, the Ni nanoparticles are highly dispersed on the mesoporous walls of SBA-15 via strong interaction between metal ions and the HO-Si-groups of SBA-15. The catalytic performance of the catalysts were evaluated at 700 °C during CH4/CO2 reforming at a gas hourly space velocity of 24 L gcat-1 h-1(at 25 °C and 1 atm) and CH4/CO 2molar ratio of 1. The presence of Y2O3 in NiO/SBA-15 results in enhancement of initial catalytic activity. It was observed that the 9 wt% Y-NiO/SBA-15 catalyst performs the best, exhibiting excellent catalytic activity, superior stability and low carbon deposition in a time on stream of 50 h.
KW - High stability
KW - Oxygen vacancies
KW - Y-NiO/SBA-15 catalyst
UR - http://www.scopus.com/inward/record.url?scp=84903307144&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2014.05.021
DO - 10.1016/j.ijhydene.2014.05.021
M3 - Journal article
AN - SCOPUS:84903307144
SN - 0360-3199
VL - 39
SP - 10927
EP - 10940
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 21
ER -