TY - JOUR
T1 - Pb-substituted hydroxyapatite catalysts prepared by coprecipitation method for oxidative coupling of methane
AU - Lee, Kwan Young
AU - Han, Yoon Chull
AU - Suh, Dong Jin
AU - Park, Tae Jin
N1 - Funding Information:
This study has been supported by the Research-Aid Fund of the Ministry of Science and Technology of Korea.
PY - 1998
Y1 - 1998
N2 - Pb-substituted hydroxyapatites (Ca(10-x)Pbx(PO4)6(OH)2, x=0-10) prepared by coprecipitation method were studied as catalysts for oxidative coupling of methane using gas flow reactor in the temperature range of 675 to 800°C. They showed much higher activity for the production of C2 compounds than those of unsubstituted hydroxyapatites. Especially, Ca9.5Pb0.5(PO4)6(OH)2 showed the highest activity among them, which revealed maximum C2 yield of about 22%. As compared to the catalysts prepared by ion-exchange method, these catalysts had much higher activity and better thermal stability. Such high activity and stability of the catalysts could be confirmed by XPS, XRD, ICP, etc. to be resulted from the optimum amount of Pb substitution, uniformity of structure, and the maintenance of their own structure during the reaction.
AB - Pb-substituted hydroxyapatites (Ca(10-x)Pbx(PO4)6(OH)2, x=0-10) prepared by coprecipitation method were studied as catalysts for oxidative coupling of methane using gas flow reactor in the temperature range of 675 to 800°C. They showed much higher activity for the production of C2 compounds than those of unsubstituted hydroxyapatites. Especially, Ca9.5Pb0.5(PO4)6(OH)2 showed the highest activity among them, which revealed maximum C2 yield of about 22%. As compared to the catalysts prepared by ion-exchange method, these catalysts had much higher activity and better thermal stability. Such high activity and stability of the catalysts could be confirmed by XPS, XRD, ICP, etc. to be resulted from the optimum amount of Pb substitution, uniformity of structure, and the maintenance of their own structure during the reaction.
UR - http://www.scopus.com/inward/record.url?scp=0343041508&partnerID=8YFLogxK
U2 - 10.1016/s0167-2991(98)80462-x
DO - 10.1016/s0167-2991(98)80462-x
M3 - Article
AN - SCOPUS:0343041508
SN - 0167-2991
VL - 119
SP - 385
EP - 390
JO - Studies in Surface Science and Catalysis
JF - Studies in Surface Science and Catalysis
ER -