TY - JOUR
T1 - On the catalytic properties and structure of small platinum particles supported on graphite
AU - Domínguez, JoséManuel
AU - Yacamán, Miguel José
N1 - Funding Information:
ACKNOWLEDGMENTS One of us (M.J.Y.) thanks the CONACyT-PNCB program for financial support. We are indebtedt o Mr. F. Ruiz for technical help and M. C. J. Zenith for chemisorption measurements.A lso we want to thank Dr. B. Imelik of the Institut de Recherches sur la Catalyse, Lyon, France, for laboratory facilities and Drs. K. Heinemann, C. Yang, and D. Romeu and S. Malo for useful discussions.
PY - 1980/7
Y1 - 1980/7
N2 - The crystallographic structure of small platinum particles was studied and correlated with their catalytic activity. The platinum particles are found to be fcc cubo-octahedra with either a (111) or a (110) face in contact with the basal graphite plane. Particles appear in well-defined azimuthal orientations on the surface which indicates the strong nature of their interaction with the substrate. The catalytic properties are studied using the conversion of neopentane as a test reaction. An interesting correlation between the number of B3 sites on (111) faces of the cubooctahedral particles and the selectivity for neopentane conversion is reported. The findings are in agreement with an early model of isomerization proposed by M. Boudart, A. W. Aldag, L. D. Ptak, and J. E. Benson (J. Catal. 11, 35-45, (1986).
AB - The crystallographic structure of small platinum particles was studied and correlated with their catalytic activity. The platinum particles are found to be fcc cubo-octahedra with either a (111) or a (110) face in contact with the basal graphite plane. Particles appear in well-defined azimuthal orientations on the surface which indicates the strong nature of their interaction with the substrate. The catalytic properties are studied using the conversion of neopentane as a test reaction. An interesting correlation between the number of B3 sites on (111) faces of the cubooctahedral particles and the selectivity for neopentane conversion is reported. The findings are in agreement with an early model of isomerization proposed by M. Boudart, A. W. Aldag, L. D. Ptak, and J. E. Benson (J. Catal. 11, 35-45, (1986).
UR - http://www.scopus.com/inward/record.url?scp=0346213787&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0346213787&partnerID=8YFLogxK
U2 - 10.1016/0021-9517(80)90494-7
DO - 10.1016/0021-9517(80)90494-7
M3 - Article
AN - SCOPUS:0346213787
SN - 0021-9517
VL - 64
SP - 223
EP - 227
JO - Journal of Catalysis
JF - Journal of Catalysis
IS - 1
ER -