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SYNTHESIS AND CHARACTERIZATION OF PALLADIUM CATALYSTS DEPOSITED ON COMPOSITE Δ-AL2O3/NI
Abstract
A composite of alumina and nickel-containing highly porous permeable cellular material (HPCM) was used as a support. The influence of morphological, textural, and acid characteristics of the support on the activity and electronic and geometric properties of palladium particles supported on the composite was studied in the selective hydrogenation of acetylene. It has been established that, in comparison with conventional catalysts supported on δ-Al2O3, the support δ-Al2O3/Ni-HPCM provides a more uniform distribution of the charge state of the active component — palladium particles with surface atoms having higher electron density on the valence orbitals. Such a state of the active component provides high selectivity toward ethylene (78,3 %) in the ethane-ethylene fraction, which is 35,7 % higher than the selectivity obtained with the conventional catalyst (supported on δ-Al2O3).
About the Authors
I. R. Il’yasov
Казанский (Приволжский) федеральный университет
Russian Federation
Russian Federation
M. V. Nazarov
Казанский (Приволжский) федеральный университет
Russian Federation
Russian Federation
A. A. Lamberov
Казанский (Приволжский) федеральный университет
Russian Federation
Russian Federation
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For citations:
Il’yasov I.R., Nazarov M.V., Lamberov A.A. SYNTHESIS AND CHARACTERIZATION OF PALLADIUM CATALYSTS DEPOSITED ON COMPOSITE Δ-AL2O3/NI. Kataliz v promyshlennosti. 2014;(6):50-58. (In Russ.)
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