Release Time:2019-03-12  Hits:

Indexed by: Journal Article

Date of Publication: 2017-09-01

Journal: CATALYSIS COMMUNICATIONS

Included Journals: EI、SCIE

Volume: 100

Page Number: 219-222

ISSN: 1566-7367

Key Words: Pd; MCM-41; Nanoscale distribution; Selective hydrogenation; Hydrodesulfurization; Hydrodeoxygenation

Abstract: Two different nanoscale Pd particle distributions in MCM-41, i.e. in the mesopores and on the external surface, were obtained by using a siliceous MCM-41 and a silylated MCM-41 (S-MCM-41) as the starting support materials, respectively. The electron density of Pd in Pd/S-MCM-41 was lower than that in Pd/MCM-41. Pd/S-MCM-41 exhibited much better selective hydrogenation performance but a lower hydrogenolysis activity than Pd/MCM-41. These differences are related to the different Pd particle distributions in MCM-41 and S-MCM-41, demonstrating that the performance of noble metal catalysts is tunable by simply controlling the nanoscale metal particle distribution in the pores.