Disintegrative activation of Pd nanoparticles on carbon nanotubes for catalytic phenol hydrogenation. Issue 4 (25th January 2016)

• Record Type: Journal Article
• Authors: Zhang, Liyun; Wang, Bolun; Ding, Yuxiao; Wen, Guodong; Hamid, Sharifah Bee Abd; Su, Dangsheng
• Is Part Of: Catalysis science & technology. Volume 6:Issue 4(2016)
• Page Start: 1003
• Page End: 1006
• Publication Date: 2016-01-25
• Subjects: Catalysis -- Periodicals; 541.395
• DOI: 10.1039/c5cy02165k
• Languages: English
• ISSNs: 2044-4753

Abstract

Abstract : Inactive annealed Pd NPs can be disintegratively re-dispersed and re-activated through a HNO3 vapour treatment for enhanced catalytic phenol hydrogenation. Abstract : The strong dependence of catalytic activity and selectivity on the size of nanoparticles has imposed great value on facile methods for tailoring metal nanoparticles (NPs) with uniform dispersion on a heterogeneous support. Here, a simple and effective method for re-activating sintered Pd NPs decorated on carbon supports is demonstrated using HNO3 vapour at mild temperatures in a closed system, without loss in the Pd content. We further reveal that nitrogen oxide play an important role in the re-dispersion of Pd NPs. In a catalytic phenol hydrogenation reaction, the re-dispersed NPs exhibit superior catalytic activity as compared to sintered Pd NPs supported on CNTs.