Confinement of Ru nanoparticles inside the carbon nanotube: Selectivity controls on methanol decomposition

Title
Confinement of Ru nanoparticles inside the carbon nanotube: Selectivity controls on methanol decomposition
Authors
윤창원박세원박지훈이진희
Keywords
수소저장; Hydrogen Storage; 메탄올; Methanol; 촉매; Catalyst; 촉매 공간 제한; Catalyst Confinement
Issue Date
2020-08
Publisher
The Korean journal of chemical engineering
Citation
VOL 37-1370
Abstract
Carbon nanotubes (CNT) have been widely used as catalyst supports, and the confinement of metal nanoparticles inside the CNT cavity have received much attention. In this study, graphitic carbon nitride were used to introduce nitrogen to CNT and form ruthenium nanoparticles inside the CNT channel. The XPS evidenced that the ruthenium nanoparticles in the CNT cavity are present in more reduced state, and the nitrogen species are in a pyridinic and a pyrrolic form. The prepared catalysts exhibited excellent hydrogen and carbon monoxide selectivity. The hydrogen-to-carbon monoxide ratio was close to the stoichiometric ratio of methanol decomposition. In contrast, the ruthenium nanoparticles outside the CNT showed lower carbon monoxide selectivity at high methanol conversion. The alteration of electrical properties of ruthenium nanoparticles by the CNT channel and N-doping might hamper side reactions, such as water gas shift, methanation, dimethyl ether formation upon methanol decomposition.
URI
http://pubs.kist.re.kr/handle/201004/72445
ISSN
0256-1115
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE