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Enhanced metal-support interaction in Ni/Co3O4/TiO2 nanorods toward stable and dynamic hydrogen production from phenol steam reforming

Abbas, Tariq and Tahir, Muhammad and Saidina Amin, Nor Aishah (2019) Enhanced metal-support interaction in Ni/Co3O4/TiO2 nanorods toward stable and dynamic hydrogen production from phenol steam reforming. Industrial and Engineering Chemistry Research, 58 (2). pp. 517-530. ISSN 0888-5885

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Official URL: http://dx.doi.org/10.1021/acs.iecr.8b03542

Abstract

The fabrication of highly stable Ni and Co3O4 nanocube-supported TiO2 nanorods (NRs) catalysts with improved metal-support interaction for steam reforming of phenol (SRP) has been investigated. An enhanced catalytic performance of Ni/Co3O4/TiO2 NRs with H2 -rich gas and hardly formed coke was achieved and rationalized with spectroscopic results and structural assessments. Over 10% Ni/5% Co3O4/TiO2 NRs, SRP and water gas shift reactions dominate, producing mostly H 2 and CO2, yet Ni/TiO2 microparticles promoted CO. With catalyst loading, steam-to-carbon ratio, and gas hourly space velocity, the H 2 yield was improved with higher CO2/CO ratio and low CO yield. A Ni/Co3O4/TiO2 NRs catalyst possesses excellent stability, which prevailed for more than 100 h without obvious deactivation. The high performance was due to a 1D TiO2 NRs/Co3O4 nanocubes heterojunction, good metal dispersion, and higher reducibility, thereby providing a strong interaction of bimetallic active sites. This study reveals that Co3O4 promotes Ni/TiO2 NRs activity and stability toward H2 production and is promising for commercial applications.

Item Type:Article
Uncontrolled Keywords:strong interaction, structural assessments
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:87631
Deposited By: Yanti Mohd Shah
Deposited On:30 Nov 2020 17:06
Last Modified:30 Nov 2020 17:06

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