Carbon nanofiber-based copper/zirconia catalyst for hydrogenation of CO2 to methanol

Din, I.U. and Shaharun, M.S. and Naeem, A. and Tasleem, S. and Johan, M.R. (2017) Carbon nanofiber-based copper/zirconia catalyst for hydrogenation of CO2 to methanol. Journal of CO2 Utilization, 21. pp. 145-155. ISSN 2212-9820

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Official URL: https://doi.org/10.1016/j.jcou.2017.07.010

Abstract

This article describes the synthesis of methanol by the direct hydrogenation of CO2 over Cu/ZrO2 catalyst at different ZrO2 concentrations (5, 10, 15, 20 and 25 wt.%) in a three-phase phase reactor. The techniques of N2 adsorption/desorption, x-ray diffraction, x-ray photoelectron spectroscopy, transmission electron microscopy, temperature-programmed desorption by CO2, N2O chemisorption and inductively coupled plasma optical emission spectrometry were employed for catalyst characterization. At a reaction temperature of 180 °C, pressure of 3.0 MP and 0.020 g/mL of the catalyst, the conversion of CO2 and the yield of methanol were 10% and 25 g/kg.h, respectively. Surface area of the metallic copper was increased from 8.1 to 9.5 m2/g with the presence of ZrO2 from 5 to 15 wt.%. The methanol turnover frequency exhibited a linear relationship with ZrO2 concentration. Methanol synthesis rate was progressively increased with increasing fraction of dispersed copper. A comparative study with the literature revealed better activity of this novel catalyst at relatively low reaction conditions.

Item Type: Article
Uncontrolled Keywords: Methanol synthesis; Slurry reactor; Promoter effect; Chemisorption studies
Subjects: Q Science > QD Chemistry
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 31 Jul 2017 07:06
Last Modified: 31 Jul 2017 07:06
URI: http://eprints.um.edu.my/id/eprint/17584

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