Journal
ULTRASONICS SONOCHEMISTRY
Volume 42, Issue -, Pages 48-56Publisher
ELSEVIER
DOI: 10.1016/j.ultsonch.2017.11.013
Keywords
Carbon dioxide; Thermal stability; Hydrogenation; Catalysts; Methanol synthesis
Categories
Funding
- Ningbo Key Research Project 'Absorption/catalytic technologies for the simultaneous removal of multi-pollutants from flue gas at power stations' [1012B10042]
- Ningbo Education Bureau
- Ningbo Science and Technology Bureau
- China's MoST
- University of Nottingham
- EPSRC [EP/G037345/1]
- Ningbo Innovation Team Project on 'Indoor air pollution control technology' [2017C510001]
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The thermal characteristics of Cu-based catalysts for CO2 utilization towards the synthesis of methanol were analysed and discussed in this study. The preparation process were varied by adopting ultrasonic irradiation at various impulses for the co-precipitation route and also, by introducing ZnO promoters using the solid-state reaction route. Prepared catalysts were characterised using XRD, TPR, TPD, SEM, BET and TG-DTA-DSC. In addition, the CO2 conversion and CH3OH selectivity of these samples were assessed. Calcination of the catalysts facilitated the interaction of the Cu catalyst with the respective support bolstering the thermal stability of the catalysts. The characterisation analysis clearly reveals that the thermal performance of the catalysts was directly related to the sonication impulse and heating rate. Surface morphology and chemistry was enhanced with the aid of sonication and introduction of promoters. However, the impact of the promoter outweighs that of the sonication process. CO2 conversion and methanol selectivity showed a significant improvement with a 270% increase in methanol yield.
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