The Influence of Temperature and Pressure Variation on the Reactivity of Multimetallic-Zeolite Hybrid Catalyst for Methanol Synthesis from Carbon Dioxide
The potential of Cu/Zn/Al/Zr - ZSM-5 zeolite hybrid catalyst, prepared by using the newly-improvised technique, namely ultrasonic spray precipitation (USP) is being explored in converting CO2 into methanol. In this study, the effect of reaction temperature (400-560K) and pressure (20-50 bar) towards...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing Ltd,
2020
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| Online Access: | View Fulltext in Publisher View in Scopus |
| Summary: | The potential of Cu/Zn/Al/Zr - ZSM-5 zeolite hybrid catalyst, prepared by using the newly-improvised technique, namely ultrasonic spray precipitation (USP) is being explored in converting CO2 into methanol. In this study, the effect of reaction temperature (400-560K) and pressure (20-50 bar) towards catalytic activity were investigated. This technique had influenced the formation of ultrafine particles (75 nm) with relatively high BET surface area (167 m2 g-1) and both Cu surface area (12.5 m2 g -1) as well as Cu dispersion (8.88 %). TPD profile of H2 and CO2 revealed that this catalyst possess a multiple adsorption states at low (353-383 K) and high (653-858 K) temperature region. Reactivity - wise, an increment of pressure had improved the CO2 conversion and methanol selectivity with maximum value of 35.5 % and 28 %, respectively. In contrast, the exothermic nature of CO2 hydrogenation reaction had retarding both CO2 conversion and methanol selectivity at temperature higher than 523 K with the highest value for both were 36.3 % and 20.7 %, respectively. © Published under licence by IOP Publishing Ltd. |
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| ISBN: | 17578981 (ISSN) |
| DOI: | 10.1088/1757-899X/864/1/012029 |