Low pressure conversion of CO2 to methanol over Cu/Zn/Al catalysts. The effect of Mg, Ca and Sr as basic promoters
- D. Previtali
- M. Longhi
- F. Galli
- A. Di Michele
- F. Manenti
- M. Signoretto
- F. Menegazzo
- C. Pirola
DOIAbstract
Carbon dioxide concentration level is reaching a non-returning point. Carbon capture technologies are immature and short-term actions are necessary. The conversion of CO2 into methanol is a technical challenge. Commercial copper-zinc-alumina catalysts convert maximum 7% carbon dioxide in syngas at high pressures (5 MPa to 10 MPa) and moderate temperatures (473 K to 573 K) into methanol. However, there are not records on the synthesis of methanol at low pressure (P<2.5MPa) and without a large excess of hydrogen in the feed. Here, we tested three new catalysts prepared by co-precipitation of copper, zinc and aluminum nitrates (CZA), with strontium, magnesium or calcium as basic promoters to enhance CO2 conversion to methanol. We discussed the...
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