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Outline
The successful development and application of CO2 hydrogenation to light olefins can not only alleviate the environmental issues caused by the massive emission of greenhouse gases, but also open up a new way for the preparation of important high-value chemicals. Due to the chemical inertness of CO2 molecules, selectively activation and conversion of CO2 into target light olefins remain highly challenging. In this work, we review the current research progress in the hydrogenation of CO2 to light olefins, with a focus on analyzing the advantages and disadvantages of the Fischer-Tropsch synthesis (CO2-FTO) route and the methanol intermediate (CO2-MTO) route. The key factors, such as the type of additives, the structure of the carrier and the concentration of surface defect sites, affecting the activation of CO2 and the formation of light olefins are discussed in detail. Meanwhile, essential role of the pore structure and acidity of zeolites in conversion of methanol intermediates to olefins is analyzed.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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