CO fuel and γ-LiAlO2 production through alkali carbonate-assisted CO2 splitting by reusing aluminum wastes
| Autor: | Peng Li, Bingji Yan, Yang Motong, Hongwei Guo, Chen Dong |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Materials science Process Chemistry and Technology Oxide chemistry.chemical_element Salt (chemistry) 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Corrosion chemistry.chemical_compound chemistry Chemical engineering Fuel gas Aluminium Chemical Engineering (miscellaneous) Carbonate Thermal stability Molten salt 0210 nano-technology Waste Management and Disposal |
| Zdroj: | Journal of CO2 Utilization. 39:101168 |
| ISSN: | 2212-9820 |
| DOI: | 10.1016/j.jcou.2020.101168 |
| Popis: | This study proposes a process of reusing waste aluminum scraps and greenhouse gas CO2 as chemical feedstocks for producing CO gas fuel and γ-LiAlO2. The non-isothermal kinetics shows that the oxidation of aluminum scraps in CO2 is inhibited once the passive alumina layer being formed at aluminum surface. With the addition of alkali carbonate, the CO generation rate is enhanced depending on the composition of carbonate salt and CO2 concentration. By correlating the thermal stability characteristics of the carbonate with the CO generation features, it is revealed that the as-formed alumina layer is firstly dissolved in the molten salt by means of basic corrosion mechanism and then followed by solid-state reaction with the alkali-metal oxide. By adding Li2CO3, the conversion rate of aluminum scraps can be significantly improved and is completed in 1 h. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect