期刊
JOURNAL OF CLEANER PRODUCTION
卷 341, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2022.130823
关键词
Cu-MOF; Copper oxide; Ultralow loading; Semi-coke; SO2 removal; Flue gas desulfurization
资金
- National Natural Science Foundation of China [51472006, 51672006, 51902009]
- National key research and development plan [2018YFC1901505, 2018YFC1901503]
- Ministry of Land and Resources Public Welfare Industry Research Project [201511062-02]
A highly efficient desulfurizer with excellent SO2 removal performance and stability is developed using sacrificial MOF template and activated semi-coke.
A highly efficient desulfurizer is derived from a sacrificial Cu-based metal-organic framework (MOF) template, which is loaded on low-cost activated semi-cokes. The carbonized composite possesses highly-dispersed copper oxide nanoparticles (Cu2O/CuO) as active sites, which are distributed on MOF-derived carbon octahedra and activated semi-cokes. With an ultralow surface loading of 0.19 at% Cu and a high proportion of Cu+, the optimized sample shows an excellent breakthrough time of 822 min and SO2 adsorption capacity of 233.11 mg/g with a steady SO2 removal efficiency of 100%, which is superior to previously reported coke-base desulfurizers in literature. Meanwhile, the best-performed sample shows stability and reversibility for SO2 removal during 10 desulfurization-regeneration cycles. The excellent SO2 removal performance can be attributed to a well developed porous structure and highly-dispersed copper oxide active sites due to the utilization of both sacrificial MOF template and activated semi-coke.
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