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- Title
改性核桃壳炭负载的碳化钼催化剂的制备及其 在玉米油加氢脱氧反应中的应用.
- Authors
陈芳; 郭慧君; 宋雨濛; 楼辉
- Abstract
Converting renewable resources such as walnut shells into energy or chemical products is one of the targets for peak carbon dioxide emission and carbon neutrality. Walnut shell char is a solid byproduct of the rapid pyrolysis of walnut shells to create biological oil. Due to its limited porosity and low specific surface area, it is difficult to be used directly as carbon material. FeCl3 was utilized to activate carbon extracted from walnut shells, whereas KOH was used as a reference. Through SEM, TEM, BET, Raman, N2-adsorption, and other series of characterization, it was found that activation improves the degree of graphitization compared to that without activation. The specific surface area increased from 1.6 cm² ·g-1 to 377 cm² ·g-1 and the pore volume increased from 0.004 6 cm³ ·g-1 to 0.074 cm3 ·g-1 when the FeCl3/WSC mass ratio was 10%. The structure of pores was abundant, and the carbon yield (61.2%) was higher than that by using the KOH activation method (35.8%). As a support for the corn oil hydrodeoxidation reaction, carbon derived from walnut shells was treated with FeCl3 to produce the molybdenum carbide catalyst. The corn oil conversion rate and the yield of hydrocarbon were 89.7% and 87.2%, respectively. After 8 cycles, neither the corn oil conversion rate nor the yield of hydrocarbon decreased, and the catalyst remained stable. This method of modifying FeCl3 has the advantages of cost-effectiveness, high efficiency, and environmental friendliness, as well as the potential for extensive use.
- Subjects
CARBON emissions; MOLYBDENUM catalysts; CARBON offsetting; RENEWABLE natural resources; ACTIVATED carbon; CORN oil; MOLYBDENUM enzymes; GRAPHITIZATION
- Publication
Journal of Zhejiang University (Science Edition), 2023, Vol 50, Issue 2, p174
- ISSN
1008-9497
- Publication type
Article
- DOI
10.3785/j.issn.1008-9497.2023.02.007