Catalytic cracking of oleic acid to generate aviation kerosene using platinum–modified ZSM–5 nanosheets

IF 2.8 4区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Haoyu Liu, Jingye Ma, Hong Yuan, Xiang Shi
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引用次数: 0

Abstract

BACKGROUND

A series of Pt@NZSM–5 and Pt/NZSM–5 nanosheets having different Si/Al ratios were prepared via an in situ synthesis and impregnation method, respectively, using C22H45–N+(CH3)2–C6H12–N+(CH3)2–C6H13 (C22–6–6) as the template agent. The oleic acid decarboxylation reaction was carried out using these materials under CO2 atmosphere and the oleic acid cracking mechanism was inferred from the product distribution of the C8-C17 alkanes.

RESULTS

The Pt@NZSM–5 and Pt/NZSM–5 was found to comprise thinner nanosheets and exhibited strong metal–substrate interactions. Pt@NZSM–5 nanosheets with a Si/Al molar ratio of 100 had thicknesses of only 8–9 nm along with a mesopore/micropore capacity ratio of 2.7, an acid content of 11 cm3/g STP and a high Pt0/PtOx ratio.

CONCLUSION

The Pt@NZSM-5 and Pt/NZSM-5 nanosheets had an interconnected hierarchical system and a large number of metal active sites that facilitated the decarboxylation of oleic acid. The Pt@NZSM–5 nanosheets demonstrated excellent catalytic activity during the cracking of oleic acid under a CO2 atmosphere, giving a yield of C8–C17 alkanes as high as 83.8% after 5 h at 320 °C. These Pt@NZSM–5 nanosheets also showed greater stability than the Pt/NZSM–5 specimens. © 2024 Society of Chemical Industry (SCI).

使用铂改性 ZSM-5 纳米片催化裂解油酸生成航空煤油
背景以C22H45-N+(CH3)2-C6H12-N+(CH3)2-C6H13 (C22-6-6)为模板剂,通过原位合成和浸渍法分别制备了一系列具有不同Si/Al比的Pt@NZSM-5和Pt/NZSM-5纳米片。结果发现,Pt@NZSM-5 和 Pt/NZSM-5 纳米片更薄,金属与基底的相互作用更强。硅/铝摩尔比为 100 的 Pt@NZSM-5 纳米片厚度仅为 8-9 nm,中孔/微孔容量比为 2.7,酸含量为 11 cm3/g STP,Pt0/PtOx 比值较高。在二氧化碳气氛下裂解油酸时,Pt@NZSM-5 纳米片表现出卓越的催化活性,在 320 °C 下 5 小时后,C8-C17 烷烃的产率高达 83.8%。与 Pt/NZSM-5 试样相比,这些 Pt@NZSM-5 纳米片还表现出更高的稳定性。© 2024 化学工业学会(SCI)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
7.00
自引率
5.90%
发文量
268
审稿时长
1.7 months
期刊介绍: Journal of Chemical Technology and Biotechnology(JCTB) is an international, inter-disciplinary peer-reviewed journal concerned with the application of scientific discoveries and advancements in chemical and biological technology that aim towards economically and environmentally sustainable industrial processes.
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