Influence of Granulated Hierarchical Zeolite ZSM-5 Physicochemical Properties on Its Catalytic Performance in Skraup Synthesis of Quinolines

IF 1.3 4区 工程技术 Q3 CHEMISTRY, ORGANIC Petroleum Chemistry Pub Date : 2024-06-06 DOI:10.1134/S0965544124030022
O. S. Travkina, A. S. Artem’eva, A. Kh. Ishkildina, I. N. Pavlova, D. V. Serebrennikov, N. G. Grigor’eva, B. I. Kutepov
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Abstract

This study aimed to investigate the influence of the content of crystalline (10, 30, 60%) and amorphous (90, 70, 40%) aluminosilicates in the starting granules prepared for the synthesis of hierarchical ZSM-5 zeolite on the physicochemical properties, activity, selectivity, and stability of the resulting materials in the Skraup reaction for quinoline synthesis. As the ZSM-5 content in the parent granules was raised from 10 to 60%, increasing trends were observed for the micropore volume (from 0.10 to 0.13 cm3/g) and mesopore volume (from 0.05 to 0.19 cm3/g) in the granules of the resultant hierarchical zeolites H-ZSM-5h(10, 30, 60). At the same time, the macropore volume decreased from 0.34 to 0.29 cm3/g. The H-ZSM-5h(60) sample had the highest concentration of acid sites and exhibited the highest activity and selectivity in the Skraup reaction, as evidenced by 72% yield of quinolines. Moreover, this sample exhibited the highest stability, H-ZSM-5h(60) remained stable for 9 h, whereas the activity of H-ZSM-5h(10) and H-ZSM-5h(30) dropped after 3–4 h.

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粒状分层沸石 ZSM-5 的理化性质对其在斯克劳普合成喹啉类化合物中催化性能的影响
摘要 本研究旨在探讨为合成分层 ZSM-5 沸石而制备的起始颗粒中结晶(10%、30%、60%)和无定形(90%、70%、40%)铝硅酸盐含量对所得材料在喹啉合成 Skraup 反应中的理化性质、活性、选择性和稳定性的影响。当母体颗粒中的 ZSM-5 含量从 10% 提高到 60% 时,所制备的分层沸石 H-ZSM-5h(10、30、60) 颗粒中的微孔体积(从 0.10 到 0.13 cm3/g)和中孔体积(从 0.05 到 0.19 cm3/g)呈上升趋势。同时,大孔体积从 0.34 立方厘米/克下降到 0.29 立方厘米/克。H-ZSM-5h(60) 样品具有最高浓度的酸位点,在 Skraup 反应中表现出最高的活性和选择性,72% 的喹啉产率证明了这一点。此外,该样品还表现出最高的稳定性,H-ZSM-5h(60) 在 9 小时内保持稳定,而 H-ZSM-5h(10) 和 H-ZSM-5h(30) 的活性在 3-4 小时后就会下降。
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来源期刊
Petroleum Chemistry
Petroleum Chemistry 工程技术-工程:化工
CiteScore
2.50
自引率
21.40%
发文量
102
审稿时长
6-12 weeks
期刊介绍: Petroleum Chemistry (Neftekhimiya), founded in 1961, offers original papers on and reviews of theoretical and experimental studies concerned with current problems of petroleum chemistry and processing such as chemical composition of crude oils and natural gas liquids; petroleum refining (cracking, hydrocracking, and catalytic reforming); catalysts for petrochemical processes (hydrogenation, isomerization, oxidation, hydroformylation, etc.); activation and catalytic transformation of hydrocarbons and other components of petroleum, natural gas, and other complex organic mixtures; new petrochemicals including lubricants and additives; environmental problems; and information on scientific meetings relevant to these areas. Petroleum Chemistry publishes articles on these topics from members of the scientific community of the former Soviet Union.
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