Investigation of the catalytic performance and characterisation of an excellent heterogeneous catalyst Tetrasodium Pyrophosphate Decahydrate (Na4P2O7,10 H2O) in ecological Knoevenagel condensation

IF 3.4 4区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
Driss El Mekkaoui , Sarra Sibous , Youssef lemallam , Fatima El hajri , Haddou Anahmadi , Houria Elaouani , Zakaria Benzekri , Abdelaziz Souizi , Said Boukhris
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Abstract

The research presented herein offers a straightforward, cost-effective, and environmentally benign approach to enhancing the catalytic performance of tetrasodium pyrophosphate decahydrate (Na4P2O7.10H2O). Spectroscopic analysis techniques, including Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS), were employed to characterise Tetrasodium Pyrophosphate Decahydrate (Na4P2O7.10H2O). The catalytic performance of the heterogeneous catalyst tetrasodium pyrophosphate decahydrate (Na4P2O7.10H2O) will now be investigated in Knoevenagel condensation reactions with various aromatic aldehydes and active methylene compounds under environmentally friendly conditions. The alkene derivatives were obtained in good to excellent yields (64–97 %) over 10–50 min in the presence of 8 mg of tetrasodium pyrophosphate decahydrate (Na4P2O7.10H2O) at room temperature in 2 mL of ethanol as the eco-friendly solvent. Moreover, the alkene by-products are accurately identified and confirmed through FT-IR and NMR spectroscopy. These methods offer several advantages, including gentle reaction conditions, low reaction times, ease of implementation, and the generation of high yields. Moreover, based on tetrasodium pyrophosphate decahydrate (Na4P2O7.10H2O), the novel catalytic support can be reused multiple times without any discernible reduction in catalytic activity.

Abstract Image

十水焦磷酸四钠(Na4P2O7, 10h2o)在生态Knoevenagel缩合中的催化性能及表征
本研究为提高十水焦磷酸四钠(Na4P2O7.10H2O)的催化性能提供了一种简单、经济、环保的方法。采用傅里叶变换红外光谱(FT-IR)、x射线衍射(XRD)、扫描电镜(SEM)和能谱(EDS)等光谱分析技术对十水焦磷酸四钠(Na4P2O7.10H2O)进行了表征。在环境友好的条件下,研究了非均相催化剂十水焦磷酸四钠(Na4P2O7.10H2O)与各种芳香醛和活性亚甲基化合物的Knoevenagel缩合反应的催化性能。在室温下,以2ml乙醇为环保溶剂,以8mg十水焦磷酸四钠(Na4P2O7.10H2O)为溶剂,在10-50 min的反应时间内得到了收率为64 - 97%的烯烃衍生物。通过红外光谱和核磁共振光谱对烯烃副产物进行了准确的鉴定和确认。这些方法具有几个优点,包括温和的反应条件、较短的反应时间、易于实现和产生高收率。此外,基于十水焦磷酸四钠(Na4P2O7.10H2O)的新型催化载体可以多次重复使用,而催化活性没有明显降低。
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来源期刊
CiteScore
3.50
自引率
7.70%
发文量
492
审稿时长
3-8 weeks
期刊介绍: The Journal of the Indian Chemical Society publishes original, fundamental, theorical, experimental research work of highest quality in all areas of chemistry, biochemistry, medicinal chemistry, electrochemistry, agrochemistry, chemical engineering and technology, food chemistry, environmental chemistry, etc.
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