Volume-16 ~ Issue-12 ~ December 2023

Abstract: Bleaching earth clay catalyzed multicomponent reaction of Heterocyclic aldehyde, 2-cyanoacetohydrazide and substituted Anilines, In PEG-400 is carried out. This method has been applied for the synthesis of quinoline-3-carbonitrile with good to excellet yield. In this study a comparison is made on triethylamine, piperidine, morpholine with Bleaching earth clay and with no catalyst. The studies revealed that bleaching earth clay and PEG-400 are more effective than other catalyst and solvents. It increasing the yield of product with less time consumption. All the synthesized compounds were characterized for their spectral analysis.

Keyword: Bleaching earth clay (BEC), PEG-400, Heterocyclic aldehyde, recyclability

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Abstract: Solketal is a value added product obtained by acetalization of glycerol, a by-product obtained in the bio-diesel production. Simple zeolites viz., Beta, Y, ZSM5 and Ferrierite were acidified to achieve good yields of solketal under mild reaction conditions in this study. All the acidic zeolites were characterized by XRD, SEM-EDAX, BET-SA, FT-IR, Raman, XPS and Py-IR to understand their physical, morphological and chemical nature. Among the four zeolites studied in comparison at optimized reaction conditions, HZSM5 showed better activity. The order of activity of the catalysts was in line with their acidity. All the zeolites studied showed a stable activity even after 4 cycles of reaction run.

Keyword: Glycerol, Solketal, Zeolites, Acetalization, Acidity

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Abstract: The mineral element content of fifty five (55) samples of geophagic materials from the Northern and central senatorial districts of Cross River State, Nigeria, were determined by atomic absorption spectrophotometry. It was also set to determined if there is any significant difference in the presence of the mineral element in the same geophagic material samples. Independent sample t-test was used to test the hypothesis at 0.05 level of significance. The study revealed that there is statistically significant differences among most mineral elements determined in the geophagic materials obtained in both the Northern and Central Senatorial districts. The result of the mineral elements.....

Key words: Geophagic material, senatorial district, mineral elements, consumption

[1]. Abdul, Rasheed, M., Arhim, Emmanuel And Arihin Jnr, Atta A. (2021). Mineralogy And Geochemistry Of Geophagic Materials At Mfensi-Adankwame In The Ashanti Region Of Ghana And Possible Health Implications, Geology, Ecology And Landscapes Doi:10.1080/24739508.2021.1952775.
[2]. Abrahams, Peter W., Davies, Theo C., Solomon, Abive O., Trow, Amanda J. And Wraggtoanna (2013). Human Geophagia, Calabash Chalk And Undongo: Mineral Element Nutritional Implications 8(1):E53304 Doi:10.1371/Journal.Pane.0053304.
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Abstract: A photocatalyst is a substance that facilitates chemical reactions when exposed to light, typically ultraviolet (UV) or visible light. Photocatalysts are essential components in various applications, including environmental remediation, water purification, hydrogen production, and solar energy conversion. Metal oxides have proven to be invaluable materials in the realm of economic and environmental applications. Hence, understanding their behavior in photocatalysis is crucial for harnessing their potential in addressing pressing global environmental challenges. The use.......

Keywords: Photocatalysis, Photodegradation, nanocomposites, Environmental Remediation

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