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Revolutionizing green catalysis: a novel amla seed derived biochar modified g-CN·SOH catalyst for sustainable and versatile synthesis of bis-indoles.
Nanoscale Adv
January 2025
Synthetic Organic Chemistry Laboratory, Department of Chemistry, MLSU Udaipur-313001 Rajasthan India
Catalysis plays a vital role in green chemistry by improving process efficiency, reducing waste, and minimizing environmental impact. A biochar-modified g-CN·SOH (BCNSA) catalyst was developed using biochar derived from amla seed powder and CNSA. CNSA was synthesized the reaction of g-CN with chlorosulfonic acid.
View Article and Find Full Text PDFAsymmetric Membranes Obtained from Sulfonated HIPS Waste with Potential Application in Wastewater Treatment.
Membranes (Basel)
November 2024
CONAHCYT-Centro de Investigación Científica de Yucatán, A.C., Calle 43 No. 130, Chuburná de Hidalgo, Mérida 97200, Yucatán, Mexico.
The recovery and reuse of high-impact polystyrene (HIPS) into high-value products is crucial for reducing environmental thermoplastics waste and promoting sustainable materials for various applications. In this study, asymmetric membranes obtained from sulfonated HIPS waste were used for salt and dye removals. The incorporation of sulfonic acid (-SOH) groups into HIPS waste by direct chemical sulfonation with chlorosulfonic acid (CSA), at two different concentrations, was investigated to impart antifouling properties in membranes for water treatment.
View Article and Find Full Text PDFVersatile and Fast Electrochemical Activation Method for Carbon Nanotube Fibers with Diverse Active Materials.
Small Methods
December 2024
Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong ro, Bondong-eup, Wanju-gun, Jeonbuk, 55324, South Korea.
In this study, the challenge of non-electrochemical activity in carbon nanotube fibers (CNTFs) is addressed by developing a modified chlorosulfonic acid (CSA) densification process specifically developed for directly spun CNTFs. This post-treatment method, well-known for enhancing the physical properties of CNTFs, utilizes the double diffusion phenomenon to efficiently integrate a diverse range of active materials, from conductive polymers like polyaniline (PANI) to metal oxides like nickel oxide (NiO), into the fibers. This universal and cost-effective approach not only simplifies the integration process but also significantly boosts both the electrochemical and physical properties of the fibers.
View Article and Find Full Text PDFSulfonic Acid-Functionalized Solid Polymer Catalyst from Crude Cashew Nut Shell Liquid: Synthesis of Tetra(indolyl)methanes and Bis(indolyl)methanes from Xylochemicals.
ACS Omega
December 2024
School of Chemical Sciences, Goa University, Goa 403 206, India.
Xylochemistry presents a sustainable solution to the depletion of petroleum resources, contributing to the success of the circulatory economy. The development of reusable carbonaceous materials as heterogeneous acid catalysts has garnered significant attention in both research community and industry. Catalysis research has an intrinsic connection with low-cost synthetic routes, sustainable raw materials, and chemical and thermal stability.
View Article and Find Full Text PDFHighly efficient synthesis of pyrimidine-5-carbonitrile derivatives over a robust biowaste bone char-Bronsted solid acid catalyst.
Sci Rep
December 2024
Department of Organic Chemistry, Faculty of Chemistry and Petroleum Sciences, Bu-Ali Sina University, Hamedan, 6517838683, Iran.
In this study, the conversion of bones (waste of food industry) into bone char is described. The presence of calcium phosphate and graphitic carbon gives bone char unique properties, with different possible uses. The catalytic behavior of bone char modified with chlorosulfonic acid is tested as reusable and eco-friendly solid acid biocatalyst in synthesis of pyrimidine-5-carbonitrile derivatives.
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