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Journals / Konya Mühendislik Bilimleri Dergisi / 2020 / Cilt: 8 Sayı: 1

HIGHLY ACTIVE AND ROBUST PALLADIUM NANOPARTICLES IMMOBILIZED ON BIODEGRADABLE MICROCAPSULES CONTAINING CHITOSAN-GUAR GUM COMPOSITE FOR SYNTHESIS OF BIARYL COMPOUNDS

Biaril Bileşiklerinin Sentezi İçin Kitosan-Guar Sakizi Kompoziti İçeren Biyobozunur Mikrokapsüller Üzerine İmmobilize Edilmiş Oldukça Aktif ve Sağlam Paladyum Nanopartiküller

Talat BARAN
Pages
113–121
Publication Date
2020-03-05
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Moreover, it was found that Pd NPs@CS-GG was a catalyst having long life time because of its reuse at least seven times.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this study, highly stable biodegradable microcapsules, which are composed of chitosan-guar gum composite (CS-GG), were prepared as catalyst support.
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Key Findings & Data:Then, palladium nanoparticles were successfully decorated on the designed support without using any toxic reducing agent (Pd NPs@CS-GG).
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Conclusion & Impact:Moreover, it was found that Pd NPs@CS-GG was a catalyst having long life time because of its reuse at least seven times.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Kitosan · Mikro Kapsül · Katalizör

Abstract

In this study, highly stable biodegradable microcapsules, which are composed of chitosan-guar gum composite (CS-GG), were prepared as catalyst support. Then, palladium nanoparticles were successfully decorated on the designed support without using any toxic reducing agent (Pd NPs@CS-GG). Structural characterizations of CS-GG and Pd NPs@CS-GG were carried out by different analytical techniques and it was detected that the size of palladium nanoparticles changed in the range of 23-48 nm. Then, the catalytic activity of Pd NPs@CS-GG was evaluated in the fabrication of various biaryl compounds under solventless media using microwave heating. Pd NPs@CS-GG showed high catalytic performance in the conversion of various aryl halides to desired biaryl compounds with good reaction yields. Moreover, it was found that Pd NPs@CS-GG was a catalyst having long life time because of its reuse at least seven times.

Özet

Bu çalışmada, kitosan-guar sakızı kompozitinden (CS-GG) oluşan son derece kararlı biyobozunur mikro kapsüller, katalizör desteği olarak hazırlandı. Daha sonra, paladyum partikülleri, herhangi bir toksik indirgeyici madde kullanmadan tasarlanan destek üzerine başarıyla dekore edildi (Pd NP@CS-GG). CS-GG ve Pd NP@CS-GG’lerin yapısal karakterizasyonu farklı analitik tekniklerle yapıldı ve paladyum nanopartiküllerinin boyutunun 23-48 nm aralığında değiştiği tespit edildi. Daha sonra, Pd NP @ CS-GG'nin katalitik aktivitesi, mikrodalga ısıtma kullanılarak çözücüsüz ortam altında çeşitli biaril bileşiklerin üretiminde değerlendirildi. Pd NPs@CS-GG, çeşitli aril halojenürlerin iyi reaksiyon verimleriyle istenilen biaril bileşiklerine dönüştürülmesinde yüksek katalitik performans gösterdi. Ayrıca, Pd NPs@CS-GG'nin, en az yedi kez tekrar kullanımı nedeniyle uzun yaşam süresine sahip bir katalizör olduğu bulundu.

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Cite This Article

BARAN, T. (2020). HIGHLY ACTIVE AND ROBUST PALLADIUM NANOPARTICLES IMMOBILIZED ON BIODEGRADABLE MICROCAPSULES CONTAINING CHITOSAN-GUAR GUM COMPOSITE FOR SYNTHESIS OF BIARYL COMPOUNDS. Konya Mühendislik Bilimleri Dergisi, Cilt: 8 Sayı: 1, 113–121. https://ajindex.com/articles/938598

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