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All Journal Jurnal Matematika & Sains The Journal of Pure and Applied Chemistry Research Journal of Mathematical and Fundamental Sciences Indonesian Journal of Biotechnology CHEESA: Chemical Engineering Research Articles Indonesian Journal of Physics (IJP) Bulletin of Chemical Reaction Engineering & Catalysis Journal of Engineering and Technological Sciences
Veinardi Suendo
Departemen Kimia, Institut Teknologi Bandung
Aerospace Engineering Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Immunology & microbiology Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics

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Pengaruh Variasi Dopan Asam Terhadap Kinerja Baterai Sekunder Polianilina|Zn Akbar, Said Ali; Suendo, Veinardi; Rochliadi, Achmad
CHEESA: Chemical Engineering Research Articles Vol. 3 No. 1 (2020)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (498.282 KB) | DOI: 10.25273/cheesa.v3i1.6702

Abstract

Studi tentang baterai sekunder polianilina(PAni)|Zn telah banyak dikembangkan, tetapi sejauh ini masih belum ada penjelasan mengenai pengaruh asam terhadap kinerja baterai tersebut. PAni disitensis menggunakan metoda elektrodeposisi dengan tegangan 0,7 V selama 30 menit. PAni hasil sintesis dikarakterisasi menggunakan Voltammetri dan Spektroskopi Inframerah. Baterai PAni|Zn didesain dalam bentuk sandwich, kemudian pengukuran kinerja digunakan impedansi serta pengisian-pengosongan. Baterai dengan elektroda PAni-Cl dan PAni-Br mempunyai kinerja yang lebih baik dengan specific capacity saat ke-60 yaitu 55,4 dan 37,4 mAh g-1. Pengukuran impedansi pada baterai dengan elektroda PAni-Cl, PAni-Br, dan PAni HClO4, menunjukan resistance solution (Rs) secara berurutan yaitu 1,38; 2,56; dan 3,03 W dan resistance charge transfer (Rct) 2,24; 2,97; dan 7,71 W. Oleh sebab itu, baterai PAni|Zn dengan dopan HCl menunjukkan kinerja terbaik dibanding dengan asam yang lain.
Polyoxometalates as Catalysts for Biomass Conversion: Properties, Applications, and Regenerability Winoto, Haryo P.; Anggaswara, Rezky O.; Wahyudi, Dian H.; Mukti, Rino R.; Suendo, Veinardi; Ismunandar, Ismunandar
Journal of Engineering and Technological Sciences Vol. 58 No. 3 (2026): Vol. 58 No. 3(2026): June (In Progress)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2026.58.3.2

Abstract

Polyoxometalates (POMs) have emerged as exceptionally versatile catalysts for green chemical reactions, demonstrating significant potential in the sustainable valorization of biomass. Their tunable Brønsted/Lewis acidity and redox properties enable a broad range of chemical transformations, offering remarkable flexibility in process design. This mini review provides a summary of recent advances in the thermocatalytic conversion of biomass using POMs, addressing their utilization as both homogeneous and heterogeneous catalysts. Key reaction pathways, including solvolysis, oxidation, esterification, and condensation, are highlighted as fundamental processes in biomass valorization. A central focus is placed on the crucial challenge of catalyst regenerability and stability, examining strategies to ensure the long-term viability and economic feasibility of these systems while facing the apparent low-temperature stability challenge of POMs. Finally, this review synthesizes current regeneration methods and presents a forward-looking perspective on the future challenges and opportunities in the field of biomass conversion catalyzed by polyoxometalates.
Co-Authors Aksarani ‘Sa Pratiwi Anggaswara, Rezky O. Annisa A Putri Anton Prasetyo Arie Hardian Ashari Budi Nugraha Ashari Budi Nugraha Auliya Nur Amalina Benu, Didi Prasetyo Cynthia L. Radiman Damar Rastri Adhika Erna Febriyanti Euis Sustini Fenny M Dwivany Fry Voni Steky Irma Mulyani Ismunandar Listiana Oktavia Muhammad Nur Tajuddin Muhammad Reza Muhammad Reza Muhammad Reza Novitrianc Novitrianc Nur Aini Phutri Milana Rino R. Mukti Rino Rakhmata Mukti Risa Rahmawati Sunarya Rizkita R Esyanti Rochliadi, Achmad Said Ali Akbar Sheley Marela Sparisoma Viridi Sunarya, Risa Rahmawati Viny Veronika Tanuwijaya Viny Veronika Tanuwijaya Wahyudi, Dian H. Winoto, Haryo P. Yuliany Yuliany