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Abstract
Katalis CaO dari abu cangkang kelomang (Paguroidea) telah berhasil dibuat melalui proses kalsinasi pada suhu 900°C selama 4 jam. Variasi waktu kalsinasi 2, 3, dan 4 jam dilakukan untuk mempelajari tentang perubahan fasa sampel. Hasil difraksi sinar-X dari abu cangkang kelomang untuk 2 dan 3 jam menunjukkan bahwa puncak-puncak karakteristik CaCO3 kalsit sedangkan untuk 4 jam berupa kalsium oksida (CaO) dengan puncak karaktersitik pada 2 theta = 32,16°; 37,15°; 53,54°; 64,16° dan 67,5° yang dikonfirmasi sesuai dengan standard CaO (JCPDS N. 82-1690). Hasil SEM menunjukkan informasi topografi dari morfologi partikel katalis untuk waktu 2 dan 3 jam berbentuk agregat yang kurang homogen, jika dibandingkan dengan hasil kalsinasi pada waktu yang lebih lama yaitu 4 jam. Sebaran ukuran parikel untuk 2, 3 dan 4 jam masing-masing memberikan ukuran 0,3 mm-1,5 µm, 34,7 µm – 1,25 µm, dan 11,4 µm – 1 µm. Hasil TGA/DSC menunjukan 43,92 % cangkang kelomang mampu terkonversi menjadi CaO dan CaCO3 pada 900°C.
Kata kunci: Katalis CaO, katalis heterogen, biodisel
Keywords
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References
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References
‘Birla, A., Singh, B., Upadhyay, S. N., & Sharma, Y. C., 2012, Kinetics Studies 1 Of Synthesis Of Biodiesel From Waste Frying Oil Using A Heterogeneous Catalyst Derived From Snail Shell, Bioresource Technology, 106, 95-100’
‘Boro J, Thakur A.J., Deka D., 2011, Solid Oxide Derived From Waste Shells of Turbonilla Striatula as A Renewable Catalystfor Biodiesel Production, Fuel Processing Technology, 92, 2061–2067’
‘Campbell, N. A., Reece, J. B., and Mitchell, L. G., 2000, Filum Mollusca: Anggota Filum Mollusca Memiliki Kaki Berotot, Massa Visceral, Dan Suatu Mantel Biologi, Jakarta ,Erlangga, 224-225’
‘Correia, L. M., Saboya, R. M. A., de Sousa Campelo, N., Cecilia, J. A., Rodríguez-Castellón, E., Cavalcante, C. L., & Vieira, R. S., 2014, Characterization Of Calcium Oxide Catalysts From Natural Sources And Their Application In The Transesterification Of Sunflower Oil, Bioresource technology, 151, 207-213’