SINTESIS DAN UJI AKTIVITAS KATALIS Ba1-xSrxCo0,8Fe0,2O3-δ (0,3≤x≤0,5) PADA REAKSI KOPLING OKSIDATIF METANA

SULAIMAN, MUHAMMAD (2017) SINTESIS DAN UJI AKTIVITAS KATALIS Ba1-xSrxCo0,8Fe0,2O3-δ (0,3≤x≤0,5) PADA REAKSI KOPLING OKSIDATIF METANA. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Oksida perovskit Ba1-xSrxCo0,8Fe0,2O3-δ (0,3≤x≤0,5) telah berhasil disintesis menggunakan metode ¬solid-state. Oksida perovskit selanjutnya digunakan sebagai katalis dalam reaksi kopling oksidatif metana pada suhu reaksi 600, 700 dan 900 °C. Difraksi sinar-X (XRD), scanning electron microscopy (SEM) dan energy-dispersive x-ray (EDX) digunakan untuk mengkarakterisasi oksida perovskit sebelum dan sesudah reaksi. Produk hasil reaksi dianalisa menggunakan gas kromatografi (GC). Hasil reaksi menunjukkan bahwa semua oksida perovskit (BSCF 5582, BSCF 6482 dan BSCF 7382) mampu mengkonversi metana pada tiap suhu reaksi dengan nilai konversi meningkat seiring dengan meningkatnya suhu reaksi. Nilai konversi metana tertinggi ditunjukkan oleh BSCF 5582, diikuti oleh BSCF 6482 dan BSCF 7382. Analisa lebih lanjut dari hasil reaksi dengan katalis BSCF 5582 menunjukkan bahwa pembentukan etana terjadi diatas suhu 700 °C ditandai dengan hanya ditemukannya etana pada suhu 900 °C. Gas etana juga ditemukan pada reaksi dengan katalis BSCF 6482 pada suhu 900 °C namun tidak pada reaksi yang dikatalisis BSCF 7382. Hasil karakterisasi terhadap oksida perovskit setelah reaksi menunjukkan bahwa BSCF 5582 memiliki kestabilan struktur dan morfologi terbaik dibandingkan komposisi lainnya dengan tidak ditemukannya fasa lain. =============================================================================================== The perovskite-type oxides Ba1-xSrxCo0.8Fe0.2O3-δ (0.3≤x≤0.5) were prepared by solid state method. The perovskites were used to catalyzed oxidation coupling of methane at temperature 600, 700 and 900 °C. The fresh and the after reaction of the perovskites were characterized by X-ray difraction, scanning electron microscopy and energy-dispersive x-ray. The products of the reaction were analyzed using gas chromatography (GC). The results showed that all of the perovskites (BSCF 5582, BSCF 6482 and BSCF 7382) were able to convert methane and the conversion increase along with the increase of reaction temperature. The highest conversion of methane was obtained with BSCF 5582 and followed by BSCF 6482 as well as BSCF 7382. The analysis also shows that, when using BSCF 5582, ethane was started to formed at above 700 °C and ethane is the only product when the reaction was taken at 900 °C. Catalyt BSCF 6482 produced ethane at 900 oC while BSCF 7382 did not produce any ethane up to 900 °C. X-ray difraction, scanning electron microscopy and energy-dispersive x-ray analysis showed that BSCF 5582 retained its’ structure and morphology after the reaction.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Oksida perovskit, solid-state, katalis, kopling oksidatif metana, etana dan BSCF 5582
Subjects: Q Science > QD Chemistry > QD501 Catalysis. Catalysts.
T Technology > TP Chemical technology
T Technology > TP Chemical technology > TP255 Electrochemistry, Industrial.
Divisions: Faculty of Mathematics and Science > Chemistry > (S1) Undergraduate Theses
Depositing User: - MUHAMMAD SULAIMAN
Date Deposited: 27 Jan 2017 04:21
Last Modified: 27 Jan 2017 04:21
URI: http://repository.its.ac.id/id/eprint/3715

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