Pradesar, Yusuf (2016) Paduan Ternari Basis Pd dengan Kemampuan Reaksi Oksidasi Metanol Tinggi untuk Aplikasi Sel Bahan Bakar Metanol. Masters thesis, Institut Technology Sepuluh Nopember.
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Abstract
Suplai energi merupakan kebutuhan mendesak bagi masyarakat di abad 21
ini karena krisis energi fosil yang tidak terbarukan. Sehingga,, pengadaan energi
baru yang layak, seperti sel bahan bakar, telah menarik perhatian para peneliti. Sel
bahan bakar temperatur rendah sesuai untuk aplikasi kendaraan dan portable karena
densitas energinya yang tinggi, temperatur kerja rendah, dan rendah emisi polusi.
Untuk meningkatkan aktivitas elektrokatalitik katalis mono-Pd, banyak penelitian
yang memodifikasi Pd dengan memadukannya. Dalam penelitian ini, karbon hitam
XC-72 digunkan sebagai material support dan Pd(acac)2 sebagai precursor logam
Pd. Untuk mensintesis elektrokatalis, metode emulsi digunakan sebagai prosedur
eksperimen. Benzil alcohol digunakan sebagai larutan dan campuran oleylamine
dan asam oleic sebagai reduktor.
Dalam penelitian ini, pengaruh parameter eksperimental diteliti. Rasio
antara volume reduktor dengan volume keseluruhan 0.5, 0.3, dan 0.1; dan
temeperature reduksi 110, 130, dan 150 oC dipilih untuk meningkatkan aktivitas
katalitiknya. Faktor lain yang memepengaruhi aktivitas katalitik adalah elemen
paduan. Fe, Co, dan Ni digunakan sebagai elemen paduan. Pengujian XRD, SEM
dan TEM dilakukan untuk mengetahui sifat fisik elektrokatalis. Pengukuran CV
dilakukan untuk mengetahui sifat elektrokimia dalam larutan 1 M KOH dan 1 M
KOH + 1 M methanol. Hasil penelitian menunjukkan bahwa volume rasio 0.1 dan
temperatur reduksi 150 oC merupakan parameter eksperimental terbarik untuk
mensisntesis paduan logam ternary basis Pd. PdFeCo/C merupakan paduan logam
ternary yang memiliki aktivitas katalitik dan stabilitas terhadap methanol terbaik.
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Energy supply is an urgent need for society in this 21st century due the crisis
of fossil fuels. Therefore, development new feasible energy, such as fuel cells, has
drawn research interest. Low temperature fuel cells are suitable for transportation
and portable application because of their high energy density, low operation
temperature and low pollution emissions. To improve the electrocatalytic activity
of mono-Pd catalyst, most of the work has addressed to the modification of Pd
environment by alloying with other elements. In this study, XC72 was used as
carbon support and Pd(acac)2 as Pd metal precursor. For preparing the
electrocalysts, emulsion method was used as experimental procedure. Benzyl
alcohol was used as solution, and oleylamine and oleic acid was used as reducing
agent and surfactant.
In this study, effect of experimental parameter was studied. Volume ration
between reducing agent and total volume 0.5, 0.3, 0.1; and reduction temperature
110, 130, and 150 oC was considered for improving the catalytic activity. Another
factor would affect the catalytic activity was alloying elements. There were Fe, Co,
and Ni that used as alloying elements. XRD, SEM, and TEM were conducted to
study the physical properties of electrocatalysts. CV measurement was conducted
to study the electrochemical properties in 1 M KOH and 1 M KOH + 1 M methanol.
The results showed that the volume ratio 0.1 and reduction temperature 150 oC was
the best experimental parameter for synthesized Pd-based ternary alloy. PdFeCo/C
was ternary alloy that had the best catalytic activity and good stability toward MOR.
| Item Type: | Thesis (Masters) |
|---|---|
| Additional Information: | RTMt 669.94 Pra p-1 |
| Uncontrolled Keywords: | DMFC, Pd-based, ternary alloy |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2931 Fuel cells |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 27101-(S2) Master Thesis |
| Depositing User: | Mr. Tondo Indra Nyata |
| Date Deposited: | 17 Feb 2020 06:52 |
| Last Modified: | 17 Feb 2020 06:52 |
| URI: | http://repository.its.ac.id/id/eprint/74986 |
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