Zainuri, Rizki Amalia (2013) STUDI PENDAHULUAN KONVERSI SELULOSA MENJADI GULA ALKOHOL MENGGUNAKAN NANOKATALIS NixFe2-xO4 (PRELIMINARY STUDY CELLULOSE CONVERSION TO ALCOHOL SUGAR USED NixFe2-xO4 NANOCATALYST). Fakultas MIPA, Universitas Lampung.
|
File PDF
COVER DALAM.pdf - Published Version Download (10Kb) | Preview |
|
|
File PDF
ABSTRAK.pdf - Published Version Download (21Kb) | Preview |
|
|
File PDF
ABTRACT.pdf - Published Version Download (59Kb) | Preview |
|
|
File PDF
HALAMAN MENGESAHKAN.pdf - Published Version Download (137Kb) | Preview |
|
|
File PDF
HALAMAN MENYETUJUI.pdf - Published Version Download (144Kb) | Preview |
|
|
File PDF
DAFTAR ISI.pdf - Published Version Download (89Kb) | Preview |
|
|
File PDF
BAB I.pdf - Published Version Download (136Kb) | Preview |
|
|
File PDF
BAB II.pdf - Published Version Download (407Kb) | Preview |
|
|
File PDF
BAB III.pdf - Published Version Download (172Kb) | Preview |
|
![[img]](http://digilib.unila.ac.id/style/images/fileicons/text.png) |
File PDF
BAB IV.pdf - Published Version Restricted to Hanya pengguna terdaftar Download (625Kb) |
|
|
File PDF
BAB V.pdf - Published Version Download (140Kb) | Preview |
|
|
File PDF
DAFTAR PUSTAKA.pdf - Published Version Download (138Kb) | Preview |
|
![[img]](http://digilib.unila.ac.id/style/images/fileicons/archive.png) |
Archive
LAMPIRAN.zip - Published Version Download (1970Kb) |
Abstrak (Berisi Bastraknya saja, Judul dan Nama Tidak Boleh di Masukan)
Telah dilakukan preparasi dan karakterisasi katalis NixFe2-xO4 melalui metode sol-gel untuk reaksi konversi selulosa. Preparasi katalis dilakukan melalui langkah-langkah pencampuran, penguapan, dan kalsinasi. Selanjutnya dilakukan karakterisasi terhadap katalis yang telah terbentuk. Proses karakterisasi katalis meliputi analisis penentuan keasaman katalis dengan metode gravimetri dan Fourier Transform Infra Red (FTIR), analisis struktur fasa kristalin katalis dengan metode difraksi sinar-X (XRD) dan analisis morfologi permukaan katalis dengan menggunakan Scanning Electron Microscopy (SEM). Selanjutnya telah dilakukan uji aktivitas katalitik dalam reaksi konversi selulosa dengan variasi suhu 100, 120 dan 140 oC selama 2 jam, dan hasil dianalisis menggunakan Kromatografi Cair Kinerja Tinggi (KCKT). Hasil analisis keasaman katalis dengan metode gravimetri katalis Ni0,8Fe1,2O4 memiliki tingkat keasaman tertinggi yaitu 10,6 mmol piridin/gram katalis. Hasil analisis keasaman katalis NixFe2-xO4 (x= 0,2, 0,5, 0,8 dan 1) dengan metode FTIR menunjukkan bahwa situs asam Lewis lebih dominan dibandingkan dengan situs asam Brønsted-Lowry. Hasil analisis difraksi sinar-X katalis NixFe2-xO4 (x= 0,2, 0,5, 0,8 dan 1) terdiri dari beberapa fasa kristalis yakni fasa NiFe2O4, fasa Fe2O3 dan fasa NiO. Hasil analisis morfologi permukaan katalis NixFe2-xO4 (x= 0,5 dan x= 1) yang dipreparasi dapat dikatakan belum homogen, dimana untuk ukuran katalis (x= 0,5) berukuran ± 330-167 nm, dan katalis (x= 1) berukuran ± 167-125 nm oleh karena itu ukuran partikel katalis bervariasi dan belum memiliki keseragaman di setiap sudut. Hasil analisis KCKT yang dapat mengkonversi selulosa menjadi gula alkohol (sorbitol, manitol, dan xylitol) yaitu katalis NixFe2-xO4 dengan variable x= 0,5 pada suhu 120 C dan variable x= 1 pada suhu 140 C. (Preparation, characterization and catalytic test for cellulose conversion of NixFe2-xO4 catalyst has been studied. Preparation of catalyst is made by some steps including mixing, evaporating, and calcinating. Characterization of the catalyst involved in acid sites using gravimetry and Fourier Transform Infra Red (FTIR) methods, crystalline phases using X-ray diffraction (XRD), and marphology of the catalyst’s surface using Scanning Electron Microscopy (SEM). Furthermore, catalytic tests on cellulose conversion reaction is done by varying both temperature of reaction in a range of 100, 120, and 140 oC and time of reaction in 2 hours and the product is analyzed by High Performance Liquid Chromatography (HPLC). Acid content analysis using gravimetric method indicated that Ni0.8Fe1.2O4 nanocatalyst has the highest acidity of 10.6 mmole pyridine/g catatlyst. FTIR analysis demosntrated from catalyst NixFe2-xO4 (x= 0.2, 0.5, 0.8 and 1) that Lewis acid sites is more dominant than Brønsted – Lowry acid sites in the three nanocatalysts investigated. Then, Diffractogram analysis said that catalyst (x= 0.2, 0.5, 0.8 and 1) consisted of NiFe2O4, Fe2O3 and NiO crystalline phases. Surface marphology analysis showed that NixFe2-xO4 (x= 0.5 and x= 1) nanocatalysts are not completely homogeneous, with particle sizes (x= 0.5) ranging between 330-167 nm and catalyst (x= 1) ranging between 167-125 nm of because proved that the size of particles is varied and a spherical shape. As shown in catalytic test, it can be said that catalyst is active to convert celluose into alcohol sugar (sorbitol, mannitol, and xylitol) as catalyst NixFe2-xO4 (x= 0.5) at temperature of 120 oC and variable x= 1 at temperature of 140 oC.(
| Jenis Karya Akhir: | Skripsi |
|---|---|
| Subyek: | > Q Science (General) > QD Chemistry |
| Program Studi: | FAKULTAS MIPA > Prodi Kimia |
| Pengguna Deposit: | UPT Perpustakaan Unila |
| Date Deposited: | 03 Feb 2014 06:45 |
| Terakhir diubah: | 03 Feb 2014 06:45 |
| URI: | http://digilib.unila.ac.id/id/eprint/906 |
Actions (login required)
 |
Lihat Karya Akhir |
