Satatariksa, Regnant Yala (2023) Sintesis dan Karakterisasi Katalis Lantanum Nikel Fosfat dengan Templat Heksametilentetramin (LNPH) dan Kemampuan Katalisisnya pada Konversi Selulosa Menjadi 5-Hidroksi-Metilfurfural (5-HMF). Masters thesis, Institut Teknologi Sepuluh Nopember.
![[thumbnail of 01211850012001-Master_Thesis.pdf]](http://repository.its.ac.id/style/images/fileicons/text.png) |
Text
01211850012001-Master_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 September 2025. Download (4MB) | Request a copy |
Abstract
Sintesis katalis lantanum fosfat (LPH) dan lantanum nikel fosfat (LNPH) dengan templat Heksametilentetramin (HMT) dan variasi mol Ni (0,025; 0,050; 0,075; 0,100; dan 0,150) telah berhasil dilakukan melalui metode sol-gel. Padatan hasil sintesis dikarakterisasi dengan X-ray Diffraction (XRD), spektrofotometer Fourier Transform Infrared (FTIR), adsorpsi piridin-FTIR, adsorpsi-desorpsi nitrogen (N2), dan Scanning Electron Microscopy Energy Dispersive X-ray (SEM EDX). Hasil karakterisasi menunjukkan bahwa katalis LPH dan LNPH memiliki struktur kristal heksagonal. Keasaman Lewis dan Brønsted pada katalis meningkat dengan adanya penambahan dopan Ni. Morfologi katalis LPH dan LNPH berbentuk butiran-butiran dengan permukaan kasar. Kemampuan katalis diuji pada konversi selulosa menjadi 5-hidroksi-metilfurfural (5-HMF). Persentase yield 5 HMF tertinggi dengan reaktan selulosa, glukosa, dan fruktosa masing masing dicapai oleh katalis LN1PH (49,12%), LN4PH (91,08%), dan LN2PH (88,30%). Hasil pembentukan produk 5 HMF dipengaruhi oleh karakter keasaman, luas permukaan, volume pori, dan diameter pori dari katalis. Jalur reaksi menunjukkan bahwa beberapa produk 5-HMF terbentuk tanpa melalui jalur fruktosa.
================================================================================================================================
Synthesis of lanthanum phosphate (LPH) and lanthanum nickel phosphate (LNPH) catalysts using Hexamethylenetetramin (HMT) templates and variations in moles of Ni (0.025; 0.050; 0.075; 0.100; and 0.150) has been successfully carried out using the sol-gel method. The synthesized solids were characterized by X-ray Diffraction (XRD), Fourier Transform Infrared (FTIR) spectrophotometer, pyridine adsorption-FTIR, nitrogen adsorption-desorption (N2), and Scanning Electron Microscopy Energy Dispersive X-ray (SEM-EDX). The characterization results show that the LPH and LNPH catalysts have a hexagonal crystal structure. The Lewis and Brønsted acidity of the catalyst increases with the addition of Ni dopant. The morphology of the LPH and LNPH catalysts is granular with a rough surface. The ability of the catalyst was tested on the conversion of cellulose to 5 hydroxy methylfurfural (5-HMF). The highest percentage yield of 5 HMF with cellulose, glucose, and fructose reactants was achieved by each the catalysts LN1PH (49.12%), LN4PH (91.08%), and LN2PH (88.30%). The results of the formation of 5 HMF products are influenced by the character of the acidity, surface area, pore volume, and pore diameter of the catalyst. The reaction pathway shows that some 5-HMF products are formed without going through the fructose pathway.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Katalis heterogen, lantanum nikel fosfat (LaNiPO4), selulosa, Heksametilentetramin (HMT), 5-Hidroksimetilfurfural (5-HMF); Heterogeneous catalyst, lanthanum nickel phosphate (LaNiPO4), cellulose, hexamethylenetetramine (HMT), 5-hydroxymethylfurfural (5-HMF) |
| Subjects: | Q Science Q Science > QD Chemistry Q Science > QD Chemistry > QD501 Catalysis. Catalysts. |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47101-(S2) Master Thesis |
| Depositing User: | Regnant Yala Satatariksa |
| Date Deposited: | 22 Sep 2023 07:19 |
| Last Modified: | 22 Sep 2023 07:19 |
| URI: | http://repository.its.ac.id/id/eprint/104116 |
Actions (login required)
 |
View Item |