| Autor: |
Sriatun, Sriatun, Qori'ah, Nanda A. N., Suseno, Ahmad, Sriyanti, Sriyanti, Darmawan, Adi |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2024, Vol. 3165 Issue 1, p1-11, 11p |
| Abstrakt: |
The synthesis of silica-alumina catalysts can be carried out using sodium silicate and Ludox precursors as silica sources. Generally, the synthesis of silica-alumina material is carried out through hydrothermal heating. This method takes a long time, so microwave heating is chosen. The research aimed to obtain silica-alumina catalyst from different silica sources through microwave heating and use as a catalyst for the hydrocracking reaction of palm oil. Silica-alumina catalyst was synthesized by mixing sodium aluminate and silicate sources (sodium silicate and Ludox) with a molar composition of 3 SiO2: 0.1 Na2O.Al2O3: 0.3 TPABr: 175H2O. The mixtures were heated in a microwave with variations in heating time. After the TPABr removal process, the product was characterized by FTIR, XRD, and GSA instruments. The results show that the product has an amorphous phase. The FTIR spectra of the product showed absorption at wave numbers ∼473 cm−1, ∼796 cm−1, and 1080-1116 cm−1, which indicated the presence of T-O bending (T= Si/Al), Si-O-Al stretching, and Si-O-Si/Al-O-Al stretching vibrations. The silica-alumina catalyst from the Ludox-2 precursor has the highest total acidity value of 13.62 mmol/g, a surface area of 119.91 m2/g, a total pore volume of 1.38 cm3/g, an average pore diameter of 22.95 nm. The value was higher than the silica-alumina catalyst from the sodium silicate-2 precursor. The catalytic test also showed that the silica-alumina catalyst from the Ludox-2 precursor had better catalytic activity. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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