Effect of Temperature, Pressure, and Reaction Time on Hydrogenation of Hexadecanoic Acid to 1-Hexadecanol Using a Ru-Sn(3.0)/C Catalyst
| Autor: | Kamilia Mustikasari, Rodiansono Rodiansono, Nor Ain |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
ethyl hexadecanoate
02 engineering and technology Hexadecane 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis Chemistry chemistry.chemical_compound selective hydrogenation chemistry ru-sn(3.0)/c catalyst Desorption Yield (chemistry) Specific surface area hexadecanoic acid Lewis acids and bases 0210 nano-technology Brønsted–Lowry acid–base theory QD1-999 Bimetallic strip 1-hexadecanol Nuclear chemistry |
| Zdroj: | Jurnal Kimia Sains dan Aplikasi, Vol 22, Iss 4, Pp 112-122 (2019) |
| ISSN: | 2597-9914 1410-8917 |
| DOI: | 10.14710/jksa.22.4.112-122 |
| Popis: | Effect of temperature, initial H 2 pressure, and reaction time on the selective hydrogenation of hexadecanoate acid to 1-hexadecanol over bimetallic ruthenium-tin supported on carbon (denoted as Ru-Sn(3.0)/C; 3.0 is molar ratio Ru/Sn) has been systematically investigated. Ru-Sn(3.0)/C catalyst was synthesized using a simple hydrothermal method at temperature of 150 o C for 24 h followed by reduction with hydrogen at at 400 o C and 500°C for 1.5 h. The XRD patterns of reduced Ru-Sn(3.0)/C showed a series diffraction peaks of bimetallic alloy Ru 3 Sn 7 at 2θ = 30.0°; 35.0°; and 41.3° which are recognized as (310), (321), and (411) reflection planes present. The N 2 -adsorpsion/desorption profiles confirmed that the catalyst structure was microporous and mesoporous sizes with specific surface area ( S BET ) of 207 m 2 /g, pore volume (V p BJH ) 0.1015 cm 3 /g, and pore diameter (d p BJH ) 1,21 nm. NH 3 -TPD profile shows that the desorption temperature of 157.1°C was a weak acidity (Bronsted acid site) with amount of acid sites was 0.117 mmol/g. Meanwhile, the desorption temperature of 660.3°C was a strong acidity (Lewis acid site) with amount of acid sites was 0.826 mmol/g. The highest conversion of hexadecanoic acid (86.24%) was achieved at reaction temperature180°C, initial H 2 pressure of 5.0 MPa, a reaction time of 6 h in ethanol solvent and afforded yield of hexadecane (0.15%), 1-hexadecanol (4.27%), and ethyl hexadecanoate (81.82%). At reaction temperature of 150°C, H 2 of 3.0 MPa, and a reaction time of 18 h, 73.27% of hexadecanoic acid was converted to 1-hexadecanol (0.24%) and ethyl hexadecanoate (73,03%). |
| Databáze: | OpenAIRE |
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