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Low Temperature Catalytic-Transfer Hydrogenation of Candlenut Oil

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@article{IJASEIT2216,
   author = {Fitri Hadiah and Tatang Hernas Soerawidjaja and - Subagjo and Tirto Prakoso},
   title = {Low Temperature Catalytic-Transfer Hydrogenation of Candlenut Oil},
   journal = {International Journal on Advanced Science, Engineering and Information Technology},
   volume = {7},
   number = {3},
   year = {2017},
   pages = {843--849},
   keywords = {Catalytic-transfer hydrogenation; iodine value; Ag-Ni/silica; candlenut oil; polyunsaturated fatty acid},
   abstract = {Fatty acids containing more than one double bond (polyunsaturated fatty acids) indicated by high iodine value (more than 120 g I2/100 g oil) are prone either to oxidative degradation or thermal degradation leading to the appearance of undesirable compounds or to thermal oligo-/polymerization causing gum formation. Therefore, polyunsaturated bonds in the fatty acid chains should be hydrogenated into monounsaturated ones. The conventional method using hydrogen (direct hydrogenation) at relatively high temperature and pressure with the aid of nickel as catalyst, which prone to explosion due to the presence of free gaseous hydrogen at high temperature and pressure. Catalytic transfer-hydrogenation (CTH) therefore is proposed as a promising alternative method, enabling CTH at room condition without the presence of free hydrogen. This research is focused to explore effects of temperature and reaction time to iodine value reduction on CTH of candlenut oil, including kinetics of its methyl ester. The hydrogenation utilizes Ag-Ni/silica 150 Å as catalyst and potassium formate (6M) as hydrogen donor. Three reaction temperatures were selected (40oC, 60oC and 78oC), where each reactions were performed for 4, 8, 12 and 16 hours. Hydrogenation was performed in batch reactor using isopropyl alcohol as solvent. Results showed that iodine values decreased with the increase of temperature and longer reaction time. The iodine value was still decreasing at 16 hours reaction time, indicating the possibility of longer reaction time. However, at 16 hours time, the iodine value yield has been within biodiesel standard range (Indonesian National Standard). The hydrogenation was first order reaction towards methyl ester double bonds concentration. Ko and E for candlenut methyl ester were 163.15/hour and 25.26 kJ/mol.},
   issn = {2088-5334},
   publisher = {INSIGHT - Indonesian Society for Knowledge and Human Development},
   url = {http://ijaseit.insightsociety.org/index.php?option=com_content&view=article&id=9&Itemid=1&article_id=2216},
   doi = {10.18517/ijaseit.7.3.2216}
}

EndNote

%A Hadiah, Fitri
%A Soerawidjaja, Tatang Hernas
%A Subagjo, -
%A Prakoso, Tirto
%D 2017
%T Low Temperature Catalytic-Transfer Hydrogenation of Candlenut Oil
%B 2017
%9 Catalytic-transfer hydrogenation; iodine value; Ag-Ni/silica; candlenut oil; polyunsaturated fatty acid
%! Low Temperature Catalytic-Transfer Hydrogenation of Candlenut Oil
%K Catalytic-transfer hydrogenation; iodine value; Ag-Ni/silica; candlenut oil; polyunsaturated fatty acid
%X Fatty acids containing more than one double bond (polyunsaturated fatty acids) indicated by high iodine value (more than 120 g I2/100 g oil) are prone either to oxidative degradation or thermal degradation leading to the appearance of undesirable compounds or to thermal oligo-/polymerization causing gum formation. Therefore, polyunsaturated bonds in the fatty acid chains should be hydrogenated into monounsaturated ones. The conventional method using hydrogen (direct hydrogenation) at relatively high temperature and pressure with the aid of nickel as catalyst, which prone to explosion due to the presence of free gaseous hydrogen at high temperature and pressure. Catalytic transfer-hydrogenation (CTH) therefore is proposed as a promising alternative method, enabling CTH at room condition without the presence of free hydrogen. This research is focused to explore effects of temperature and reaction time to iodine value reduction on CTH of candlenut oil, including kinetics of its methyl ester. The hydrogenation utilizes Ag-Ni/silica 150 Å as catalyst and potassium formate (6M) as hydrogen donor. Three reaction temperatures were selected (40oC, 60oC and 78oC), where each reactions were performed for 4, 8, 12 and 16 hours. Hydrogenation was performed in batch reactor using isopropyl alcohol as solvent. Results showed that iodine values decreased with the increase of temperature and longer reaction time. The iodine value was still decreasing at 16 hours reaction time, indicating the possibility of longer reaction time. However, at 16 hours time, the iodine value yield has been within biodiesel standard range (Indonesian National Standard). The hydrogenation was first order reaction towards methyl ester double bonds concentration. Ko and E for candlenut methyl ester were 163.15/hour and 25.26 kJ/mol.
%U http://ijaseit.insightsociety.org/index.php?option=com_content&view=article&id=9&Itemid=1&article_id=2216
%R doi:10.18517/ijaseit.7.3.2216
%J International Journal on Advanced Science, Engineering and Information Technology
%V 7
%N 3
%@ 2088-5334

IEEE

Fitri Hadiah,Tatang Hernas Soerawidjaja,- Subagjo and Tirto Prakoso,"Low Temperature Catalytic-Transfer Hydrogenation of Candlenut Oil," International Journal on Advanced Science, Engineering and Information Technology, vol. 7, no. 3, pp. 843-849, 2017. [Online]. Available: http://dx.doi.org/10.18517/ijaseit.7.3.2216.

RefMan/ProCite (RIS)

TY  - JOUR
AU  - Hadiah, Fitri
AU  - Soerawidjaja, Tatang Hernas
AU  - Subagjo, -
AU  - Prakoso, Tirto
PY  - 2017
TI  - Low Temperature Catalytic-Transfer Hydrogenation of Candlenut Oil
JF  - International Journal on Advanced Science, Engineering and Information Technology; Vol. 7 (2017) No. 3
Y2  - 2017
SP  - 843
EP  - 849
SN  - 2088-5334
PB  - INSIGHT - Indonesian Society for Knowledge and Human Development
KW  - Catalytic-transfer hydrogenation; iodine value; Ag-Ni/silica; candlenut oil; polyunsaturated fatty acid
N2  - Fatty acids containing more than one double bond (polyunsaturated fatty acids) indicated by high iodine value (more than 120 g I2/100 g oil) are prone either to oxidative degradation or thermal degradation leading to the appearance of undesirable compounds or to thermal oligo-/polymerization causing gum formation. Therefore, polyunsaturated bonds in the fatty acid chains should be hydrogenated into monounsaturated ones. The conventional method using hydrogen (direct hydrogenation) at relatively high temperature and pressure with the aid of nickel as catalyst, which prone to explosion due to the presence of free gaseous hydrogen at high temperature and pressure. Catalytic transfer-hydrogenation (CTH) therefore is proposed as a promising alternative method, enabling CTH at room condition without the presence of free hydrogen. This research is focused to explore effects of temperature and reaction time to iodine value reduction on CTH of candlenut oil, including kinetics of its methyl ester. The hydrogenation utilizes Ag-Ni/silica 150 Å as catalyst and potassium formate (6M) as hydrogen donor. Three reaction temperatures were selected (40oC, 60oC and 78oC), where each reactions were performed for 4, 8, 12 and 16 hours. Hydrogenation was performed in batch reactor using isopropyl alcohol as solvent. Results showed that iodine values decreased with the increase of temperature and longer reaction time. The iodine value was still decreasing at 16 hours reaction time, indicating the possibility of longer reaction time. However, at 16 hours time, the iodine value yield has been within biodiesel standard range (Indonesian National Standard). The hydrogenation was first order reaction towards methyl ester double bonds concentration. Ko and E for candlenut methyl ester were 163.15/hour and 25.26 kJ/mol.
UR  - http://ijaseit.insightsociety.org/index.php?option=com_content&view=article&id=9&Itemid=1&article_id=2216
DO  - 10.18517/ijaseit.7.3.2216

RefWorks

RT Journal Article
ID 2216
A1 Hadiah, Fitri
A1 Soerawidjaja, Tatang Hernas
A1 Subagjo, -
A1 Prakoso, Tirto
T1 Low Temperature Catalytic-Transfer Hydrogenation of Candlenut Oil
JF International Journal on Advanced Science, Engineering and Information Technology
VO 7
IS 3
YR 2017
SP 843
OP 849
SN 2088-5334
PB INSIGHT - Indonesian Society for Knowledge and Human Development
K1 Catalytic-transfer hydrogenation; iodine value; Ag-Ni/silica; candlenut oil; polyunsaturated fatty acid
AB Fatty acids containing more than one double bond (polyunsaturated fatty acids) indicated by high iodine value (more than 120 g I2/100 g oil) are prone either to oxidative degradation or thermal degradation leading to the appearance of undesirable compounds or to thermal oligo-/polymerization causing gum formation. Therefore, polyunsaturated bonds in the fatty acid chains should be hydrogenated into monounsaturated ones. The conventional method using hydrogen (direct hydrogenation) at relatively high temperature and pressure with the aid of nickel as catalyst, which prone to explosion due to the presence of free gaseous hydrogen at high temperature and pressure. Catalytic transfer-hydrogenation (CTH) therefore is proposed as a promising alternative method, enabling CTH at room condition without the presence of free hydrogen. This research is focused to explore effects of temperature and reaction time to iodine value reduction on CTH of candlenut oil, including kinetics of its methyl ester. The hydrogenation utilizes Ag-Ni/silica 150 Å as catalyst and potassium formate (6M) as hydrogen donor. Three reaction temperatures were selected (40oC, 60oC and 78oC), where each reactions were performed for 4, 8, 12 and 16 hours. Hydrogenation was performed in batch reactor using isopropyl alcohol as solvent. Results showed that iodine values decreased with the increase of temperature and longer reaction time. The iodine value was still decreasing at 16 hours reaction time, indicating the possibility of longer reaction time. However, at 16 hours time, the iodine value yield has been within biodiesel standard range (Indonesian National Standard). The hydrogenation was first order reaction towards methyl ester double bonds concentration. Ko and E for candlenut methyl ester were 163.15/hour and 25.26 kJ/mol.
LK http://ijaseit.insightsociety.org/index.php?option=com_content&view=article&id=9&Itemid=1&article_id=2216
DO  - 10.18517/ijaseit.7.3.2216