Transfer hydrogenation and transfer hydrogenolysis: XII. Selective hydrogenation of fatty acid methyl esters by various hydrogen donors

1978 ◽  
Vol 55 (3) ◽  
pp. 332-336 ◽  
Author(s):  
T. Tagawa ◽  
T. Nishiguchi ◽  
K. Fukuzumi
Keyword(s):  
Fatty Acid ◽  
Selective Hydrogenation ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Transfer Hydrogenation ◽  
Acid Methyl ◽  
Hydrogen Donors

Selective hydrogenation of fatty acid methyl esters over palladium on carbon-based monoliths

2007 ◽  
Vol 128 (1-2) ◽  
pp. 13-17 ◽  
Author(s):  
Agustín F. Pérez-Cadenas ◽  
Freek Kapteijn ◽  
Martijn M.P. Zieverink ◽  
Jacob A. Moulijn
Keyword(s):  
Fatty Acid ◽  
Selective Hydrogenation ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Acid Methyl ◽  
Palladium On Carbon ◽  
Carbon Based

Selective hydrogenation of fatty acid methyl esters on palladium catalysts supported on carbon-coated monoliths

Carbon ◽  
2006 ◽  
Vol 44 (1) ◽  
pp. 173-176 ◽  
Author(s):  
Agustín F. Pérez-Cadenas ◽  
Martijn M.P. Zieverink ◽  
Freek Kapteijn ◽  
Jacob A. Moulijn
Keyword(s):  
Fatty Acid ◽  
Selective Hydrogenation ◽  
Palladium Catalysts ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Acid Methyl ◽  
Carbon Coated

scholarly journals Effect of Pd Precursor Salts on the Chemical State, Particle Size, and Performance of Activated Carbon-Supported Pd Catalysts for the Selective Hydrogenation of Palm Biodiesel

2021 ◽  
Vol 22 (3) ◽  
pp. 1256
Author(s):  
Parncheewa Udomsap ◽  
Apiluck Eiad-Ua ◽  
Shih-Yuan Chen ◽  
Takehisa Mochizuki ◽  
Nuwong Chollacoop ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Fatty Acid ◽  
Selective Hydrogenation ◽  
Fatty Acid Methyl Esters ◽  
Methyl Esters ◽  
Biodiesel Fuel ◽  
Pd Catalysts ◽  
Acid Methyl ◽  
Supported Pd Catalysts ◽  
Supported Pd

To improve the oxidative stability of biodiesel fuel (BDF), the polyunsaturated fatty acid methyl esters (poly-FAME) presented in commercial palm oil-derived biodiesel fuel (palm-BDF) were selectively hydrogenated to monounsaturated fatty acid methyl esters (mono-FAME) under a mild condition (80 °C, 0.5 MPa) using activated carbon (AC)-supported Pd catalysts with a Pd loading of 1 wt.%. The partially hydrotreated palm-BDF (denoted as H-FAME) which has low poly-FAME components is a new type of BDF with enhanced quality for use in high blends. In this study, we reported that the chemical states and particle sizes of Pd in the prepared Pd/AC catalysts were significantly influenced by the Pd precursors, Pd(NO3)2 and Pd(NH3)4Cl2, and thus varied their hydrogenation activity and product selectivity. The 1%Pd/AC (nit) catalyst, prepared using Pd(NO3)2, presented high performance for selective hydrogenation of poly-FAME into mono-FAME with high oxidation stability, owning to its large Pd particles (8.4 nm). Conversely, the 1%Pd/AC (amc) catalyst, prepared using Pd(NH3)4Cl2, contained small Pd particles (2.7 nm) with a little Cl residues, which could be completely removed by washing with an aqueous solution of 0.1 M NH4OH. The small Pd particles gave increased selectivity toward unwanted-FAME components, particularly the saturated fatty acid methyl esters during the hydrogenation of poly-FAME. This selectivity is unprofitable for improving the biodiesel quality.

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