Influences of the Support Property and Pd Loading on Activity of Mesoporous Silica-Supported Pd Catalysts in Partial Hydrogenation of Palm Biodiesel Fuel

2016 ◽  
Vol 4 (3) ◽  
pp. 230-237 ◽  
Author(s):  
Shih-Yuan Chen ◽  
Lalita Attanatho ◽  
Takehisa Mochizuki ◽  
Qingxin Zheng ◽  
Makoto Toba ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Biodiesel Fuel ◽  
Partial Hydrogenation ◽  
Pd Catalysts ◽  
Supported Pd Catalysts ◽  
Support Property ◽  
Supported Pd

Selective Oxidation of Glyoxal to Glyoxalic Acid by Air over Mesoporous Silica Supported Pd Catalysts

2019 ◽  
Vol 149 (7) ◽  
pp. 1894-1902 ◽  
Author(s):  
Junchi Liu ◽  
Feng Qin ◽  
Zhen Huang ◽  
Liang Huang ◽  
Zhenan Liao ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Selective Oxidation ◽  
Pd Catalysts ◽  
Supported Pd Catalysts ◽  
Glyoxalic Acid ◽  
Supported Pd

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.

Reaction pathways for the HDO of guaiacol over supported Pd catalysts: Effect of support type in the deoxygenation of hydroxyl and methoxy groups

2021 ◽  
pp. 111491
Author(s):  
Camila A. Teles ◽  
Priscilla M. de Souza ◽  
Raimundo C. Rabelo-Neto ◽  
Alejandra Teran ◽  
Gary Jacobs ◽  
...  
Keyword(s):  
Reaction Pathways ◽  
Pd Catalysts ◽  
Supported Pd Catalysts ◽  
Methoxy Groups ◽  
Effect Of Support ◽  
Supported Pd

Characterization and Reactivity of Alumina-Supported Pd Catalysts for the Room-Temperature Hydrodechlorination of Chlorobenzene

2007 ◽  
Vol 111 (17) ◽  
pp. 6447-6453 ◽  
Author(s):  
N. Seshu Babu ◽  
N. Lingaiah ◽  
Rajesh Gopinath ◽  
P. Siva Sankar Reddy ◽  
P. S. Sai Prasad
Keyword(s):  
Room Temperature ◽  
Pd Catalysts ◽  
Supported Pd Catalysts ◽  
Supported Pd

Recyclable polymer-supported Pd catalysts for aryl amination reactions

2005 ◽  
Vol 46 (43) ◽  
pp. 7363-7366 ◽  
Author(s):  
Meritxell Guinó ◽  
King Kuok (Mimi) Hii
Keyword(s):  
Pd Catalysts ◽  
Aryl Amination ◽  
Supported Pd Catalysts ◽  
Polymer Supported ◽  
Supported Pd
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