scholarly journals Formation and Growth of Pd Nanoparticles Inside a Highly Cross-Linked Polystyrene Support: Role of the Reducing Agent

2014 ◽  
Vol 118 (16) ◽  
pp. 8406-8415 ◽  
Author(s):  
Elena Groppo ◽  
Giovanni Agostini ◽  
Elisa Borfecchia ◽  
Liu Wei ◽  
Francesco Giannici ◽  
...  
Keyword(s):  
Pd Nanoparticles ◽  
Reducing Agent ◽  
Polystyrene Support

The role of reducing agent in perylene tetracarboxylic acid coating on graphene sheets enhances Pd nanoparticles-electrocalytic ethanol oxidation

2013 ◽  
Vol 3 (9) ◽  
pp. 2303 ◽  
Author(s):  
Shuwen Li ◽  
Honglei Yang ◽  
Zhengping Dong ◽  
Shujing Guo ◽  
Jiahui Zhao ◽  
...  
Keyword(s):  
Ethanol Oxidation ◽  
Pd Nanoparticles ◽  
Reducing Agent ◽  
Graphene Sheets ◽  
Tetracarboxylic Acid ◽  
Acid Coating

Matrix-Assisted Pulsed Laser Evaporation Deposition of Pd Nanoparticles: The Role of Solvent

2015 ◽  
Vol 7 (11) ◽  
pp. 2388-2400
Author(s):  
Maura Cesaria ◽  
Anna Paola Caricato ◽  
Antonietta Taurino ◽  
Vincenzo Resta ◽  
Maria Rosaria Belviso ◽  
...  
Keyword(s):  
Pulsed Laser ◽  
Pd Nanoparticles ◽  
Laser Evaporation ◽  
Role Of Solvent

Role of polyaniline morphology in Pd particles dispersion. Hydrogenation of alkynes in the presence of Pd-polyaniline catalysts

2013 ◽  
Vol 67 (8) ◽  
Author(s):  
Robert Kosydar ◽  
Monika Goral ◽  
Alicja Drelinkiewicz ◽  
Jaroslav Stejskal
Keyword(s):  
Palladium Catalysts ◽  
Active Sites ◽  
Pd Nanoparticles ◽  
Liquid Phase Hydrogenation ◽  
Close Proximity ◽  
Physicochemical Features ◽  
Molecular Masses ◽  
Palladium Particles ◽  
Pani Sample

AbstractTwo polyaniline (PANI) samples of various molecular masses were used for the preparation of palladium catalysts (with 2 mass % of Pd). The physicochemical features of starting polyanilines were found to substantially affect the size and extent of palladium nanoparticles aggregation. Strongly aggregated large palladium particles appeared in the PANI sample of more compact morphology (PANI-H), higher crystallinity and lower specific surface area. Pd nanoparticles of a definitively smaller size were formed in the more amorphous PANI sample of looser morphology (PANI-L) and the extent of particles aggregation was markedly lower. The catalytic properties of Pd/PANI samples were studied in a liquid phase hydrogenation of unsaturated triple bond (C≡C) in alkynes reactants, phenylacetylene, and cyclohexylacetylene. The 2 mass % Pd/PANI-L catalyst prepared using polymer of less compact texture exhibited much higher activity in both reactions. In the presence of the 2 mass % Pd/PANI-L catalyst, alkene products were formed with a high selectivity (approximately 90 %) attained at the almost complete conversion of alkynes. This highly selective hydrogenation of the C≡C to the C=C bond was related to the presence of an electroactive polymer, PANI, in close proximity with Pd active sites. Polyaniline could have a role in a steric effect as well as in a modification of adsorptive properties of Pd centres.

Aspects of reducing agent and role of amine species in the reduction of NO over H-ZSM-5 in oxygen excess

2008 ◽  
Vol 258 (2) ◽  
pp. 386-392 ◽  
Author(s):  
R MATARRESE ◽  
H HARELINDINGELSTEN ◽  
M SKOGLUNDH
Keyword(s):  
Reducing Agent ◽  
Reduction Of No ◽  
Oxygen Excess

The role of magnetic nanoparticles (MNP) as reducing agents in an MNP-supported Pd–catalyst for the reductive homocoupling of aryl halides

2012 ◽  
Vol 90 (1) ◽  
pp. 138-144 ◽  
Author(s):  
Jie Zheng ◽  
Shengyue Lin ◽  
Bi-Wang Jiang ◽  
Todd B. Marder ◽  
Zhen Yang
Keyword(s):  
Magnetic Nanoparticles ◽  
Aryl Halide ◽  
Reducing Power ◽  
Cross Coupling ◽  
Reducing Agent ◽  
Aryl Halides ◽  
Pd Catalyst ◽  
Reductive Homocoupling ◽  
Supported Pd

A palladium pincer catalyst grafted onto the surface of magnetic nanoparticles (MNPs) has been developed. This material effectively catalyzes the reductive homocoupling of various aryl halide substrates, with the MNP support acting as the reducing agent. The catalyst can be recycled up to five times in the absence of additional reducing agent to give almost quantitative yields of biaryl homocoupling products. After the reducing power of the MNP has been depleted, the supported Pd complex remains an effective catalyst for Suzuki–Miyaura cross-coupling.

Deposition of Au nanoparticles inside porous CeO2 nanocubes using Langmuir–Blodgett technique

2018 ◽  
Vol 42 (2) ◽  
pp. 1379-1386 ◽  
Author(s):  
Subhasis Das ◽  
Gourab Bhattacharjee ◽  
Biswarup Satpati ◽  
Mukesh Kumar ◽  
Sasanka Deka ◽  
...  
Keyword(s):  
Au Nanoparticles ◽  
Dual Role ◽  
Reducing Agent ◽  
Langmuir Blodgett

AuCl4-ions are reduced to Au0 inside the pores of CeO2 nanocubes by oleylamine, which has the dual role of capping and reducing agent.

Role of reducing agent in the formation of ZnSe nanorods by chemical reduction method

2010 ◽  
Vol 51 (3) ◽  
pp. 30605 ◽  
Author(s):  
T. K. Das ◽  
R. Bhattacharya ◽  
A. Manna ◽  
S. Saha
Keyword(s):  
Reduction Method ◽  
Chemical Reduction ◽  
Reducing Agent ◽  
Chemical Reduction Method

Role of reducing agent and self-sacrificed copper-thiourea complex in the synthesis of precisely controlled Cu2−xS microtubes

2019 ◽  
Vol 505 ◽  
pp. 26-32 ◽  
Author(s):  
Tvarit A. Patel ◽  
C. Balasubramanian ◽  
Emila Panda
Keyword(s):  
Reducing Agent ◽  
Thiourea Complex

Understanding the Role of Oxidative Etching in the Polyol Synthesis of Pd Nanoparticles with Uniform Shape and Size

2005 ◽  
Vol 127 (20) ◽  
pp. 7332-7333 ◽  
Author(s):  
Yujie Xiong ◽  
Jingyi Chen ◽  
Benjamin Wiley ◽  
Younan Xia ◽  
Shaul Aloni ◽  
...  
Keyword(s):  
Pd Nanoparticles ◽  
Polyol Synthesis ◽  
Oxidative Etching ◽  
Shape And Size

Palladium nanoparticles stabilized with N-doped porous carbons derived from metal–organic frameworks for selective catalysis in biofuel upgrade: the role of catalyst wettability

2016 ◽  
Vol 18 (5) ◽  
pp. 1212-1217 ◽  
Author(s):  
Yu-Zhen Chen ◽  
Guorui Cai ◽  
Yanmei Wang ◽  
Qiang Xu ◽  
Shu-Hong Yu ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Palladium Nanoparticles ◽  
Metal Organic Frameworks ◽  
Pd Nanoparticles ◽  
Porous Carbons ◽  
Highly Efficient ◽  
Metal Organic ◽  
Selective Catalysis

Tiny Pd nanoparticles stabilized with MOF-derived N-doped porous carbon with great hydrophilicity have been demonstrated to be highly efficient and selective in catalysis for biofuel upgrade.

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