Carboxymethylcellulose-supported palladium nanoparticles generated in situ from palladium(II) carboxymethylcellulose as an efficient and reusable catalyst for ligand- and base-free Heck-Matsuda and Suzuki-Miyaura couplings

2015 ◽  
Vol 29 (9) ◽  
pp. 646-652 ◽  
Author(s):  
Jinlong Xiao ◽  
Zhangxiu Lu ◽  
Zhipeng Li ◽  
Yiqun Li
Keyword(s):  
Palladium Nanoparticles ◽  
Reusable Catalyst ◽  
Supported Palladium

scholarly journals Dehydrogenation of Ethylene on Supported Palladium Nanoparticles: A Double View from Metal and Hydrocarbon Sides

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1643 ◽  
Author(s):  
Oleg A. Usoltsev ◽  
Anna Yu. Pnevskaya ◽  
Elizaveta G. Kamyshova ◽  
Andrei A. Tereshchenko ◽  
Alina A. Skorynina ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Palladium Nanoparticles ◽  
Pd Catalyst ◽  
X Ray Diffraction ◽  
Reaction Conditions ◽  
X Ray ◽  
Ab Initio Simulations ◽  
Supported Palladium ◽  
X Ray Absorption

Adsorption of ethylene on palladium, a key step in various catalytic reactions, may result in a variety of surface-adsorbed species and formation of palladium carbides, especially under industrially relevant pressures and temperatures. Therefore, the application of both surface and bulk sensitive techniques under reaction conditions is important for a comprehensive understanding of ethylene interaction with Pd-catalyst. In this work, we apply in situ X-ray absorption spectroscopy, X-ray diffraction and infrared spectroscopy to follow the evolution of the bulk and surface structure of an industrial catalysts consisting of 2.6 nm supported palladium nanoparticles upon exposure to ethylene under atmospheric pressure at 50 °C. Experimental results were complemented by ab initio simulations of atomic structure, X-ray absorption spectra and vibrational spectra. The adsorbed ethylene was shown to dehydrogenate to C2H3, C2H2 and C2H species, and to finally decompose to palladium carbide. Thus, this study reveals the evolution pathway of ethylene on industrial Pd-catalyst under atmospheric pressure at moderate temperatures, and provides a conceptual framework for the experimental and theoretical investigation of palladium-based systems, in which both surface and bulk structures exhibit a dynamic nature under reaction conditions.

scholarly journals Carboxymethylcellulose-supported Palladium Nanoparticles Formed in situ for Suzuki-Miyaura Coupling Reaction

2021 ◽  
Vol 9 (1) ◽  
pp. 18-28
Author(s):  
Xiaojian Liao ◽  
Yuemin Zhou ◽  
Fu Tang ◽  
Xia Lin ◽  
Yiqun Li
Keyword(s):  
Palladium Nanoparticles ◽  
Coupling Reaction ◽  
Supported Palladium

In situ generation of supported palladium nanoparticles from a Pd/Sn/S chalcogel and applications in 4-nitrophenol reduction and Suzuki coupling

2019 ◽  
Vol 7 (9) ◽  
pp. 4446-4450 ◽  
Author(s):  
Xinyao Shan ◽  
Ning Sui ◽  
Wengang Liu ◽  
Manhong Liu ◽  
Jian Liu
Keyword(s):  
Palladium Nanoparticles ◽  
Suzuki Coupling ◽  
Pd Nanoparticles ◽  
Nitrophenol Reduction ◽  
One Step ◽  
Supported Palladium ◽  
In Situ Generation ◽  
Catalytic Applications

A one-step in situ route to obtain well-defined and size-controllable Pd nanoparticles was reported and employed for catalytic applications.

Catalytic performance of the in situ synthesized palladium–polymer nanocomposite

2016 ◽  
Vol 40 (3) ◽  
pp. 2296-2303 ◽  
Author(s):  
Meenakshi Choudhary ◽  
Samarjeet Siwal ◽  
Debkumar Nandi ◽  
Kaushik Mallick
Keyword(s):  
Palladium Nanoparticles ◽  
Polymer Nanocomposite ◽  
Catalytic Performance ◽  
Supported Palladium ◽  
Polymer Supported

Multifunctional catalytic performance of the in situ synthesized polymer supported palladium nanoparticles (Pd NP).

Xylan-type hemicellulose supported palladium nanoparticles: a highly efficient and reusable catalyst for the carbon–carbon coupling reactions

2014 ◽  
Vol 4 (5) ◽  
pp. 1426-1435 ◽  
Author(s):  
Wei Chen ◽  
Lin-xin Zhong ◽  
Xin-wen Peng ◽  
Kun Wang ◽  
Zhi-feng Chen ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Palladium Nanoparticles ◽  
Cross Coupling ◽  
Recyclable Catalyst ◽  
Reusable Catalyst ◽  
Coupling Reactions ◽  
Highly Efficient ◽  
Cross Coupling Reactions ◽  
Supported Palladium

A heterogeneous catalyst was prepared by depositing palladium nanoparticles onto xylan-type hemicellulose, which is a kind of renewable biopolymer catalyst, and used as an efficient and recyclable catalyst for the Suzuki, Heck, and Sonogashira cross-coupling reactions.

The irreversible formation of palladium carbide during hydrogenation of 1-pentyne over silica-supported palladium nanoparticles: in situ Pd K and L3 edge XAS

2012 ◽  
Vol 14 (16) ◽  
pp. 5761 ◽  
Author(s):  
Min Wei Tew ◽  
Maarten Nachtegaal ◽  
Markus Janousch ◽  
Thomas Huthwelker ◽  
Jeroen A. van Bokhoven
Keyword(s):  
Palladium Nanoparticles ◽  
Supported Palladium
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