In situ formation of well-dispersed palladium nanoparticles immobilized in imidazolium-based organic ionic polymers

2014 ◽  
Vol 50 (74) ◽  
pp. 10871-10874 ◽  
Author(s):  
Huaixia Zhao ◽  
Yangxin Wang ◽  
Ruihu Wang
Keyword(s):  
Catalytic Activity ◽  
Palladium Nanoparticles ◽  
Ionic Polymers ◽  
New Strategy ◽  
In Situ Formation

A new strategy for the synthesis of well-dispersed palladium nanoparticles (NPs) immobilized in imidazolium-based porous organic ionic polymers was presented in this study. The as-synthesized polymers showed excellent catalytic activity and reusability in the hydrogenation of nitroarenes without extra addition of palladium species.

scholarly journals Ultra-Small Pd(0) Nanoparticles into a Designed Semisynthetic Lipase: An Efficient and Recyclable Heterogeneous Biohybrid Catalyst for the Heck Reaction under Mild Conditions

Molecules ◽  
2018 ◽  
Vol 23 (9) ◽  
pp. 2358 ◽  
Author(s):  
David Lopez-Tejedor ◽  
Blanca de las Rivas ◽  
Jose M. Palomo
Keyword(s):  
Catalytic Activity ◽  
Protein Structure ◽  
Heck Reaction ◽  
Catalytic Performance ◽  
Reducing Agent ◽  
Chemically Modified ◽  
Mild Conditions ◽  
In Situ Formation ◽  
Geobacillus Thermocatenulatus

A novel heterogeneous enzyme-palladium (Pd) (0) nanoparticles (PdNPs) bionanohybrid has been synthesized by an efficient, green, and straightforward methodology. A designed Geobacillus thermocatenulatus lipase (GTL) variant genetically and then chemically modified by the introduction of a tailor-made cysteine-containing complementary peptide- was used as the stabilizing and reducing agent for the in situ formation of ultra-small PdNPs nanoparticles embedded on the protein structure. This bionanohybrid was an excellent catalyst in the synthesis of trans-ethyl cinnamate by Heck reaction at 65 °C. It showed the best catalytic performance in dimethylformamide (DMF) containing 10–25% of water as a solvent but was also able to catalyze the reaction in pure DMF or with a higher amount of water as co-solvent. The recyclability and stability were excellent, maintaining more than 90% of catalytic activity after five cycles of use.

Facile Synthesis and Tunable Porosities of Imidazolium-Based Ionic Polymers that Contain In Situ Formed Palladium Nanoparticles

ChemCatChem ◽  
2016 ◽  
Vol 8 (13) ◽  
pp. 2234-2240 ◽  
Author(s):  
Yangxin Wang ◽  
Hong Zhong ◽  
Liuyi Li ◽  
Ruihu Wang
Keyword(s):  
Palladium Nanoparticles ◽  
Ionic Polymers ◽  
Facile Synthesis

Gamma radiation-assisted in situ synthesis of palladium nanoparticles supported on ethylenediamine-functionalized polypropylene fabric as an efficient catalyst for reduction of 4-nitrophenol

2020 ◽  
Vol 44 (44) ◽  
pp. 19337-19350
Author(s):  
Girlie Eunice P. Lopez ◽  
Jordan F. Madrid ◽  
Drexel H. Camacho
Keyword(s):  
Catalytic Activity ◽  
Gamma Radiation ◽  
Palladium Nanoparticles ◽  
In Situ Synthesis ◽  
Chemical Transformations ◽  
Efficient Catalyst ◽  
Polypropylene Fabric ◽  
P Immobilization

Immobilization of Pd nanometals on a functionalized non-woven polypropylene fabric offers heterogenous catalytic activity in many chemical transformations and convenient separation from the reaction mixture.

scholarly journals Porous SiOC monoliths with catalytic activity by in situ formation of Ni nanoparticles in solution‐based freeze casting

2020 ◽  
Vol 103 (5) ◽  
pp. 2991-3001 ◽  
Author(s):  
Daniel Schumacher ◽  
Michaela Wilhelm ◽  
Kurosch Rezwan
Keyword(s):  
Catalytic Activity ◽  
Ni Nanoparticles ◽  
Freeze Casting ◽  
In Situ Formation

Self-reducing asymmetric polymer membrane for in situ formation and containment of noble metal nanocatalysts

2015 ◽  
Vol 17 (8) ◽  
pp. 4157-4161 ◽  
Author(s):  
Sankararao Chappa ◽  
Rakesh N. Shinde ◽  
Ashok K. Pandey
Keyword(s):  
Catalytic Activity ◽  
Noble Metal ◽  
Redox Reactions ◽  
Polymer Membrane ◽  
Good Catalytic Activity ◽  
In Situ Formation ◽  
Inorganic And Organic

Highly stable metal nanocatalysts formed in self-reducing asymmetric polymer membrane exhibit good catalytic activity in inorganic and organic redox reactions.

Palladium nanoparticles in situ synthesized on Cyclea barbata pectin as a heterogeneous catalyst for Heck coupling in water, the reduction of nitrophenols and alkynes

2021 ◽  
Author(s):  
Van-Dung Le ◽  
T. Cam-Huong Le ◽  
Van-Trung Chau ◽  
T. Ngoc-Duyen Le ◽  
Chi-Hien Dang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalyst ◽  
Palladium Nanoparticles ◽  
Coupling Reaction ◽  
Heck Coupling

This study develops an effective method for in situ synthesis of PdNPs using Cyclea barbata pectin as green reducing and stabilizing reagent. The catalytic activity of nanocomposite was evaluated for Heck coupling reaction, reduction of nitrophenols and reduction of alkynes.

scholarly journals In situ formation of reduced graphene oxide structures in ceria by combined sol–gel and solvothermal processing

2016 ◽  
Vol 7 ◽  
pp. 1815-1821 ◽  
Author(s):  
Jingxia Yang ◽  
Johannes Ofner ◽  
Bernhard Lendl ◽  
Ulrich Schubert
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Reduced Graphene Oxide ◽  
Sol Gel ◽  
Ceria Nanoparticles ◽  
Oxidation Activity ◽  
Reduced Graphene ◽  
In Situ Formation ◽  
Gel Processing

Raman and IR investigations indicated the presence of reduced graphene oxide (rGO)-like residues on ceria nanoparticles after solvothermal treatment in ethanol. The appearance of such structures is closely related to cerium tert-butoxide as precursor and ethanol as solvothermal solvent. The rGO-like residues improve the catalytic CO oxidation activity. This was also confirmed by introduction of “external” graphene oxide during sol–gel processing, by which the rGO structures and the catalytic activity were enhanced.

Dual functionalized task specific ionic liquid promoted in situ generation of palladium nanoparticles in water: synergic catalytic system for Suzuki–Miyaura cross coupling

RSC Advances ◽  
2015 ◽  
Vol 5 (96) ◽  
pp. 79061-79069 ◽  
Author(s):  
Jayavant D. Patil ◽  
Suyog N. Korade ◽  
Supriya A. Patil ◽  
Dipak S. Gaikwad ◽  
Dattaprasad M. Pore
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Catalytic System ◽  
Palladium Nanoparticles ◽  
Cross Coupling ◽  
Reducing Agent ◽  
High Catalytic Activity ◽  
In Situ Generation ◽  
Task Specific Ionic Liquid

A new task specific ionic liquid with hydroxyl and prolinate functionalities acts as a reducing agent and serves as a ligand and stabilizer for in situ formed palladium nanoparticles. This system displays high catalytic activity for Suzuki–Miyaura cross-coupling in water.

In Situ Formation of Pt-Au Nanoparticles on Magnetic Composites Carriers: Tuning Catalytic Activity by Incorporation of Different Metal Oxides

2017 ◽  
Vol 39 (1) ◽  
pp. 71-77 ◽  
Author(s):  
Zewu Zhang ◽  
Qiong Wu ◽  
Xiaohai Bu ◽  
Zusheng Hang ◽  
Zhangzhong Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Oxides ◽  
Au Nanoparticles ◽  
Magnetic Composites ◽  
In Situ Formation
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