Home

Person

Ning Yan

This person is no longer with EPFL

About
Privacy
Disclaimer

Graph Chatbot

Related publications (46)

Nanometallic chemistry: deciphering nanoparticle catalysis from the perspective of organometallic chemistry and homogeneous catalysis

Paul Joseph Dyson, Ning Yan, Yuan Yuan

Nanoparticle (NP) catalysis is traditionally viewed as a sub-section of heterogeneous catalysis. However, certain properties of NP catalysts, especially NPs dispersed in solvents, indicate that there could be benefits from viewing them from the perspective ...

Royal Society of Chemistry2013

Thermally responsive gold nanocatalysts based on a modified poly-vinylpyrrolidone

Paul Joseph Dyson, Ning Yan, Yuan Yuan, Kelly Joan Kilpin

Poly-vinylpyrrolidone (PVP) stabilized nanoparticle (NP) catalysts are among the most active NP catalysts demonstrating excellent activities and stabilities in a wide and diverse range of reactions. One of the main limitations, that tend to prevent their u ...

Elsevier Science Bv2013

How Strong Is Hydrogen Bonding in Ionic Liquids? Combined X-ray Crystallographic, Infrared/Raman Spectroscopic, and Density Functional Theory Study

Gabor Laurenczy, Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei, Ning Yan, Emilia Paunescu

Hydrogen bonding in ionic liquids based on the 1-(2'-hydroxylethyl)-3-methylimidazolium cation (C(2)OHmim) and various anions (A) of differing H-bond acceptor strength, viz. hexafluorophosphate PF6, tetrafluoroborate BF4, bis-(trifluoro ...

American Chemical Society2013

Cycloaddition of CO2 to epoxides catalyzed by imidazolium-based polymeric ionic liquids

Gabor Laurenczy, Paul Joseph Dyson, Zhaofu Fei, Ning Yan, Felix Daniel Bobbink, Hongbing Song, Emilia Paunescu, Huizhen Liu, Saeideh Ghazali Esfahani

A series of cross-linked ionic polymers based on styrene-functionalized imidazolium salts with chloride, hexafluorophosphate, or tetrafluoroborate counter anions have been prepared and characterized using a range of analytical and spectroscopic techniques ...

Royal Society of Chemistry2013

Development of Palladium Surface-Enriched Heteronuclear Au-Pd Nanoparticle Dehalogenation Catalysts in an Ionic Liquid

Gabor Laurenczy, Paul Joseph Dyson, Ning Yan, Yuan Yuan, Xiao Yuan, Xi Chen

Heteronuclear Au–Pd nanoparticles were prepared and immobilized in the functionalized ionic liquid [C2OHmim][NTf2]. The structural and electronic properties of the nanoparticles were characterized by a range of techniques and the surface of the nanoparticl ...

Wiley-Blackwell2013

Insights into the Formation Mechanism of Rhodium Nanocubes

Paul Joseph Dyson, Ning Yan, Yuan Yuan

The mechanism of formation of rhodium nanocubes in the presence of tetradecyltrimethylammonium bromide and polyvinylpyrrolidone in ethylene glycol was studied in situ by XAFS, in conjunction with other ex situ techniques including MALDI-TOF MS, XRD, TEM, a ...

2012

Rationalization of Solvation and Stabilization of Palladium Nanoparticles in Imidazolium-Based Ionic Liquids by DFT and Vibrational Spectroscopy

Paul Joseph Dyson, Ning Yan, Xiao Yuan

A combined DFT/vibrational spectroscopy approach is used to determine the interactions of the 1,3-dimethylimidazolium ([Mmim]+) and 1-ethyl-3-methylimidazolium ([Emim]+) cations and [BF4]- anions with each other in the liquid state and with Pd nanoparticle ...

2012

Preface Foreword

Paul Joseph Dyson, Ning Yan

Elsevier2012

Rational design of a molecular nanocatalysts-stabilizer that enhances both catalytic activity and nanoparticle stability

Paul Joseph Dyson, Ryan Dykeman, Ning Yan, Yuan Yuan

Wiley-VCH Verlag2012

Advances in the Rational Design of Rhodium Nanoparticle Catalysts: Control via Manipulation of the Nanoparticle Core and Stabilizer

Paul Joseph Dyson, Ning Yan, Yuan Yuan

This review describes some of the fascinating advances in the field of rhodium nanoparticle (NP) catalysis that have emerged in recent years. The examples described are categorized according to the research approach applied, involving either direct enginee ...

2012

Tuning the Chemoselectivity of Rh Nanoparticle Catalysts by Site-Selective Poisoning with Phosphine Ligands: The Hydrogenation of Functionalized Aromatic Compounds

Gabor Laurenczy, Paul Joseph Dyson, Ning Yan, Weijia Gan, Dennis Snelders

The hydrogenation of phenylacetone to cyclohexylacetone, in which the aromatic ring is selectively reduced in preference to the carbonyl group, has been achieved with chemoselectivities exceeding 90%. The catalyst (precatalyst) used to achieve this transfo ...

2012

A remarkable anion effect on palladium nanoparticle formation and stabilization in hydroxyl-functionalized ionic liquids

Paul Joseph Dyson, Ning Yan, Xiao Yuan

Pd nanoparticles (NPs) with a small size and narrow size distribution were prepared from the decomposition of Pd(OAc)(2) in a series of hydroxyl-functionalized ionic liquids (ILs) comprising the 1-(2'-hydroxylethyl)-3-methylimidazolium cation and various a ...

2012

In situ time-resolved DXAFS study of Rh nanoparticle formation mechanism in ethylene glycol at elevated temperature

Ning Yan

A combination of in situ time-resolved DXAFS and ICP-MS techniques reveals that the formation process of Rh nanoparticles (NPs) from rhodium trichloride trihydrate (RhCl3 center dot 3H(2)O) in ethylene glycol with polyvinylpyrrolidone (PVP) at elevated tem ...

2012

Evaluation of ionic liquid soluble imidazolium tetrachloropalladate pre-catalysts in Suzuki coupling reactions

Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei, Ning Yan, Hongbing Song, Kelly Joan Kilpin, Xiang Li

Imidazolium salts with aromatic groups 1,3-bis(9-anthracenylmethyl)imidazolium chloride ([Bamim]Cl), 1,3-bis(1-naphthalenylmethyl)imidazolium chloride ([Bnmim]Cl) and 1,3-bis( benzylmethyl)imidazolium chloride ([Bbmim]Cl) were reacted with PdCl2 forming th ...

Elsevier2012

Defunctionalization of fructose and sucrose: Iron-catalyzed production of 5-hydroxymethylfurfural from fructose and sucrose

Paul Joseph Dyson, Ning Yan, Yuehui Li

A highly efficient iron-catalyzed production of 5-hydroxymethylfurfural (HMF) from sugar is reported. The dehydration of fructose and sucrose has been studied in the presence of different iron salts and co-catalysts. As a result, it was found that fructose ...

Elsevier2011

pH-Sensitive Gold Nanoparticle Catalysts for the Aerobic Oxidation of Alcohols

Paul Joseph Dyson, Ning Yan, Yuan Yuan

Gold nanoparticles (NPs) stabilized by carboxylate modified polyvinylpyrrolidone have been prepared and fully characterized. The gold NPs efficiently catalyze the aerobic oxidation of benzyl alcohol in water at ambient temperature and are easily separated ...

2011

Crystallisation of inorganic salts containing 18-crown-6 from ionic liquids

Gabor Laurenczy, Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei, Ning Yan

Reaction of the zwitterionic imidazolium salt [(CH2COOH)(CH2COO)i.m.] with K2CO3 or BaO in the presence of 18-crown-6 affords the salts [(CH2COO)2i.m.][K(18-crown-6)] and [(CH2COO)2i.m.]2[Ba(18-crown-6)]. Recrystn. of these crown complexes from the ionic l ...

Elsevier2010

Hydrodeoxygenation of lignin-derived phenols into alkanes by using nanoparticle catalysts combined with Bronsted acidic ionic liquids

Paul Joseph Dyson, Ryan Dykeman, Ning Yan, Yuan Yuan

The transformation of lignin-derived phenolic compds. to alkanes was achieved using catalysts based on Bronsted acidic ionic liqs. (ILs). The catalytic system is composed of metal nanoparticles (NPs) and a functionalized Bronsted acidic IL immobilized in a ...

2010

Thermoresponsive polymers based on polyvinylpyrrolidone: applications in nanoparticle catalysis

Paul Joseph Dyson, Ning Yan, Yuan Yuan, Zhe Li

Two thermoresponsive polymers, poly(3-ethyl-1-vinyl-2-pyrrolidone) and poly(3-butyl-1-vinyl-2-pyrrolidone), with very sensitive and reversible temp.-dependent water soly. were described. The application of these polymers as Au nanocatalyst stabilizers lead ...

2010

Highly selective hydrogenation of aromatic chloronitro compounds to aromatic chloroamines with ionic-liquid-like copolymer stabilized platinum nanocatalysts in ionic liquids

Paul Joseph Dyson, Zhaofu Fei, Ning Yan, Xiao Yuan

Platinum nanoparticles (PtNPs stabilized by an ionic-liq.-like-copolymer (IP) immobilized in various ionic liqs. (ILs)) effectively catalyze the selective hydrogenation of arom. chloronitro compds. to arom. chloroamines, a reaction of considerable com. sig ...

Royal Society of Chemistry2010

Page 2 of 3