Zeolite Y nanosheet assembled palladium catalysts with high catalytic activity and selectivity in the vinylation of thiophenes

2016 ◽  
Vol 52 (15) ◽  
pp. 3115-3118 ◽  
Author(s):  
Wenqian Fu ◽  
Yu Feng ◽  
Zhongxue Fang ◽  
Qun Chen ◽  
Ting Tang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
High Activity ◽  
Palladium Catalysts ◽  
Zeolite Y ◽  
High Catalytic Activity ◽  
Pd Catalyst ◽  
Macroporous Structure

Zeolite Y nanosheets with a micro–meso–macroporous structure were synthesized, and applied in the assembly of a Pd catalyst (Pd/NS-Y) for direct vinylation of thiophenes with high activity and selectivity, as compared to Pd(OAc)2, Pd(NO3)2, and Pd(PPh3)4 catalysts.

Controllable synthesis of urchin-like hierarchical superstructure MOFs with high catalytic activity and stability

2021 ◽  
Author(s):  
Zhanke Wang ◽  
Lei Ge ◽  
Guangxu Zhang ◽  
Rongrong Gao ◽  
Hao Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
High Activity ◽  
Metal Organic Frameworks ◽  
High Catalytic Activity ◽  
Controllable Synthesis ◽  
Metal Organic ◽  
Self Assembled

A novel dissolution-crystallization strategy was developed to synthesize urchin-like superstructure metal-organic frameworks (MOFs) with self-assembled 1D nanorods. The superstructure MOFs not only inherit the high activity of nano-sized MOFs but...

scholarly journals Cellulose nanocrystals (CNCs) as hard templates for preparing mesoporous zeolite Y assemblies with high catalytic activity

2020 ◽  
Vol 22 (15) ◽  
pp. 5115-5122 ◽  
Author(s):  
Samer Abdulridha ◽  
Jiuxing Jiang ◽  
Shaojun Xu ◽  
Zhaoxia Zhou ◽  
He Liang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Cellulose Nanocrystals ◽  
Zeolite Y ◽  
Synthesis Method ◽  
High Catalytic Activity ◽  
Mesoporous Zeolite ◽  
Y Zeolite ◽  
Directed Synthesis

Faujasite (FAU) Y zeolite assemblies with high mesoporosity (Sext = 347 m2 g−1 and Vmeso = 0.52 cm3 g−1) were synthesised using sustainable and economic cellulose nanocrystals (CNCs) via a template-directed synthesis method.

Zeolite Y nanoparticle assemblies with high activity in the direct hydration of terminal alkynes

RSC Advances ◽  
2016 ◽  
Vol 6 (74) ◽  
pp. 69822-69827 ◽  
Author(s):  
Shuling Xu ◽  
Zhi Yun ◽  
Yu Feng ◽  
Ting Tang ◽  
Zhongxue Fang ◽  
...  
Keyword(s):  
High Activity ◽  
Heterogeneous Catalyst ◽  
Zeolite Y ◽  
Nanoparticle Assembly ◽  
Terminal Alkynes ◽  
Macroporous Structure ◽  
Nanoparticle Assemblies ◽  
Highly Efficient ◽  
Efficient Heterogeneous Catalyst

A strong acidic zeolite Y nanoparticle assembly (HNANO-Y) with a micro–meso–macroporous structure was synthesized and used as a highly efficient heterogeneous catalyst for the hydration of alkynes to prepare ketone compounds.

PtRu Nanoparticle Catalytic Activity Enhanced by the Ligand Effect

2008 ◽  
Vol 1127 ◽  
Author(s):  
Shuji Goto ◽  
Yuli Li ◽  
Naomi Nagasawa ◽  
Tadashi Senoo ◽  
Kazuhiro Noda ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Fuel Cell ◽  
High Activity ◽  
Direct Methanol Fuel Cell ◽  
Metal Content ◽  
High Catalytic Activity ◽  
Ligand Effect ◽  
Direct Methanol ◽  
Methanol Fuel Cell ◽  
Ptru Nanoparticles

ABSTRACTWe synthesized a methanol electrocatalyst with high activity and low noble metal content. The electrocatalyst consists of carbon&supported PtRu nanoparticles, which have 1-2 Pt monoatomic layers on Ru nanocores. In spite of the pure Pt surface, the catalyst showed high catalytic activity when used in the anode of a direct methanol fuel cell. Clearly the underlying Ru atoms modified the property of the surface Pt atoms, bringing about the high catalytic activity.

High activity and stability in the cross-coupling of aryl halides with disulfides over Cu-doped hierarchically porous zeolite ZSM-5

2015 ◽  
Vol 51 (27) ◽  
pp. 5890-5893 ◽  
Author(s):  
Wenqian Fu ◽  
Taotao Liu ◽  
Zhongxue Fang ◽  
Yuli Ma ◽  
Xiang Zheng ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
High Activity ◽  
Cross Coupling ◽  
Aryl Halides ◽  
Macroporous Structure ◽  
Hierarchically Porous ◽  
The Cross

A Cu-doped zeolite ZSM-5 (Cu-ZSM-5-M) with a micro-meso-macroporous structure was directly synthesized, and it exhibits excellent catalytic activity and good recyclability in the cross-coupling of aryl halides with diphenyl disulfides.

scholarly journals A highly active Ni/Ce0.8Sm0.2O1.9 anode catalyst with a three-dimensionally ordered macroporous structure for solid oxide fuel cells

2020 ◽  
Vol 8 (16) ◽  
pp. 7792-7800 ◽  
Author(s):  
Tian Gan ◽  
Xinqiang Fan ◽  
Ye Liu ◽  
Chengyu Wang ◽  
Haoran Mei ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Solid Oxide Fuel Cells ◽  
Anode Material ◽  
Solid Oxide ◽  
High Catalytic Activity ◽  
Oxide Fuel ◽  
Macroporous Structure ◽  
Anode Catalyst ◽  
Highly Active ◽  
Ordered Macroporous

Ni/3DOM Ce0.8Sm0.2O1.9 shows a high catalytic activity as the anode material of CH3OH fueled SOFCs.

scholarly journals Physicochemical properties of nanostructured Pd/lanthanide-doped ceria spheres with high catalytic activity for CH4 combustion

2018 ◽  
Vol 6 (17) ◽  
pp. 7488-7499 ◽  
Author(s):  
Rodolfo O. Fuentes ◽  
Leandro M. Acuña ◽  
A. Gabriela Leyva ◽  
Richard T. Baker ◽  
Huiyan Pan ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Physicochemical Properties ◽  
High Activity ◽  
High Catalytic Activity ◽  
Doped Ceria ◽  
Total Conversion ◽  
Ch4 Combustion

Nanostructured 1 wt% Pd/LnDC spheres exhibited high activity for CH4 oxidation with total conversion of CH4 attained at a temperature below 400 °C.

Nanoporous PdCe bimetallic nanocubes with high catalytic activity towards ethanol electro-oxidation and the oxygen reduction reaction in alkaline media

2018 ◽  
Vol 6 (46) ◽  
pp. 23560-23568 ◽  
Author(s):  
Jiyun Chen ◽  
Yao Li ◽  
Nali Lu ◽  
Chunhuan Tian ◽  
Zhida Han ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
High Activity ◽  
Melt Spinning ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
High Catalytic Activity ◽  
Simple Method ◽  
Electro Oxidation

In this work, we reported a simple method to fabricate nanoporous PdCe (NP-PdCe) nanocubes with high activity and good stability by melt spinning combined with chemical dealloying.

Gas–liquid interface-mediated room-temperature synthesis of “clean” PdNiP alloy nanoparticle networks with high catalytic activity for ethanol oxidation

2014 ◽  
Vol 50 (85) ◽  
pp. 12877-12879 ◽  
Author(s):  
Rongfang Wang ◽  
Yuanyuan Ma ◽  
Hui Wang ◽  
Julian Key ◽  
Shan Ji
Keyword(s):  
Catalytic Activity ◽  
High Activity ◽  
Room Temperature ◽  
Ethanol Oxidation ◽  
Interface Reaction ◽  
Liquid Interface ◽  
High Catalytic Activity ◽  
Temperature Synthesis ◽  
Room Temperature Synthesis

PdNiP alloy nanoparticle networks prepared via a gas–liquid interface reaction had markedly high activity and durability for ethanol oxidation.

scholarly journals New hydrogen-bonding organocatalysts: Chiral cyclophosphazanes and phosphorus amides as catalysts for asymmetric Michael additions

2014 ◽  
Vol 10 ◽  
pp. 224-236 ◽  
Author(s):  
Helge Klare ◽  
Jörg M Neudörfl ◽  
Bernd Goldfuss
Keyword(s):  
Hydrogen Bonding ◽  
Catalytic Activity ◽  
High Activity ◽  
Michael Addition ◽  
Bond Activation ◽  
High Catalytic Activity ◽  
Open Chain ◽  
High Hydrogen ◽  
Michael Additions ◽  
Asymmetric Michael Addition

Ten novel hydrogen-bonding catalysts based on open-chain PV-amides of BINOL and chinchona alkaloids as well as three catalysts based on rigid cis-PV-cyclodiphosphazane amides of N 1,N 1-dimethylcyclohexane-1,2-diamine have been developed. Employed in the asymmetric Michael addition of 2-hydroxynaphthoquinone to β-nitrostyrene, the open-chain 9-epi-aminochinchona-based phosphorus amides show a high catalytic activity with almost quantitative yields of up to 98% and enantiomeric excesses of up to 51%. The cyclodiphosphazane catalysts show the same high activity and give improved enantiomeric excesses of up to 75%, thus representing the first successful application of a cyclodiphosphazane in enantioselective organocatalysis. DFT computations reveal high hydrogen-bonding strengths of cyclodiphosphazane PV-amides compared to urea-based catalysts. Experimental results and computations on the enantiodetermining step with cis-cyclodiphosphazane 14a suggest a strong bidentate H-bond activation of the nitrostyrene substrate by the catalyst.

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