The Performance of Highly Dispersed Au-Pd/ZrO2 Catalyst for Base-Free Synthesis N-Benzylidenebenzylamine

2014 ◽  
Vol 955-959 ◽  
pp. 498-501
Author(s):  
Wu Lan Ao ◽  
Mei Lin Jia ◽  
Yong Sheng Bao
Keyword(s):  
Reduction Method ◽  
Catalytic Properties ◽  
Reducing Agent ◽  
High Dispersion ◽  
Pd Catalyst ◽  
Highly Dispersed ◽  
Uv Visible ◽  
Protection Agent ◽  
Dispersion Composition ◽  
Alloy Catalyst

A series of Au/ZrO2, Pd/ZrO2, Au-Pd/ZrO2catalysts were prepared by the solution reduction method using NaBH4as reducing agent and L-lysine as protection agent. UV-Visible and XRD were employed to investigate the dispersion, composition and catalytic properties of the catalyst. The results show that Au-Pd/ZrO2alloy catalyst with high dispersion display higher activity than monometallic Au, monometallic Pd catalyst for the base-fee synthesis of N-Benzylidenebenzylamine.

Synthesis and Characterization of Highly Dispersed Au-Pd Alloy Nanoparticles Supported on ZrO2

2013 ◽  
Vol 716 ◽  
pp. 89-93 ◽  
Author(s):  
Wen Jing Cui ◽  
Wu Lan Ao ◽  
Yu Lin Zhang ◽  
Zhao Ri Ge Tu Bao
Keyword(s):  
Reduction Method ◽  
Preparation Method ◽  
Catalytic Properties ◽  
Alloy Nanoparticles ◽  
Highly Active ◽  
Highly Dispersed ◽  
Pd Alloy ◽  
Protection Agent ◽  
Alloy Catalyst

This paper investigated Au-Pd/ZrO2alloy catalyst prepared by solution reduction method using NaBH4as reducing agent and L-lysine as protection agent. TEM, EDX, XRD, UV-Vis and XPS were employed to investigate the morphology, composition, dispersity and catalytic properties of the catalyst. The results show that Au-Pd/ZrO2alloy catalyst is uniform and highly dispersed. Furthermore, this preparation method leads to highly active Au-Pd/ZrO2alloy catalyst for the selective oxidation of benzyl alcohol.

Preparation of TiO2 (Au) Nanotubes by Hydrothermal Method for Photocatalytic Reduction of Cd2+ Ions

2014 ◽  
Vol 609-610 ◽  
pp. 375-381
Author(s):  
Chun Xiao Feng ◽  
Guang Qing Xu ◽  
Jun Lv ◽  
Zhi Xiang Zheng ◽  
Yu Cheng Wu
Keyword(s):  
Hydrothermal Method ◽  
Au Nanoparticles ◽  
Reduction Method ◽  
Photocatalytic Reduction ◽  
Photocatalytic Properties ◽  
Absorption Intensity ◽  
Reducing Ability ◽  
Highly Dispersed ◽  
Naoh Solution ◽  
Hydrothermal Reduction

Highly dispersed TiO2 nanotubes (TiO2-NTs) were synthesized via the reaction of anatase TiO2 powder with NaOH solution. Au nanoparticles of about 5 nm were deposited on the surface of TiO2-NTs with hydrothermal reduction method. The prepared nanocomposites were well characterized with TEM and XRD. Their photocatalytic properties and reducing ability were investigated by UV-Vis absorption and photocatalytic reduction of Cd2+ ions with different amount of TiO2-NTs and TiO2-NTs (Au) varying from 0.1g to 0.001g. The results from absorption patterns and AAS showed that the absorption intensity of TiO2-NTs (Au) was higher compared with that of TiO2-NTs. Moreover, the concentration of remanent Cd2+ (0.48mg/L) using TiO2-NTs (Au) was lower than that of Cd2+ (0.65mg/L) using TiO2-NTs.

Mn3O4 doped with highly dispersed Zr species: a new non-noble metal oxide with enhanced activity for three-way catalysis

2016 ◽  
Vol 40 (12) ◽  
pp. 10108-10115 ◽  
Author(s):  
Genyuan Zhao ◽  
Jing Li ◽  
Wenshuang Zhu ◽  
Xueqin Ma ◽  
Yonghua Guo ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Manganese Oxide ◽  
Noble Metal ◽  
Storage Capacity ◽  
Catalytic Properties ◽  
Oxygen Storage Capacity ◽  
Oxide Catalysts ◽  
Oxygen Storage ◽  
Highly Dispersed ◽  
Three Way Catalysis

Herein, we demonstrate the influence of zirconium species on promoting the oxygen storage capacity and three-way catalytic properties of zirconium-manganese oxide catalysts.

scholarly journals Using a non-reducing sugar in the green synthesis of gold and silver nanoparticles by the chemical reduction method

DYNA ◽  
2018 ◽  
Vol 85 (206) ◽  
pp. 69-78 ◽  
Author(s):  
Wilson Agudelo ◽  
Yuliet Montoya ◽  
John Bustamante
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Reducing Sugar ◽  
Chemical Reduction Method ◽  
Gold And Silver Nanoparticles ◽  
Uv Visible

El uso de compuestos químicos más biocompatibles y renovables para la obtención de nanopartículas metálicas con propiedades y características deseadas, se convierte en una ruta alternativa para la reducción de riesgos ambientales y del grado de incompatibilidad de estas estructuras al interactuar con modelos biológicos para su posible aplicación en el área de la salud. El propósito de este trabajo se centró en el uso de sacarosa, como agente reductor de nanopartículas de oro y plata al emplear diferentes volúmenes de hidróxido de sodio. Las nanopartículas obtenidas fueron caracterizadas mediante espectrometría UV-visible, microscopía electrónica de transmisión TEM y espectroscopia infrarroja por transformada de Fourier FTIR, la cual permitió determinar los plasmones de resonancia superficial, tamaños de partícula experimentales y teóricos, morfología y cambios estructurales en el agente reductor, así como la influencia del hidróxido de sodio en el proceso de síntesis. Los resultados obtenidos confirman la formación de nanopartículas de oro y plata mediante la previa formación de azúcares reductores. Así mismo, la oxidación del grupo funcional de la glucosa a sales de ácido carboxílico.

In situ synthesis of Au–Pd bimetallic nanoparticles on amine-functionalized SiO2 for the aqueous-phase hydrodechlorination of chlorobenzene

RSC Advances ◽  
2014 ◽  
Vol 4 (89) ◽  
pp. 48254-48259 ◽  
Author(s):  
Xinkui Wang ◽  
Qinggang Liu ◽  
Zihui Xiao ◽  
Xiao Chen ◽  
Chuan Shi ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Aqueous Phase ◽  
Reduction Method ◽  
Bimetallic Nanoparticles ◽  
In Situ Synthesis ◽  
High Dispersion ◽  
Amine Functionalized

The homogeneous Au–Pd NPs have been prepared through a facile in situ reduction method. The optimal AuPd1.0/SiO2 catalyst could complete the conversion of chlorobenzene due to the high dispersion and modified electronic properties of Pd.

In situ synthesis of Ni nanofibers via vacuum thermal reduction and their efficient catalytic properties for hydrogen generation

2018 ◽  
Vol 6 (24) ◽  
pp. 11370-11376 ◽  
Author(s):  
Qinglong Fu ◽  
Pan Yang ◽  
Jingchuan Wang ◽  
Hefang Wang ◽  
Lijun Yang ◽  
...  
Keyword(s):  
Reduction Method ◽  
Hydrogen Generation ◽  
Catalytic Properties ◽  
Decomposition Reaction ◽  
Thermal Reduction ◽  
In Situ Synthesis ◽  
Hydrazine Decomposition

Ni nanofibers have been prepared by a vacuum thermal reduction method, and further used as efficient catalysts for hydrogen generation from hydrous hydrazine decomposition reaction.

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