The Polymer-Protected Pd–Pt Bimetallic Clusters Having Catalytic Activity for Selective Hydrogenation of Diene. Preparation and EXAFS Investigation on the Structure

1990 ◽  
Vol 19 (5) ◽  
pp. 815-818 ◽  
Author(s):  
Naoki Toshima ◽  
Tetsu Yonezawa ◽  
Masafumi Harada ◽  
Kiyotaka Asakura ◽  
Yasuhiro Iwasawa
Keyword(s):  
Catalytic Activity ◽  
Selective Hydrogenation ◽  
Bimetallic Clusters

DNA-templated silver and silver-based bimetallic clusters with remarkable and sequence-related catalytic activity toward 4-nitrophenol reduction

2019 ◽  
Vol 55 (3) ◽  
pp. 373-376 ◽  
Author(s):  
Weijun Zhou ◽  
Youxing Fang ◽  
Jiangtao Ren ◽  
Shaojun Dong
Keyword(s):  
Catalytic Activity ◽  
Bimetallic Clusters ◽  
Schematic Representation ◽  
Bimetallic Nanoclusters ◽  
Nitrophenol Reduction

Illustrative pathways for the preparation of bimetallic nanoclusters using DNA-AgNC, and a schematic representation of the reduction of 4-NP to 4-AP in the presence of DNA-AgNC or bimetallic nanoclusters.

Selective hydrogenation of nitroarenes to amines by ligand-assisted Pd nanoparticles: influence of donor ligands on catalytic activity

2019 ◽  
Vol 43 (10) ◽  
pp. 4253-4260 ◽  
Author(s):  
Gauravjyoti D. Kalita ◽  
Podma P. Sarmah ◽  
Pallab Kr. Saikia ◽  
Lakshi Saikia ◽  
Pankaj Das
Keyword(s):  
Catalytic Activity ◽  
Selective Hydrogenation ◽  
Pd Nanoparticles ◽  
Donor Ligands

A simple and facile approach for the synthesis of tunable ligand-assisted Pd nanoparticles for selective hydrogenation of nitroarenes.

ChemInform Abstract: Pd Nanoparticles Dispersed on Solid Supports: Synthesis, Characterization and Catalytic Activity on Selective Hydrogenation of Olefins in Aqueous Media.

ChemInform ◽  
2011 ◽  
Vol 42 (16) ◽  
pp. no-no
Author(s):  
Minkyung Lim ◽  
Kathlia A. De Castro ◽  
Seungchan Oh ◽  
Kangsuk Lee ◽  
Young-Wook Chang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Selective Hydrogenation ◽  
Aqueous Media ◽  
Pd Nanoparticles ◽  
Solid Supports

scholarly journals Facile synthesis of biomass-based carbon materials nano-Ni-based catalysts and its application in selective hydrogenation of alkynes

2021 ◽  
Author(s):  
Jianguo liu ◽  
Jiangmin Sun ◽  
Longlong Ma
Keyword(s):  
Catalytic Activity ◽  
Selective Hydrogenation ◽  
Carbon Material ◽  
Large Scale ◽  
High Efficiency ◽  
Environmentally Friendly ◽  
Metal Catalyst ◽  
High Catalytic Activity ◽  
Chemical Research ◽  
Nickel Metal

The development of high efficiency, excellent selectivity, and super activity metal catalyst for chemical selective hydrogenation of alkynes to olefin is of great significance in the field of the chemical industry. At the same time, the development of a large number of available base metal catalysts for organic conversion remains an important objective of chemical research. Herein, we report a facile preparation of a simple, high catalytic activity, environmentally friendly, and inexpensive biomass carbon material supported nano-nickel catalyst from lignin residue. The entire preparation process of the catalyst is simple, reliable, economical, and environmentally friendly, which provides a potential utilization prospect for large-scale industrial applications of biomass-based carbon material catalysts. Biomass-based lignin residues can not only reduce the high oxidation state of nickel ions into nickel nanoparticles by the in-situ reducing gas generated during the calcination process, but the mesoporous structure of lignin residue also promotes the adsorption of nickel metal, which greatly improved the catalytic activity of biomass-based Ni-based catalysts. The simple synthetic green, cost-effective and sustainable biomass-based Ni-based catalyst shows good performance in the selective hydrogenation of phenylacetylene, reaching 97.2% conversion and 84.3% styrene selectivity, respectively.

Galvanic synthesis of AgPd bimetallic catalysts from Ag clusters dispersed in a silica matrix

2020 ◽  
Vol 10 (24) ◽  
pp. 8421-8428
Author(s):  
V. Sudheeshkumar ◽  
Maryam Alyari ◽  
Mahesh Gangishetty ◽  
Robert W. J. Scott
Keyword(s):  
Selective Hydrogenation ◽  
Bimetallic Catalysts ◽  
Silica Matrix ◽  
Bimetallic Clusters ◽  
Top Down ◽  
Hydrogenation Catalysts ◽  
Synthetic Strategy ◽  
Ag Clusters

AgPd bimetallic clusters dispersed in a silica matrix were made by a top down synthetic strategy and used as selective hydrogenation catalysts.

The ionic liquid microphase enhances the catalytic activity of Pd nanoparticles supported by a metal–organic framework

2015 ◽  
Vol 17 (8) ◽  
pp. 4178-4182 ◽  
Author(s):  
Li Peng ◽  
Jianling Zhang ◽  
Shuliang Yang ◽  
Buxing Han ◽  
Xinxin Sang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Liquid Metal ◽  
Selective Hydrogenation ◽  
Metal Organic Framework ◽  
Pd Nanoparticles ◽  
Mild Conditions ◽  
Metal Organic ◽  
Organic Framework

Here a Pd/ionic liquid/metal–organic framework catalyst is developed, which shows high activities in catalyzing the selective hydrogenation of alkynes under mild conditions.

Effects of Promoters on Properties of Cu-Zn-Al Catalyst for Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol

2011 ◽  
Vol 393-395 ◽  
pp. 1185-1188
Author(s):  
Chang You Li ◽  
Xiao Yan Li ◽  
Yi Fei Guo
Keyword(s):  
Catalytic Activity ◽  
Reaction Time ◽  
Catalytic Hydrogenation ◽  
Selective Hydrogenation ◽  
Reaction Rate ◽  
Steric Effect ◽  
Cinnamyl Alcohol ◽  
Active Centers ◽  
Hydrogenation Activity

Cu-Zn-Al catalyst was modified by the additives such as Ni and Mn, and the prepared catalyst was employed in the selective catalytic hydrogenation of cinnamaldehyde. The results showed that the addition of Ni could improve catalytic activity significantly, moreover, the improving effect was highest when Zn was replaced by Ni, simultaneously leading to excessive hydrogenation. The Cu-(5%)Mn-Zn-Al catalyst exhibited a higher selectivity of 93.6% for C = O bond to cinnamyl alcohol and hydrogenation activity of 33.0% conversion at 130°C under 1.0 MPa of H2 pressure with the reaction time of 1 h. TPR and XRD characterization showed that Mn promoter was favorable for the growth of Cu0 fine grains on the surface of catalyst, which not only led to steric effect which improved the selectivity for cinnamyl alcohol, but also reduced the numbers of active centers, consequently decreased the reaction rate.

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