Magnetic nanocomposite catalysts with high activity and selectivity for selective hydrogenation of ortho-chloronitrobenzene

2005 ◽  
Vol 229 (1) ◽  
pp. 114-118 ◽  
Author(s):  
J ZHANG ◽  
Y WANG ◽  
H JI ◽  
Y WEI ◽  
N WU ◽  
...  
Keyword(s):  
High Activity ◽  
Selective Hydrogenation ◽  
Magnetic Nanocomposite ◽  
Nanocomposite Catalysts

scholarly journals Bimetallic Au–Pd alloy nanoparticles supported on MIL-101(Cr) as highly efficient catalysts for selective hydrogenation of 1,3-butadiene

RSC Advances ◽  
2020 ◽  
Vol 10 (55) ◽  
pp. 33417-33427
Author(s):  
Lili Liu ◽  
Xiaojing Zhou ◽  
Luxia Guo ◽  
Shijuan Yan ◽  
Yingjie Li ◽  
...  
Keyword(s):  
High Activity ◽  
Selective Hydrogenation ◽  
Hydrogenation Reaction ◽  
Alloy Nanoparticles ◽  
Highly Efficient ◽  
Alloy Particles ◽  
Pd Alloy ◽  
Butadiene Hydrogenation

Bimetallic Au–Pd alloy particles stabilized by MIL-101(Cr) showed high activity and butene selectivity for 1,3-butadiene hydrogenation reaction.

Preparation and characterization of magnetic nanocomposite catalysts with double Au nanoparticle layers

RSC Advances ◽  
2015 ◽  
Vol 5 (121) ◽  
pp. 99697-99705 ◽  
Author(s):  
Zia Ur Rahman ◽  
Tingting Zhang ◽  
Siwen Cui ◽  
Daoai Wang
Keyword(s):  
Gold Layer ◽  
Magnetic Nanocomposite ◽  
Au Nanoparticle ◽  
Silver Layer ◽  
Excellent Activity ◽  
Nanocomposite Catalysts

Nanocomposite catalysts, with single and double gold layers, and with one gold layer and one silver layer were prepared through simple steps, and showed excellent activity in the reduction of nitrophenols.

Pd/TiN nanocomposite catalysts for selective hydrogenation of phenol and its derivatives

2016 ◽  
Vol 27 (9) ◽  
pp. 1500-1504 ◽  
Author(s):  
Hai-Feng Li ◽  
Qin-Sheng Zhang ◽  
Zeng-Bo Pang ◽  
Mi Tian ◽  
Ping Gao ◽  
...  
Keyword(s):  
Selective Hydrogenation ◽  
Nanocomposite Catalysts

Nanocatalysts based on dendrimers

2009 ◽  
Vol 81 (11) ◽  
pp. 2013-2023 ◽  
Author(s):  
Edward A. Karakhanov ◽  
Anton L. Maximov ◽  
Vitaliy A. Skorkin ◽  
Anna V. Zolotukhina ◽  
Alexey S. Smerdov ◽  
...  
Keyword(s):  
Metal Complexes ◽  
High Activity ◽  
Functional Groups ◽  
Selective Hydrogenation ◽  
Heterogeneous Catalysts ◽  
Pd Nanoparticles ◽  
Pamam Dendrimers ◽  
Surface Functional Groups ◽  
Wacker Oxidation ◽  
Coordination Bonds

Nanostructured regular materials based on dendrimers bound by covalent or coordination bonds between surface functional groups were synthesized. Bimetallic Cu(II) and Pd(II) metal complexes with nitrile-based dendrimers demonstrated high activity in Wacker oxidation of terminal alkenes along with good selectivity for methylketone formation. New heterogeneous catalysts based on Pd nanoparticles and cross-linked polypropylene imine (PPI) and polyamidoamine (PAMAM) dendrimers were prepared and examined for selective hydrogenation of unsaturated compounds.

scholarly journals Selective Hydrogenation of p-Chloronitrobenzene on Nanosized PdNiB Catalysts

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Yu-Wen Chen ◽  
Der-Shing Lee
Keyword(s):  
Particle Size ◽  
High Activity ◽  
Selective Hydrogenation ◽  
Electronic Effect ◽  
Ensemble Effect

A series of PdNiB bimetallic nanoalloy catalysts with various Pd contents was prepared. Pd was well dispersed in NiB. Even adding a small amount of Pd in NiB had a significant effect on activity and selectivity in hydrogenation of p-chloronitrobenzene (p-CNB) to p-chloroaniline (p-CAN). High activity and selectivity on PdNiB could be attributed to both ensemble effect and electronic effect. The particle size in PdNiB decreased with an increase in Pd content. Electron-enriched Ni could activate the polar-NO2 groups of p-CNB and depress the dehalogenation of p-CAN.

scholarly journals Selective Hydrogenation Properties of Ni-Based Bimetallic Catalysts

Eng ◽  
2022 ◽  
Vol 3 (1) ◽  
pp. 60-77
Author(s):  
Nobutaka Yamanaka ◽  
Shogo Shimazu
Keyword(s):  
High Activity ◽  
Selective Hydrogenation ◽  
Electronic Structures ◽  
Bimetallic Catalysts ◽  
Bimetallic Nanoparticles ◽  
Ni Catalyst ◽  
Electronic Effects ◽  
Catalytic Systems ◽  
Chemoselective Hydrogenation ◽  
Hydrogenation Reactions

Metallic Ni shows high activity for a variety of hydrogenation reactions due to its intrinsically high capability for H2 activation, but it suffers from low chemoselectivity for target products when two or more reactive functional groups are present on one molecule. Modification by other metals changes the geometric and electronic structures of the monometallic Ni catalyst, providing an opportunity to design Ni-based bimetallic catalysts with improved activity, chemoselectivity, and durability. In this review, the hydrogenation properties of these catalysts are described starting from the typical methods of preparing Ni-based bimetallic nanoparticles. In most cases, the reasons for the enhanced catalysis are discussed based on the geometric and electronic effects. This review provides new insights into the development of more efficient and well-structured non-noble metal-based bimetallic catalytic systems for chemoselective hydrogenation reactions.

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