Monodisperse Pd Nanotetrahedrons on Ultrathin MoO3–x Nanosheets as Excellent Heterogeneous Catalyst for Chemoselective Hydrogenation Reactions

2017 ◽  
Vol 121 (49) ◽  
pp. 27528-27534 ◽  
Author(s):  
Xiao Zhou ◽  
Hong-Yan Zhou ◽  
Tuck-Yun Cheang ◽  
Zhi-Wei Zhao ◽  
Cong-Cong Shen ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Chemoselective Hydrogenation ◽  
Hydrogenation Reactions

scholarly journals Immobilization of an Iridium(I)-NHC-Phosphine Catalyst for Hydrogenation Reactions under Batch and Flow Conditions

Catalysts ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 656
Author(s):  
Henrietta Kovács ◽  
Krisztina Orosz ◽  
Gábor Papp ◽  
Ferenc Joó ◽  
Henrietta Horváth
Keyword(s):  
Catalytic Activity ◽  
Ion Exchange ◽  
Heterogeneous Catalyst ◽  
Aqueous Phase ◽  
Levulinic Acid ◽  
Flow Reactor ◽  
High Catalytic Activity ◽  
Flow Conditions ◽  
Hydrogenation Reactions ◽  
Excellent Selectivity

Na2[Ir(cod)(emim)(mtppts)] (1) with high catalytic activity in various organic- and aqueous-phase hydrogenation reactions was immobilized on several types of commercially available ion-exchange supports. The resulting heterogeneous catalyst was investigated in batch reactions and in an H-Cube flow reactor in the hydrogenation of phenylacetylene, diphenylacetylene, 1-hexyne, and benzylideneacetone. Under proper conditions, the catalyst was highly selective in the hydrogenation of alkynes to alkenes, and demonstrated excellent selectivity in C=C over C=O hydrogenation; furthermore, it displayed remarkable stability. Activity of 1 in hydrogenation of levulinic acid to γ-valerolactone was also assessed.

Microwave-Assisted Chemoselective Hydrogenation Reactions Incorporating Hydrogen as Reducing Agent

2011 ◽  
Vol 34 (3) ◽  
pp. 445-451 ◽  
Author(s):  
C. Schmöger ◽  
T. Gallert ◽  
A. Stolle ◽  
B. Ondruschka ◽  
W. Bonrath
Keyword(s):  
Reducing Agent ◽  
Microwave Assisted ◽  
Chemoselective Hydrogenation ◽  
Hydrogenation Reactions

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.

scholarly journals Pd immobilized on magnetic chitosan as a heterogeneous catalyst for acetalization and hydrogenation reactions

2013 ◽  
Vol 279 ◽  
pp. 360-366 ◽  
Author(s):  
Jinghui Zhou ◽  
Zhengping Dong ◽  
Honglei Yang ◽  
Zhiqiang Shi ◽  
Xingchun Zhou ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Magnetic Chitosan ◽  
Hydrogenation Reactions

A novel nano-palladium catalyst for continuous-flow chemoselective hydrogenation reactions

2017 ◽  
Vol 94 ◽  
pp. 65-68 ◽  
Author(s):  
Ilona Goszewska ◽  
Damian Giziński ◽  
Małgorzata Zienkiewicz-Machnik ◽  
Dmytro Lisovytskiy ◽  
Kostyantyn Nikiforov ◽  
...  
Keyword(s):  
Palladium Catalyst ◽  
Continuous Flow ◽  
Chemoselective Hydrogenation ◽  
Hydrogenation Reactions

Transfer hydrogenation of unsaturated bonds in the absence of base additives catalyzed by a cobalt-based heterogeneous catalyst

2015 ◽  
Vol 51 (12) ◽  
pp. 2331-2334 ◽  
Author(s):  
Jilan Long ◽  
Ying Zhou ◽  
Yingwei Li
Keyword(s):  
Heterogeneous Catalyst ◽  
Transfer Hydrogenation ◽  
Catalytic Transfer Hydrogenation ◽  
Highly Active ◽  
Hydrogenation Reactions ◽  
Catalytic Transfer

A novel non-noble Co@C–N system for catalytic transfer hydrogenation reactions is developed. The heterogeneous Co@C–N catalysts are highly active and selective in the hydrogenation of a variety of unsaturated bonds with isopropanol in the absence of base additives.

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