Synthesis, structure and catalytic activity of a gold(i) complex containing 1,2-bis(diphenylphosphino)benzene monoxide

2014 ◽  
Vol 43 (43) ◽  
pp. 16300-16309 ◽  
Author(s):  
Christine Hahn ◽  
Leticia Cruz ◽  
Amanda Villalobos ◽  
Liliana Garza ◽  
Samuel Adeosun
Keyword(s):  
Catalytic Activity ◽  
Active Catalyst ◽  
Highly Active

A bisphosphine monoxide gold(i) complex, synthesized by a new protocol, is a highly active catalyst for the hydroarylation of ethylpropiolate.

scholarly journals Monodisperse AgPd alloy nanoparticles as a highly active catalyst towards the methanolysis of ammonia borane for hydrogen generation

RSC Advances ◽  
2016 ◽  
Vol 6 (107) ◽  
pp. 105940-105947 ◽  
Author(s):  
Daohua Sun ◽  
Pengyao Li ◽  
Bin Yang ◽  
Yan Xu ◽  
Jiale Huang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Room Temperature ◽  
Hydrogen Generation ◽  
Active Catalyst ◽  
Ammonia Borane ◽  
Alloy Nanoparticles ◽  
Highly Active

Monodisperse AgPd alloy NPs showed remarkable catalytic activity towards the generation of hydrogen from the methanolysis of ammonia borane at room temperature.

Hierarchical macrotube/mesopore carbon decorated with mono-dispersed Ag nanoparticles as a highly active catalyst

2015 ◽  
Vol 17 (4) ◽  
pp. 2515-2523 ◽  
Author(s):  
Tuo Ji ◽  
Long Chen ◽  
Michael Schmitz ◽  
Forrest Sheng Bao ◽  
Jiahua Zhu
Keyword(s):  
Catalytic Activity ◽  
Porous Carbon ◽  
Ag Nanoparticles ◽  
Active Catalyst ◽  
Carbon Substrate ◽  
Reduction Reactions ◽  
Highly Active ◽  
Nitrophenol Reduction

Mono-dispersed Ag nanoparticles supported on hierarchical macrotube/mesopore porous carbon substrate show excellent catalytic activity in nitrophenol reduction reactions.

Palladium nanoparticles encapsulated inside the pores of a metal–organic framework as a highly active catalyst for carbon–carbon cross-coupling

RSC Advances ◽  
2014 ◽  
Vol 4 (97) ◽  
pp. 54487-54493 ◽  
Author(s):  
Ningzhao Shang ◽  
Shutao Gao ◽  
Xin Zhou ◽  
Cheng Feng ◽  
Zhi Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Palladium Nanoparticles ◽  
Active Catalyst ◽  
Metal Organic Framework ◽  
Cross Coupling ◽  
High Catalytic Activity ◽  
Coupling Reactions ◽  
Highly Active ◽  
Metal Organic ◽  
Organic Framework

Palladium nanoparticles were successfully encapsulated in the cages of MIL-101, which exhibited high catalytic activity toward the C–C coupling reactions.

Phenanthroline-based metal–organic frameworks for Fe-catalyzed Csp3–H amination

2017 ◽  
Vol 201 ◽  
pp. 303-315 ◽  
Author(s):  
Nathan C. Thacker ◽  
Pengfei Ji ◽  
Zekai Lin ◽  
Ania Urban ◽  
Wenbin Lin
Keyword(s):  
Catalytic Activity ◽  
Active Catalyst ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Organic Transformations ◽  
Organic Azides ◽  
Highly Active ◽  
Earth Abundant ◽  
Metal Organic ◽  
Highly Porous

We report here the synthesis of a robust and highly porous Fe-phenanthroline-based metal–organic framework (MOF) and its application in catalyzing challenging inter- and intramolecular C–H amination reactions. For the intermolecular amination reactions, a FeBr2-metalated MOF selectively functionalized secondary benzylic and allylic C–H bonds. The intramolecular amination reactions utilizing organic azides as the nitrene source required the reduction of the FeBr2-metalated MOF with NaBHEt3 to generate the active catalyst. For both reactions, Fe or Zr leaching was less than 0.1%, and MOFs could be recycled and reused with no loss in catalytic activity. Furthermore, MOF catalysts were significantly more active than the corresponding homogeneous analogs. This work demonstrates the great potential of MOFs in generating highly active, recyclable, and reusable earth abundant metal catalysts for challenging organic transformations.

Triggering highly stable catalytic activity of metallic titanium for hydrogen storage in NaAlH4 by preparing ultrafine nanoparticles

2019 ◽  
Vol 7 (9) ◽  
pp. 4651-4659 ◽  
Author(s):  
Xin Zhang ◽  
Zhuanghe Ren ◽  
Xuelian Zhang ◽  
Mingxia Gao ◽  
Hongge Pan ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Storage ◽  
Amorphous Carbon ◽  
Active Catalyst ◽  
Metallic Titanium ◽  
Highly Active

Ultrafine Ti nanoparticles (3–5 nm) supported on amorphous carbon are prepared as a highly active catalyst for hydrogen storage in NaAlH4.

Self-assembly of amine-functionalized gold nanoparticles on phosphonate-functionalized graphene nanosheets: a highly active catalyst for the reduction of 4-nitrophenol

RSC Advances ◽  
2015 ◽  
Vol 5 (107) ◽  
pp. 88045-88051 ◽  
Author(s):  
Xueqing Gao ◽  
Guangrui Xu ◽  
Yan Zhao ◽  
Shuni Li ◽  
Feng Shi ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Self Assembly ◽  
Active Catalyst ◽  
Graphene Nanosheets ◽  
Functionalized Graphene ◽  
Functionalized Gold Nanoparticles ◽  
Highly Active ◽  
Amine Functionalized

Au-NP@NH2 can effectively self-assemble on the surface of GNS-PO3H2 and show excellent catalytic activity in the reduction of 4-nitrophenol.

Transition metal modification and carbon vacancy promoted Cr2CO2(MXenes): a new opportunity for a highly active catalyst for the hydrogen evolution reaction

2018 ◽  
Vol 6 (42) ◽  
pp. 20956-20965 ◽  
Author(s):  
Yu-Wen Cheng ◽  
Jian-Hong Dai ◽  
Yu-Min Zhang ◽  
Yan Song
Keyword(s):  
Catalytic Activity ◽  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Active Catalyst ◽  
Carbon Vacancy ◽  
Highly Active

Transition metal (TM) modification and carbon vacancy engineering promoted the hydrogen evolution reaction (HER) catalytic activity of Cr2CO2.

Vanadium oxide nanoparticles supported on cubic carbon nanoboxes as highly active catalyst precursors for hydrogen storage in MgH2

2018 ◽  
Vol 6 (33) ◽  
pp. 16177-16185 ◽  
Author(s):  
Zeyi Wang ◽  
Zhuanghe Ren ◽  
Ni Jian ◽  
Mingxia Gao ◽  
Jianjiang Hu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Storage ◽  
Vanadium Oxide ◽  
Active Catalyst ◽  
Oxide Nanoparticles ◽  
High Catalytic Activity ◽  
Highly Active

Vanadium oxide nanoparticles supported on cubic carbon nanoboxes with high catalytic activity for hydrogen storage in MgH2 were successfully synthesized.

Deactivation of arenetitanium(II) bromoalane complexes in the cyclotrimerization of butadiene

1986 ◽  
Vol 51 (12) ◽  
pp. 2751-2759 ◽  
Author(s):  
Jindřich Poláček ◽  
Helena Antropiusová ◽  
Lidmila Petrusová ◽  
Karel Mach
Keyword(s):  
Catalytic Activity ◽  
Catalytic System ◽  
Model System ◽  
Highly Active ◽  
Catalytic Stability

The C6H6.Ti(II)(AlBr4)2 (Ib) catalyst deactivates during the butadiene cyclotrimerization to give a solid containing all titanium (mostly as TiBr3) and a mixture of AlBr3 and RAlBr2 compounds dissolved in benzene. The residual cationic catalytic activity of the deactivated Ib system is due to presence of AlBr3. In contrast to TiCl3, the deactivated Ib system and the model system TiBr3 + AlBr3 are not activated by the addition of EtAlCl2 in the presence of butadiene: the highly active benzenetitanium(II) system is re-constituted only after reduction of TiBr3 with Et3Al followed by the addition of EtAlCl2. The addition of Et2AlBr to Ib accelerates the deactivation of the system. Deactivation products of this system contain mainly Ti(II) species which forms benzenetitanium(II) catalytic system after addition of EtAlCl2. All the EtAlCl2 reactivated systems produce (Z, E, E)-1,5,9-cyclododecatriene with high catalytic stability and considerable selectivity (>90%). This behaviour points to the catalysis by benzenetitanium(II) chloroalane complexes containing only low amount of bromine atoms and ethyl groups.

scholarly journals Highly Dispersed Pd Species Supported on CeO2 Catalyst for Lean Methane Combustion: The Effect of the Occurrence State of Surface Pd Species on the Catalytic Activity

Catalysts ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 772
Author(s):  
Yanxiong Liu ◽  
Changhua Hu ◽  
Longchun Bian
Keyword(s):  
Catalytic Activity ◽  
Oxygen Vacancies ◽  
Methane Combustion ◽  
Pd Nanoparticles ◽  
High Concentration ◽  
Ch4 Combustion ◽  
Highly Active ◽  
Δ Phase ◽  
Occurrence State ◽  
Comprehensive Characterization

The correlation between the occurrence state of surface Pd species of Pd/CeO2 for lean CH4 combustion is investigated. Herein, by using a reduction-deposition method, we have synthesized a highly active 0.5% PdO/CeO2-RE catalyst, in which the Pd nanoparticles are evenly dispersed on the CeO2 nanorods CeO2-R. Based on comprehensive characterization, we have revealed that the uniformly dispersed Pd nanoparticles with a particle size distribution of 2.3 ± 0.6 nm are responsible for the generation of PdO and PdxCe1−xO2−δ phase with –Pd2+–O2−–Ce4+– linkage, which can easily provide oxygen vacancies and facilitate the transfer of reactive oxygen species between the CeO2-R and Pd species. As a consequence, the remarkable catalytic activity of 0.5% Pd/CeO2-RE is related to the high concentration of PdO species on the surface of the catalyst and the synergistic interaction between the Pd species and the CeO2 nanorod.

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