Pre-carbonized nitrogen-rich polytriazines for the controlled growth of silver nanoparticles: catalysts for enhanced CO2 chemical conversion at atmospheric pressure

2021 ◽  
Author(s):  
Jian Liu ◽  
xiaoyi zhang ◽  
bingyan wen ◽  
yipei li ◽  
jingjing wu ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Catalytic Activity ◽  
Heterogeneous Catalyst ◽  
Atmospheric Pressure ◽  
Chemical Conversion ◽  
High Catalytic Activity ◽  
Controlled Growth ◽  
Co2 Conversion ◽  
Terminal Alkynes ◽  
Efficient Heterogeneous Catalyst

High catalytic activity and sufficient durability are two unavoidable key indexes of an efficient heterogeneous catalyst for the direct carboxylation of terminal alkynes with CO2 conversion. Nitrogen-rich covalent triazine frameworks...

SO3H-functionalized metal organic frameworks: an efficient heterogeneous catalyst for the synthesis of quinoxaline and derivatives

RSC Advances ◽  
2016 ◽  
Vol 6 (41) ◽  
pp. 35135-35143 ◽  
Author(s):  
Radoelizo S. Andriamitantsoa ◽  
Jingjing Wang ◽  
Wenjun Dong ◽  
Hongyi Gao ◽  
Ge Wang
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalyst ◽  
Metal Organic Frameworks ◽  
Good Stability ◽  
High Catalytic Activity ◽  
General Applicability ◽  
Metal Organic ◽  
Efficient Heterogeneous Catalyst

The high dispersed –SO3H groups in the framework of MIL-101-Cr–NH–RSO3H ensure high catalytic activity for the condensation of 1,2-diamines with benzil. The catalyst exhibits good stability, general applicability and excellent recycling performance.

A highly efficient heterogeneous catalyst of cobalt-based coordination polymers for aerobic epoxidation of cyclohexene

CrystEngComm ◽  
2018 ◽  
Vol 20 (34) ◽  
pp. 5074-5078 ◽  
Author(s):  
Fan Yu
Keyword(s):  
Activation Energy ◽  
Catalytic Activity ◽  
Heterogeneous Catalyst ◽  
Coordination Polymers ◽  
Reaction Pathway ◽  
High Catalytic Activity ◽  
Highly Efficient ◽  
Epoxidation Of Cyclohexene ◽  
Efficient Heterogeneous Catalyst

A novel heterogeneous catalyst of cobalt-based coordination polymers using a tyrosine-based derivative has been successfully constructed, and it exhibits high catalytic activity in changing the reaction pathway and lowering the activation energy to 25.5 kJ mol−1.

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.

A copper nitride catalyst for the efficient hydroxylation of aryl halides under ligand-free conditions

2021 ◽  
Author(s):  
Hang Xu ◽  
Sho Yamaguchi ◽  
Takato Mitsudome ◽  
Tomoo Mizugaki
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalyst ◽  
Aryl Halides ◽  
High Catalytic Activity ◽  
Copper Nitride ◽  
Ligand Free

Copper nitride (Cu3N) was used as a heterogeneous catalyst for the hydroxylation of aryl halides under ligand-free conditions. The cubic Cu3N nanoparticles showed high catalytic activity, comparable to those of...

Industrial resin “INDION 130” modified with vanadyl cations as highly efficient heterogeneous catalyst for epoxidation of fatty compounds with TBHP as oxidant

2015 ◽  
Vol 39 (8) ◽  
pp. 5960-5965 ◽  
Author(s):  
Praveen K. Khatri ◽  
Mounika Aila ◽  
Jyoti Porwal ◽  
Savita Kaul ◽  
Suman L. Jain
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalyst ◽  
Cation Exchanger ◽  
Vanadium Catalyst ◽  
Highly Efficient ◽  
Efficient Heterogeneous Catalyst

Cation exchanger INDION 130 modified with vanadyl cations was found to be readily prepared and reusable and exhibited higher catalytic activity than the homogeneous oxo-vanadium catalyst for epoxidation of fatty compounds.

In situ and facile synthesis of silver nanoparticles on baby wipes and their applications in catalysis and SERS

RSC Advances ◽  
2016 ◽  
Vol 6 (6) ◽  
pp. 5016-5023 ◽  
Author(s):  
Bharat Baruah
Keyword(s):  
Silver Nanoparticles ◽  
Composite Materials ◽  
Heterogeneous Catalyst ◽  
Facile Synthesis ◽  
Sers Substrates ◽  
Efficient Heterogeneous Catalyst

Silver nanoparticles were immobilized on fibers to create composite materials. The composites are shown to be efficient heterogeneous catalyst with very good recyclability. These composite materials are also proven to be good SERS substrates.

Facile fabrication of a heterogeneous Co-modified pyridinecarboxaldehyde-polyethylenimine catalyst for efficient CO2 conversion under mild conditions

2020 ◽  
Vol 7 (5) ◽  
pp. 1140-1147
Author(s):  
Chao Liu ◽  
Li Yang ◽  
Jiaxu Zhang ◽  
Jianmin Sun
Keyword(s):  
Catalytic Activity ◽  
Ambient Temperature ◽  
High Catalytic Activity ◽  
Co2 Conversion ◽  
Mild Conditions ◽  
Active Metal ◽  
Facile Fabrication ◽  
Amine Groups

A heterogeneous Co-modified pyridinecarboxaldehyde-polyethylenimine catalyst with active metal sites and amine groups exhibited high catalytic activity for CO2 conversion under mild conditions, even at ambient temperature.

Zeolite Y nanoparticle assemblies with high activity in the direct hydration of terminal alkynes

RSC Advances ◽  
2016 ◽  
Vol 6 (74) ◽  
pp. 69822-69827 ◽  
Author(s):  
Shuling Xu ◽  
Zhi Yun ◽  
Yu Feng ◽  
Ting Tang ◽  
Zhongxue Fang ◽  
...  
Keyword(s):  
High Activity ◽  
Heterogeneous Catalyst ◽  
Zeolite Y ◽  
Nanoparticle Assembly ◽  
Terminal Alkynes ◽  
Macroporous Structure ◽  
Nanoparticle Assemblies ◽  
Highly Efficient ◽  
Efficient Heterogeneous Catalyst

A strong acidic zeolite Y nanoparticle assembly (HNANO-Y) with a micro–meso–macroporous structure was synthesized and used as a highly efficient heterogeneous catalyst for the hydration of alkynes to prepare ketone compounds.

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