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.

scholarly journals Facile fabrication of trepang-like CeO2@MnO2 nanocomposite with high catalytic activity for soot removal

2020 ◽  
Vol 515 ◽  
pp. 146013 ◽  
Author(s):  
Nengjie Feng ◽  
Zhongjian Zhu ◽  
Peng Zhao ◽  
Lei Wang ◽  
Hui Wan ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
High Catalytic Activity ◽  
Facile Fabrication

Single-atom transition metals supported on black phosphorene for electrochemical nitrogen reduction

Nanoscale ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 4903-4908 ◽  
Author(s):  
Kang Liu ◽  
Junwei Fu ◽  
Li Zhu ◽  
Xiaodong Zhang ◽  
Hongmei Li ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Transition Metals ◽  
Reduction Reaction ◽  
Single Atom ◽  
High Catalytic Activity ◽  
Nitrogen Reduction ◽  
Mild Conditions ◽  
Black Phosphorene

Electrochemical nitrogen reduction reaction (NRR) is a promising route to produce ammonia under mild conditions. Single-atom W supported on BP was screened as a promising electrocatalyst with high catalytic activity, stability, and selectively for NRR.

Tin sulfide and selenide clusters soluble in organic solvents with the core structures of Sn4S6 and Sn4Se6

2015 ◽  
Vol 44 (46) ◽  
pp. 19800-19804 ◽  
Author(s):  
Mingdong Zhong ◽  
Zhi Yang ◽  
Yafei Yi ◽  
Dongxiang Zhang ◽  
Kening Sun ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Organic Solvents ◽  
High Catalytic Activity ◽  
Tin Sulfide ◽  
Chalcogenide Clusters ◽  
Mild Conditions ◽  
The Core

Reactions of LSnCl (1) (L = N(2,6-iPr2C6H3)(SiMe3)) with sulfur and selenium, respectively under mild conditions yielded two tin chalcogenide clusters. The two products show high catalytic activity in ROP catalysis.

scholarly journals Low temperature oxidation of o-xylene with hydrogen peroxide in the presence of vanadium xerogels

2017 ◽  
pp. 26-31
Author(s):  
Nurlykyz Yesmurzaeva ◽  
Roza Tursunova ◽  
Bagadat Selenova ◽  
Daulet Kaldybekov ◽  
Sarkyt Kudaibergenov
Keyword(s):  
Hydrogen Peroxide ◽  
Catalytic Activity ◽  
Titanium Oxide ◽  
Oxidation Process ◽  
High Catalytic Activity ◽  
Vanadium Catalyst ◽  
Low Temperature Oxidation ◽  
Temperature Oxidation ◽  
Mild Conditions ◽  
Physicochemical Methods

The present work is dedicated to investigation of vanadium xerogels deposited on titanium oxide for the oxidation process of o-xylene by hydrogen peroxide under the mild conditions. The structure of deposited vanadium catalyst and sizes of vanadium xerogels nanoparticles were investigated by physicochemical methods. The nano-sized particles (5-8 nm) of xerogel vanadium deposited on titanium oxide exhibit high catalytic activity in the decomposition of hydrogen peroxide and in the oxidation of o-xylene by hydrogen peroxide under mild conditions.

scholarly journals An Efficient Hydration and Tandem Transfer Hydrogenation of Alkynes for the Synthesis of Alcohol in Water

Synthesis ◽  
2020 ◽  
Vol 52 (22) ◽  
pp. 3439-3445
Author(s):  
Lu Ouyang ◽  
Renshi Luo ◽  
Nianhua Luo ◽  
Yuhong Zhong ◽  
Ji-Tian Liu
Keyword(s):  
Catalytic Activity ◽  
Formic Acid ◽  
Efficient Method ◽  
Transfer Hydrogenation ◽  
High Catalytic Activity ◽  
Turnover Frequency ◽  
One Pot ◽  
Mild Conditions ◽  
Tandem Process ◽  
Metal Ligand

A practical and efficient method for the synthesis of alcohols in one pot from readily available alkynes via a tandem process by formic acid promoted hydration and metal-ligand bifunctional iridium-catalyzed­ transfer hydrogenation under mild conditions has been described. This transformation is simple, efficient, and can be performed with a variety of alkynes in good yields and with excellent stereoselectivities. Experimental results showed high catalytic activity, and turnover frequency (TOF) up to 25000. Importantly, this transformation can be conducted in water, and is thus green and environmentally friendly.

Molybdenum modified nickel phyllosilicates as a high performance bifunctional catalyst for deoxygenation of methyl palmitate to alkanes under mild conditions

2017 ◽  
Vol 19 (19) ◽  
pp. 4600-4609 ◽  
Author(s):  
Long Yan ◽  
Xinxin Liu ◽  
Jin Deng ◽  
Yao Fu
Keyword(s):  
Catalytic Activity ◽  
Methyl Palmitate ◽  
High Performance ◽  
Bifunctional Catalyst ◽  
High Catalytic Activity ◽  
Mild Conditions ◽  
Reaction Condition ◽  
Mo Doping

A new Mo doping Ni phyllosilicates catalyst (Mo–Ni@PSi) was synthesized and exhibited high catalytic activity under mild reaction condition for the deoxygenation of methyl palmitate.

scholarly journals Hybrid Catalysts for CO2 Conversion into Cyclic Carbonates

Catalysts ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 325 ◽  
Author(s):  
Carla Calabrese ◽  
Francesco Giacalone ◽  
Carmela Aprile
Keyword(s):  
Carbon Dioxide ◽  
Catalytic Activity ◽  
Scientific Community ◽  
Heterogeneous Catalysts ◽  
Metal Organic Framework ◽  
High Catalytic Activity ◽  
Co2 Conversion ◽  
Cyclic Carbonates ◽  
Hybrid Catalysts ◽  
Metal Organic

The conversion of carbon dioxide into valuable chemicals such as cyclic carbonates is an appealing topic for the scientific community due to the possibility of valorizing waste into an inexpensive, available, nontoxic, and renewable carbon feedstock. In this regard, last-generation heterogeneous catalysts are of great interest owing to their high catalytic activity, robustness, and easy recovery and recycling. In the present review, recent advances on CO2 cycloaddition to epoxide mediated by hybrid catalysts through organometallic or organo-catalytic species supported onto silica-, nanocarbon-, and metal–organic framework (MOF)-based heterogeneous materials, are highlighted and discussed.

Aerobic oxidation of 5-hydroxymethylfurfural into 2,5-furandicarboxylic acid in water under mild conditions

2015 ◽  
Vol 17 (3) ◽  
pp. 1610-1617 ◽  
Author(s):  
Bing Liu ◽  
Yongshen Ren ◽  
Zehui Zhang
Keyword(s):  
Catalytic Activity ◽  
Aerobic Oxidation ◽  
High Catalytic Activity ◽  
Reaction Conditions ◽  
Mild Conditions ◽  
Furandicarboxylic Acid

Pd/C@Fe3O4 catalyst showed high catalytic activity in the oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid under mild reaction conditions.

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...

scholarly journals Novel Cobalt Complex as an Efficient Catalyst for Converting CO2 into Cyclic Carbonates under Mild Conditions

Catalysts ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 951
Author(s):  
Wei Fan ◽  
Wen-Zhen Wang ◽  
Li Wang ◽  
Xin-Gang Jia ◽  
Lei-Lei Li ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Catalytic System ◽  
Catalytic Mechanism ◽  
Cobalt Complex ◽  
Catalytic Performance ◽  
High Catalytic Activity ◽  
Cyclic Carbonates ◽  
Efficient Catalyst ◽  
Metal Centers ◽  
Mild Conditions

Based on the ligand H2dpPzda (1), a novel cobalt complex [Co(H2dpPzda)(NCS)2]·CH3OH(2) has been synthesized and characterized. The Complex 2 exhibited excellent catalytic performance for converting CO2 into cyclic carbonates under mild conditions. For propylene oxide (PO) and CO2 synthesis of propylene carbonate (PC), the catalytic system showed a remarkable TOF as high as 29,200 h−1. The catalytic system also showed broad substrate scope of epoxide. Additionally, the catalyst could be recycled to maintain the integrity of the structure and remained equal to the level of its catalytic activity even after seven catalytic rounds. Additionally, a possible catalytic mechanism was proposed due to the high catalytic activity which might be owing to the synergism of Lewis acidic metal centers and N group.

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