New lanthanide(iii) coordination polymers: synthesis, structural features, and catalytic activity in CO2 fixation

2017 ◽  
Vol 46 (47) ◽  
pp. 16426-16431 ◽  
Author(s):  
Cong Xu ◽  
Yan Liu ◽  
Li Wang ◽  
Jingxin Ma ◽  
Lizi Yang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Coordination Polymers ◽  
Co2 Fixation ◽  
Structural Features ◽  
Cycloaddition Reactions ◽  
Heterogeneous Catalytic

A series of Ln-CPs show highly heterogeneous catalytic activity for cycloaddition reactions with TON = 3920 and TOF = 326 h−1.

Hydrogen peroxide decomposition on a two-component CuO-Cr2O3 catalyst

1988 ◽  
Vol 53 (8) ◽  
pp. 1636-1646 ◽  
Author(s):  
Viliam Múčka ◽  
Kamil Lang
Keyword(s):  
Hydrogen Peroxide ◽  
Catalytic Activity ◽  
Extreme Values ◽  
Catalytic Properties ◽  
Active Components ◽  
Catalytic Systems ◽  
Heterogeneous Catalytic ◽  
Peroxide Decomposition ◽  
Two Component ◽  
Catalytically Active

Some physical and catalytic properties of the two-component copper(II)oxide-chromium(III)oxide catalyst with different content of both components were studied using the decomposition of the aqueous solution of hydrogen peroxide as a testing reaction. It has been found that along to both basic components, the system under study contains also the spinel structure CuCr2O4, chromate washable by water and hexavalent ions of chromium unwashable by water. The soluble chromate is catalytically active. During the first period of the reaction the equilibrium is being established in both homogeneous and heterogeneous catalytic systems. The catalytic activity as well as the specific surface area of the washed solid is a non-monotonous function of its composition. It seems highly probable that the extreme values of both these quantities are not connected with the detected admixtures in the catalytic system. The system under study is very insensitive with regard to the applied doses of gamma radiation. Its catalytic properties are changed rather significantly after the thermal treatment and particularly after the partial reduction to low degree by hydrogen. The observed changes of the catalytic activity of the system under study are very probably in connection with the changes of the valence state of the catalytically active components of the catalyst.

Construction of solvent-dependent self-assembled porous Ni(ii)-coordinated frameworks as effective catalysts for chemical transformation of CO2

RSC Advances ◽  
2016 ◽  
Vol 6 (109) ◽  
pp. 108010-108016 ◽  
Author(s):  
Zhen Zhou ◽  
Lu Yang ◽  
Yefei Wang ◽  
Cheng He ◽  
Tao Liu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Chemical Transformation ◽  
Self Assembly ◽  
Ambient Conditions ◽  
Heterogeneous Catalytic ◽  
Self Assembled

Two types of Ni(ii)-based coordinated frameworks have been solvothermally synthesized via solvent driven self-assembly, showing efficient heterogeneous catalytic activity toward cycloaddition of CO2 with epoxides under ambient conditions.

scholarly journals Ni(ii)-based coordination polymers for efficient electrocatalytic oxygen evolution reaction

RSC Advances ◽  
2018 ◽  
Vol 8 (67) ◽  
pp. 38562-38565 ◽  
Author(s):  
Zhi-Qiang Jiang ◽  
Yu-Feng Li ◽  
Xue-Jun Zhu ◽  
Jin Lu ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Coordination Polymer ◽  
Oxygen Evolution ◽  
Coordination Polymers ◽  
Oxygen Evolution Reaction ◽  
Fe Ions

An alkaline-stable cationic Ni(ii) coordination polymer showed remarkable oxygen evolution reaction (OER) catalytic activity due to capturing Fe ions.

scholarly journals Fabrication of Core-Shell Structural SiO2@H3[PM12O40] Material and Its Catalytic Activity

2014 ◽  
Vol 2014 ◽  
pp. 1-8
Author(s):  
Xin Yang ◽  
Junhai Wang ◽  
Qi Zhang ◽  
Xu Wang ◽  
Linlin Xu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalysts ◽  
Sol Gel ◽  
Operating Conditions ◽  
Core Shell ◽  
Catalytic Wet Air Oxidation ◽  
Air Oxidation ◽  
Wet Air Oxidation ◽  
Heterogeneous Catalytic ◽  
Room Condition

Through a natural tree grain template and sol-gel technology, the heterogeneous catalytic materials based on polyoxometalate compounds H3[PM12O40] encapsulating SiO2: SiO2@H3[PM12O40] (SiO2@PM12, M = W, Mo) with core-shell structure had been prepared. The structure and morphology of the core-shell microspheres were characterized by the XRD, IR spectroscopy, UV-Vis absorbance, and SEM. These microsphere materials can be used as heterogeneous catalysts with high activity and stability for catalytic wet air oxidation of pollutant dyes safranine T (ST) at room condition. The results show that the catalysts have excellent catalytic activity in treatment of wastewater containing 10 mg/L ST, and 94% of color can be removed within 60 min. Under different cycling runs, it is shown that the catalysts are stable under such operating conditions and the leaching tests show negligible leaching effect owing to the lesser dissolution.

A polyhedral oligomeric silsesquioxane (POSS)-bridged oxo-molybdenum Schiff base complex with enhanced heterogeneous catalytic activity in epoxidation

2014 ◽  
Vol 4 (4) ◽  
pp. 997-1004 ◽  
Author(s):  
Yan Leng ◽  
Jian Liu ◽  
Chenjun Zhang ◽  
Pingping Jiang
Keyword(s):  
Schiff Base ◽  
Catalytic Activity ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Schiff Base Complex ◽  
Efficient Catalyst ◽  
Butyl Hydroperoxide ◽  
Base Complex ◽  
Heterogeneous Catalytic ◽  
Oligomeric Silsesquioxane ◽  
Epoxidation Of Alkenes

A novel POSS-bridged oxo-molybdenum Schiff base complex was demonstrated to be a highly efficient catalyst for epoxidation of alkenes with aqueous tert-butyl hydroperoxide.

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