Catalytic wet oxidation of glucose as model compound of wastewater over copper/rare earth oxides catalysts

2020 ◽  
Vol 36 ◽  
pp. 101251
Author(s):  
Raghuraman Thayagaraja ◽  
Suet Ying Cheng ◽  
Mark I. Jones ◽  
Saeid Baroutian
Keyword(s):  
Rare Earth ◽  
Model Compound ◽  
Rare Earth Oxides ◽  
Wet Oxidation ◽  
Catalytic Wet Oxidation ◽  
Oxidation Of Glucose

Unprecedented Catalytic Wet Oxidation of Glucose to Succinic Acid Induced by the Addition ofn-Butylamine to a RuIIICatalyst

ChemSusChem ◽  
2016 ◽  
Vol 9 (17) ◽  
pp. 2307-2311 ◽  
Author(s):  
Iunia Podolean ◽  
Cristina Rizescu ◽  
Camelia Bala ◽  
Lucian Rotariu ◽  
Vasile I. Parvulescu ◽  
...  
Keyword(s):  
Succinic Acid ◽  
Wet Oxidation ◽  
Catalytic Wet Oxidation ◽  
Oxidation Of Glucose

Characteristics of Electron Structure and 4f Orbital of Rare Earths and Their Reinforcement of Wastewater Degradation

2014 ◽  
Vol 1022 ◽  
pp. 72-75
Author(s):  
Ju Chi Kuang
Keyword(s):  
Rare Earth ◽  
Hybrid Approach ◽  
Structural Features ◽  
Common Interest ◽  
Wet Oxidation ◽  
Catalytic Wet Oxidation ◽  
Re Elements ◽  
Further Development ◽  
Hybrid Orbitals

The reason why rare earth (RE) can play a role of strengthening catalytic degradation of wastewater has always been the topic of common interest for experimental and theoretical chemists. First it discussed the structural features and acts of RE elements, such as 4f orbitals whether to take part in bonding, their hybrid approach and the bonding ability of the hybrid orbitals. Then the paper took attention to how REs to reinforce catalysis for degradation of wastewater, including following aspects: REs' reinforcement on catalytic wet oxidation ability of wastewater, REs advancing H2O2catalytic oxidation ability to deal with wastewater, REs improving TiO2photolysis efficiency of organics, and REs further improving role of O3/TiO2/UV photocatalytic degradation for wastewater. Finally there were the conclusion and prospect. Looking to the future, the quantitative understaning the 4f orbital of RE contribution still need to rely on the further development of quantum chemistry theory and method.

Heat effects of wet oxidation of glucose: A biomass model compound

2015 ◽  
Vol 260 ◽  
pp. 864-874 ◽  
Author(s):  
M. Imbierowicz ◽  
M. Troszkiewicz ◽  
K. Piotrowska
Keyword(s):  
Model Compound ◽  
Wet Oxidation ◽  
Heat Effects ◽  
Oxidation Of Glucose

LASER SPECTROSCOPY OF RARE EARTH OXIDES

1987 ◽  
Vol 48 (C7) ◽  
pp. C7-611-C7-615
Author(s):  
C. LINTON
Keyword(s):  
Rare Earth ◽  
Laser Spectroscopy ◽  
Rare Earth Oxides

Effect of Rare Earth Oxides on Electrical Properties of Spark Plasma Sintered AlN Ceramics

2015 ◽  
Vol 30 (3) ◽  
pp. 267
Author(s):  
HUANG Lin-Yun ◽  
LI Chen-Hui ◽  
KE Wen-Ming ◽  
SHI Yu-Sheng ◽  
HE Zhi-Yong ◽  
...  
Keyword(s):  
Rare Earth ◽  
Electrical Properties ◽  
Rare Earth Oxides ◽  
Spark Plasma

A glance on rare earth oxides: importance, reserves, demand, applications, critical uncertainties, global economy, and zeta potential characterization

2020 ◽  
Vol 05 ◽  
Author(s):  
Silas Santos ◽  
Orlando Rodrigues ◽  
Letícia Campos
Keyword(s):  
Rare Earth ◽  
Zeta Potential ◽  
Sample Preparation ◽  
Rare Earths ◽  
Smart Materials ◽  
Global Economy ◽  
Materials Science ◽  
Functional Materials ◽  
Rare Earth Oxides ◽  
Interparticle Forces

Background: Innovation mission in materials science requires new approaches to form functional materials, wherein the concept of its formation begins in nano/micro scale. Rare earth oxides with general form (RE2O3; RE from La to Lu, including Sc and Y) exhibit particular proprieties, being used in a vast field of applications with high technological content since agriculture to astronomy. Despite of their applicability, there is a lack of studies on surface chemistry of rare earth oxides. Zeta potential determination provides key parameters to form smart materials by controlling interparticle forces, as well as their evolution during processing. This paper reports a study on zeta potential with emphasis for rare earth oxide nanoparticles. A brief overview on rare earths, as well as zeta potential, including sample preparation, measurement parameters, and the most common mistakes during this evaluation are reported. Methods: A brief overview on rare earths, including zeta potential, and interparticle forces are presented. A practical study on zeta potential of rare earth oxides - RE2O3 (RE as Y, Dy, Tm, Eu, and Ce) in aqueous media is reported. Moreover, sample preparation, measurement parameters, and common mistakes during this evaluation are discussed. Results: Potential zeta values depend on particle characteristics such as size, shape, density, and surface area. Besides, preparation of samples which involves electrolyte concentration and time for homogenization of suspensions are extremely valuable to get suitable results. Conclusion: Zeta potential evaluation provides key parameters to produce smart materials seeing that interparticle forces can be controlled. Even though zeta potential characterization is mature, investigations on rare earth oxides are very scarce. Therefore, this innovative paper is a valuable contribution on this field.

Mass Transfer Limited Wet Oxidation in Trickle-Bed Reactor

1998 ◽  
Vol 63 (11) ◽  
pp. 1938-1944 ◽  
Author(s):  
Vratislav Tukač ◽  
Jiří Vokál ◽  
Jiří Hanika
Keyword(s):  
Supported Catalyst ◽  
Reaction Rates ◽  
Gas Transfer ◽  
Wet Oxidation ◽  
Reactor Performance ◽  
Catalytic Wet Oxidation ◽  
Environmental Application ◽  
Trickle Bed Reactor ◽  
Fine Glass ◽  
Trickle Bed

Catalytic activity of CuO-supported catalyst in phenol oxidation, and the influence of reaction conditions, viz. temperature (125-170 °C), oxygen partial pressure (1-7 MPa) and liquid feed (30-760 ml h-1), in the continuous operation using 17.9 mm i.d. trickle-bed reactor is presented. The hydrodynamic impact on the three-phase trickle-bed reactor performance in an environmental application of catalytic wet oxidation was also investigated. The results of trickle-bed operation were strongly influenced by wetting efficiency. An insufficient catalyst wetting can be to compensated by filling the catalyst bed voids by fine glass spheres. In the case of the gas transfer limited reaction, a better wetting of the catalyst can lead to worse reactor performance due to lower reaction rates.

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