Microwave-assisted deposition of a highly active cobalt catalyst on mesoporous silica for photochemical CO2 reduction

2017 ◽  
Vol 46 (32) ◽  
pp. 10721-10726 ◽  
Author(s):  
Thomas Fenton ◽  
Samantha Gillingham ◽  
Tong Jin ◽  
Gonghu Li
Keyword(s):  
Thermal Treatment ◽  
Mesoporous Silica ◽  
Cobalt Catalyst ◽  
Co2 Reduction ◽  
Silica Surfaces ◽  
Microwave Assisted ◽  
Highly Active

Uniform Co(iii) sites were obtained on the silica surfaces. Thermal treatment under vacuum resulted in significant changes in the properties of the Co(iii) sites.

Highly active and reusable silica-aerogel-supported platinum–cobalt bimetallic catalysts for the dehydrogenation of ammonia borane

RSC Advances ◽  
2016 ◽  
Vol 6 (113) ◽  
pp. 112109-112116 ◽  
Author(s):  
Pin-Ju Yu ◽  
Chia-Ching Hsieh ◽  
Po-Yu Chen ◽  
Biing-Jyh Weng ◽  
Yui Whei Chen-Yang
Keyword(s):  
Mesoporous Silica ◽  
Bimetallic Catalysts ◽  
Silica Aerogel ◽  
Chemical Reduction ◽  
Ammonia Borane ◽  
Microwave Assisted ◽  
Highly Active ◽  
Supported Platinum ◽  
Microwave Assisted Method

In this study, platinum–cobalt bimetallic catalysts supported on mesoporous silica aerogel (SAG), abbreviated as PCx/SAG,x= 1–6, were prepared by facile chemical reduction and a simple, efficient microwave-assisted method using Co and Pt precursors.

EDTA Lewis basic molecule as a highly active electrocatalyst for CO2 reduction to CH4

2021 ◽  
Author(s):  
Qian-Wang Chen ◽  
Minxue Huang ◽  
Shipeng Gong ◽  
Changlai Wang ◽  
Yang Yang ◽  
...  
Keyword(s):  
Co2 Reduction ◽  
Highly Active

scholarly journals Microwave-Assisted Fabrication of Mesoporous Silica-Calcium Phosphate Composites for Dental Application

Polymers ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 53
Author(s):  
Adrian Szewczyk ◽  
Adrianna Skwira ◽  
Marta Ginter ◽  
Donata Tajer ◽  
Magdalena Prokopowicz
Keyword(s):  
Calcium Phosphate ◽  
Mesoporous Silica ◽  
Octacalcium Phosphate ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Coating Solution ◽  
X Ray ◽  
Microwave Assisted ◽  
Calcium Orthophosphates ◽  
Different Types

Herein, the microwave-assisted wet precipitation method was used to obtain materials consisting of mesoporous silica (SBA-15) and calcium orthophosphates (CaP). Composites were prepared through immersion of mesoporous silica in different calcification coating solutions and then exposed to microwave radiation. The composites were characterized in terms of molecular structure, crystallinity, morphology, chemical composition, and mineralization potential by Fourier-transform infrared spectroscopy (FTIR), powder X-ray diffraction (XRD), and scanning electron microscopy equipped with energy-dispersive X-ray spectroscopy (SEM-EDX). The application of microwave irradiation resulted in the formation of different types of calcium orthophosphates such as calcium deficient hydroxyapatite (CDHA), octacalcium phosphate (OCP), and amorphous calcium phosphate (ACP) on the SBA-15 surface, depending on the type of coating solution. The composites for which the progressive formation of hydroxyapatite during incubation in simulated body fluid was observed were further used in the production of final pharmaceutical forms: membranes, granules, and pellets. All of the obtained pharmaceutical forms preserved mineralization properties.

Highly active and selective supported iron oxide nanoparticles in microwave-assisted N-alkylations of amines with alcohols

2010 ◽  
Vol 12 (7) ◽  
pp. 1281 ◽  
Author(s):  
Camino Gonzalez-Arellano ◽  
Kenta Yoshida ◽  
Rafael Luque ◽  
Pratibha L. Gai
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Microwave Assisted ◽  
Highly Active ◽  
Supported Iron

scholarly journals Inside Back Cover: Highly Active and Stable Palladium Nanoparticles Encapsulated in a Mesoporous Silica Yolk-Shell Nanoreactor for Suzuki-Miyaura Reactions (ChemCatChem 16/2015)

ChemCatChem ◽  
2015 ◽  
Vol 7 (16) ◽  
pp. 2542-2542 ◽  
Author(s):  
Fang Wei ◽  
Changyan Cao ◽  
Yongbin Sun ◽  
Shuliang Yang ◽  
Peipei Huang ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Palladium Nanoparticles ◽  
Back Cover ◽  
Highly Active

Polydopamine and Barbituric Acid Co-Modified Carbon Nitride Nanospheres for Highly Active and Selective Photocatalytic CO2 Reduction

2018 ◽  
Vol 2019 (15) ◽  
pp. 2058-2064 ◽  
Author(s):  
Mei Li ◽  
Shengbo Zhang ◽  
Xiao Liu ◽  
Jinyu Han ◽  
Xinli Zhu ◽  
...  
Keyword(s):  
Carbon Nitride ◽  
Barbituric Acid ◽  
Co2 Reduction ◽  
Highly Active

scholarly journals Trans Influence of Boryl Ligands in CO2 Hydrogenation on Ruthenium Complexes: Theoretical Prediction of Highly Active Catalysts for CO2 Reduction

Catalysts ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1356
Author(s):  
Tian Liu ◽  
Zhangyong Liu ◽  
Lipeng Tang ◽  
Jun Li ◽  
Zhuhong Yang
Keyword(s):  
Active Catalyst ◽  
Co2 Reduction ◽  
Nbo Analysis ◽  
Activation Free Energy ◽  
Highly Active ◽  
Trans Influence ◽  
Bond Property ◽  
Hydride Ligand ◽  
Calculation Results ◽  
Ruthenium Dihydride

In this work, we study the trans influence of boryl ligands and other commonly used non-boryl ligands in order to search for a more active catalyst than the ruthenium dihydride complex Ru(PNP)(CO)H2 for the hydrogenation of CO2. The theoretical calculation results show that only the B ligands exhibit a stronger trans influence than the hydride ligand and are along increasing order of trans influence as follows: –H < –BBr2 < –BCl2 ≈ –B(OCH)2 < –Bcat < –B(OCH2)2 ≈ –B(OH)2 < –Bpin < –B(NHCH2)2 < –B(OCH3)2 < –B(CH3)2 < –BH2. The computed activation free energy for the direct hydride addition to CO2 and the NBO analysis of the property of the Ru–H bond indicate that the activity of the hydride can be enhanced by the strong trans influence of the B ligands through the change in the Ru–H bond property. The function of the strong trans influence of B ligands is to decrease the d orbital component of Ru in the Ru–H bond. The design of a more active catalyst than the Ru(PNP)(CO)H2 complex is possible.

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