Vapor-assisted crystallization of in situ glycine-modified UiO-66 with enhanced CO2 adsorption

2022 ◽  
Author(s):  
Yugo Fujimoto ◽  
Yasuhiro Shu ◽  
Yurika Taniguchi ◽  
Koji Miyake ◽  
Yoshiaki Uchida ◽  
...  
Keyword(s):  
Co2 Adsorption ◽  
Chemical Processes ◽  
Promising Material

UiO-66, composed of Zr6O4(OH)4 cluster and 1,4-benzene dicarboxylate, is a promising material for practical chemical processes because it is known as one of the most thermally and chemically stable Metal...

scholarly journals Diagnostics of Nitrogen-methane Atmospheric Glow Discharge Used for a Mimic of Prebiotic Atmosphere

2017 ◽  
Vol 4 (1) ◽  
pp. 83-86
Author(s):  
V. Mazánková ◽  
L. Töröková ◽  
D. Trunec ◽  
F. Krčma ◽  
S. Matejčík ◽  
...  
Keyword(s):  
Glow Discharge ◽  
Previous Investigation ◽  
Chemical Processes ◽  
Planetary Atmosphere ◽  
Gas Mixture ◽  
Prebiotic Atmosphere ◽  
Infra Red ◽  
Complex Chemistry ◽  
Life On Earth

The exploration of planetary atmosphere is being advanced by the exciting results of the Cassin-Huygens mission to Titan. The complex chemistry revealed in such atmospheres leading to the synthesis of bigger molecules is providing new insights into our understanding of how life on Earth developed. This work extends our previous investigation of nitrogen-methane (N<sub>2</sub>-CH<sub>4</sub>) atmospheric glow discharge for simulation chemical processes in prebiotic atmospheres. In presented experiments 2 % of water vapor were addet to nitrogen-methane gas mixture. Exhaust products of discharge in this gas mixture were in-situ analysed by Fourier Transform Infra Red spectroscopy (FTIR). The major products identified in spectra were: hydrogen cyanide, acetylene and acetonitrile.

In Situ Investigations into Chemical Processes by Electron-Energy-Resolved X-Ray Absorption Spectroscopy

2004 ◽  
Vol 116 (28) ◽  
pp. 3777-3781
Author(s):  
Antje Vollmer ◽  
John D. Lipp ◽  
Helmut Weiss ◽  
Rachel O'Malley ◽  
Trevor Rayment
Keyword(s):  
Electron Energy ◽  
Absorption Spectroscopy ◽  
Chemical Processes ◽  
X Ray ◽  
X Ray Absorption

Heat Transfer to Oil Shale in a Closely Spaced Bundle as an Approximation to a Packed Bed

1981 ◽  
Vol 103 (4) ◽  
pp. 307-317
Author(s):  
K. S. Udell ◽  
H. R. Jacobs
Keyword(s):  
Heat Transfer ◽  
Oil Shale ◽  
Tube Bundle ◽  
Packed Bed ◽  
Cylindrical Sample ◽  
Chemical Processes ◽  
Published Data ◽  
Thermal Processes ◽  
Gas Temperature

The heat transfer to a single cylindrical sample of oil shale in a staggered tube bundle was studied both numerically and experimentally in order to evaluate the thermal and chemical processes associated with the retorting of oil shale in packed beds particular to in-situ processing. The cylinders were subjected to constant gas temperatures and to gas temperature histories experienced in an actual combustion retort. The results of the numerical modeling were compared with the experimental data in order to evaluate the model’s performance. It was found that the model satisfactorily described the thermal processes experienced during the combustion retorting of oil shale within the limits of the accuracy of published data on oil shale thermal properties and chemical kinetics. Net heat transfer to cylindrical oil shale samples in a staggered bundle configuration was also calculated and was shown to nearly duplicate published data related to gas-solid heat transfer in a packed bed combustion retort.

In situ hydrothermal etching fabrication of CaTiO3 on TiO2 nanosheets with heterojunction effects to enhance CO2 adsorption and photocatalytic reduction

2019 ◽  
Vol 9 (2) ◽  
pp. 336-346 ◽  
Author(s):  
Jinjin Lin ◽  
Jiangshan Hu ◽  
Chengwei Qiu ◽  
Huijuan Huang ◽  
Lu Chen ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Co2 Adsorption ◽  
Photocatalytic Reduction ◽  
Tio2 Nanosheets

In situ fabricated CaTiO3/TiO2 heterojunction shows highly photocatalytic activity for reduction of CO2 to CO with H2O.

scholarly journals Microwave Mechanisms — The Energy/Heat Dichoto

2004 ◽  
Vol 12 (2) ◽  
pp. 18-23 ◽  
Author(s):  
Jose J. Galvez ◽  
Richard T. Giberson ◽  
Robert D. Cardiff
Keyword(s):  
Biological Sciences ◽  
Microwave Energy ◽  
Microwave Oven ◽  
Chemical Processes ◽  
Antigen Retrieval ◽  
Microwave Technology ◽  
Plastic Embedding ◽  
Speed Up ◽  
Histological Staining

The current use of microwave technology in science creates a dichotomy. Is it the heat or is it the energy? One entire branch of science, chemistry, uses microwave energy to apply heat to a broad range of chemical processes, under pressure, to produce the desired end-products quickly and efficiently (1). The biological sciences, surgical pathology in particular, have tried to adapt the microwave oven to speed up a broad range of processes: fixation, decalcification, antigen retrieval, tissue processing for paraffin and plastic embedding, and histological staining, including special stains, immunolabeling, and in situ hybridization (2). The biologists have assumed that they are also applying heat to speed processing. However, recent improvements in the microwave suggest that the energy is the critical variable (9). We have designed fixation experiments to test the two views.

Feasibility Study of Raman Spectroscopy as a Tool to Investigate the Liquid-Phase Chemistry of Aliphatic Organic Peroxides

1997 ◽  
Vol 51 (1) ◽  
pp. 74-80 ◽  
Author(s):  
Peter Jacob ◽  
Bernhard Wehling ◽  
Wieland Hill ◽  
Dieter Klockow
Keyword(s):  
Hydrogen Peroxide ◽  
Raman Spectroscopy ◽  
Liquid Phase ◽  
Chemical Processes ◽  
Organic Peroxides ◽  
Time Resolved ◽  
In Situ Investigation ◽  
Phase Chemistry ◽  
Kinetics Of

The described investigations are focused on peroxides occurring as products in atmospheric chemical processes, namely, hydrogen peroxide, methylhydroperoxide, hydroxymethylhydroperoxide, bis-(hydroxymethyl)peroxide, 1-hydroxyethylhydroperoxide, bis-(hydroxyethyl)peroxide, and hydroxymethylmethylperoxide. The compounds are identified and determined through the position and intensity of their characteristic O–O stretching bands in the range between 767 and 878 cm−1. Time-resolved Raman spectroscopy of peroxide solutions permits the in situ investigation of pathways and kinetics of reactions between peroxides and aldehydes.

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