Evaluation of the formation and carbon dioxide capture by Li4SiO4 using in situ synchrotron powder X-ray diffraction studies

2018 ◽  
Vol 20 (41) ◽  
pp. 26570-26579 ◽  
Author(s):  
M. L. Grasso ◽  
M. V. Blanco ◽  
F. Cova ◽  
J. A. González ◽  
P. Arneodo Larochette ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Capture ◽  
Shell Formation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Formation Pathway ◽  
Capture Capacity

The formation pathway of Li4SiO4 involves Li2SiO3 as an intermediate. Carbonation of Li4SiO4 under dynamical conditions retards the double shell formation, improving CO2 capture capacity.

scholarly journals Heteroleptic, polynuclear dysprosium(iii)-carbamato complexes through in situ carbon dioxide capture

2021 ◽  
Vol 50 (13) ◽  
pp. 4735-4742
Author(s):  
Sören Schlittenhardt ◽  
Eufemio Moreno-Pineda ◽  
Mario Ruben
Keyword(s):  
Carbon Dioxide ◽  
Magnetic Properties ◽  
Carbon Dioxide Capture ◽  
X Ray Diffraction ◽  
X Ray

We show the synthesis of three new dysprosium(iii)-carbamato complexes and describe their structures and magnetic properties through X-ray diffraction and SQUID measurements.

Statistical measures of spottiness in diffraction rings

2013 ◽  
Vol 47 (1) ◽  
pp. 166-172 ◽  
Author(s):  
Bridget Ingham
Keyword(s):  
Carbon Dioxide ◽  
Size Distribution ◽  
Intensity Variation ◽  
Incident Beam ◽  
Mean Square ◽  
X Ray Diffraction ◽  
X Ray ◽  
Statistical Measures ◽  
Diffraction Patterns

Spotty diffraction rings arise when the size distribution of crystallites illuminated by the incident beam includes crystallites that are large compared with the size of the beam. In this article, several statistical measures are used in conjunction to quantify spottiness and relate it to a crystallite size distribution: the number of peaks, the normalized root mean square intensity variation and the fractal dimension. These are demonstrated by way of example using synchrotron X-ray diffraction patterns collected duringin situcorrosion of mild steel in carbon dioxide-saturated aqueous brine.

Carbon Dioxide Capture and Dyes Separation in a Porous Framework with Anionic Sql Net

2014 ◽  
Vol 13 (05n06) ◽  
pp. 1460001
Author(s):  
Yanxi Tan ◽  
Ying Zhang ◽  
Jian Zhang ◽  
Yanjun Zheng
Keyword(s):  
Carbon Dioxide ◽  
Thermal Stability ◽  
Cation Exchange ◽  
Diffraction Pattern ◽  
Carbon Dioxide Capture ◽  
Dye Wastewater ◽  
Thermal Gravimetric ◽  
X Ray Diffraction ◽  
X Ray ◽  
Porous Framework

Presented here is a water-stable MOF material [ In (5- AIPA )2] ⋅ Me 2 NH 2(1; 5-AIPA = 5-Aminoisophthalic acid) built from the connecting of tetrahedral building units [ In ( COO )4]-. The sql net of compound 1 exhibits preferable chemical and thermal stability confirmed by thermal gravimetric analyses (TGA) and powder X-ray diffraction pattern (PXRD) measurements. The activated empty phase of 1a, as a good candidate material for CO 2 capture, shows a CO 2 uptake of 56.6 cm3/g and CH 4/ CO 2 selectivity in excess of 16.4. Remarkably, based on the cation exchange mechanism, 1a has excellent MB affinity and can adsorb MB over MO from water in two hours. The results further support the idea that the ionic MOFs can find more applications in the separation of ionic dyes for the purifying of dye wastewater.

An in situ, energy-dispersive x-ray diffraction study of natural gas conversion by carbon dioxide reforming

1993 ◽  
Vol 97 (13) ◽  
pp. 3355-3358 ◽  
Author(s):  
A. T. Ashcroft ◽  
A. K. Cheetham ◽  
R. H. Jones ◽  
S. Natarajan ◽  
J. M. Thomas ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Natural Gas ◽  
Diffraction Study ◽  
Energy Dispersive ◽  
X Ray Diffraction ◽  
Carbon Dioxide Reforming ◽  
Natural Gas Conversion ◽  
X Ray ◽  
Gas Conversion

scholarly journals Atmospheric Carbon Dioxide Capture as Carbonate into a Luminescent Trinuclear Cd(II) Complex with Tris(2-aminoethyl)amine Tripodal Ligand

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1480
Author(s):  
Augustin M. Mădălan
Keyword(s):  
Carbon Dioxide ◽  
Co2 Capture ◽  
Atmospheric Carbon Dioxide ◽  
Carbon Dioxide Capture ◽  
Luminescent Properties ◽  
X Ray Diffraction ◽  
Tripodal Ligand ◽  
X Ray ◽  
Amine Ligand ◽  
Carbonate Anion

Spontaneous atmospheric CO2 capture as carbonate anion occurred in the synthesis of a trinuclear Cd(II) complex with tris(2-aminoethyl)amine ligand. In reaction two types of compounds were obtained and structurally characterized by X-ray diffraction on a single crystal: initially [{Cd(tren)}3(tren)](ClO4)6·2H2O (1) and subsequently [{Cd(tren)}3(tren)][{Cd(tren)}3(µ3-ηCO3)](ClO4)10 (2). The carbonate anion replaces partially the bridging tren molecule and coordinates in a µ3 fashion. The luminescent properties of the compounds were investigated.

The Use of Advanced Analytical Techniques for Characterization of the Chemical, Physical, and Crystallographic Nature of a Surface

1973 ◽  
Vol 31 ◽  
pp. 132-133 ◽  
Author(s):  
R. E. Herfert
Keyword(s):  
Surface Characterization ◽  
Analytical Techniques ◽  
X Ray Diffraction ◽  
Depth Of Penetration ◽  
X Ray ◽  
The Past ◽  
Transmission Electron ◽  
Scanning Electron

Studies of the nature of a surface, either metallic or nonmetallic, in the past, have been limited to the instrumentation available for these measurements. In the past, optical microscopy, replica transmission electron microscopy, electron or X-ray diffraction and optical or X-ray spectroscopy have provided the means of surface characterization. Actually, some of these techniques are not purely surface; the depth of penetration may be a few thousands of an inch. Within the last five years, instrumentation has been made available which now makes it practical for use to study the outer few 100A of layers and characterize it completely from a chemical, physical, and crystallographic standpoint. The scanning electron microscope (SEM) provides a means of viewing the surface of a material in situ to magnifications as high as 250,000X.

Nano-Folded Gold Electrocatalysts Enhance the Selectivity of Carbon Dioxide Reduction

2019 ◽  
Author(s):  
Kam Sang Kwok ◽  
Yuxuan Wang ◽  
Michael Cao ◽  
Hao Shen ◽  
Weinan Xu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Mass Transport ◽  
Gold Film ◽  
X Ray Diffraction ◽  
Thin Gold Film ◽  
Faradaic Efficiency ◽  
X Ray ◽  
Transmission Electron ◽  
Carbon Monoxide Formation ◽  
Catalytic Interfaces

<p>The local structure and geometry of catalytic interfaces can influence the selectivity of chemical reactions. Here, using a pre-strained polymer, we uniaxially compress a thin gold film to form a nano-folded catalyst. We observe two kinds of folds and can tune the ratio of loose to tight folds by varying the extent of pre-strain in the polymer. We characterize the nano-folded catalysts using x-ray diffraction, scanning, and transmission electron microscopy. We observe grain reorientation and coarsening in the nano-folded gold catalysts. Electroreduction of carbon dioxide with these nano-folded catalysts reveals an enhancement of Faradaic efficiency for carbon monoxide formation by a factor of about four. This result suggests that electrolyte mass transport limitations and an increase of the local pH in the tight folds of the catalyst outweigh the effects of alterations in grain characteristics. Together, our studies demonstrate that nano-folded geometries can significantly alter grain characteristics, mass transport, and catalytic selectivity. </p>

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