Azacalix[7]arene Heptamethyl Ether: Preparation, Nanochannel Crystal Structure, and Selective Adsorption of Carbon Dioxide†

2008 ◽  
Vol 73 (19) ◽  
pp. 7748-7755 ◽  
Author(s):  
Hirohito Tsue ◽  
Kazuhiro Matsui ◽  
Koichi Ishibashi ◽  
Hiroki Takahashi ◽  
Satoshi Tokita ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Carbon Dioxide ◽  
Selective Adsorption

scholarly journals Investigation into the Re-Arrangement of Copper Foams Pre- and Post-CO2 Electrocatalysis

Chemistry ◽  
2021 ◽  
Vol 3 (3) ◽  
pp. 687-703
Author(s):  
Jennifer A. Rudd ◽  
Sandra Hernandez-Aldave ◽  
Ewa Kazimierska ◽  
Louise B. Hamdy ◽  
Odin J. E. Bain ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Carbon Dioxide ◽  
Carbon Capture ◽  
Surface Composition ◽  
Structural Rearrangement ◽  
Copper Electrode ◽  
Copper Electrodes ◽  
Porous Copper ◽  
Chemical Products ◽  
Co2 Electrolysis

The utilization of carbon dioxide is a major incentive for the growing field of carbon capture. Carbon dioxide could be an abundant building block to generate higher-value chemical products. Herein, we fabricated a porous copper electrode capable of catalyzing the reduction of carbon dioxide into higher-value products, such as ethylene, ethanol and propanol. We investigated the formation of the foams under different conditions, not only analyzing their morphological and crystal structure, but also documenting their performance as a catalyst. In particular, we studied the response of the foams to CO2 electrolysis, including the effect of urea as a potential additive to enhance CO2 catalysis. Before electrolysis, the pristine and urea-modified foam copper electrodes consisted of a mixture of cuboctahedra and dendrites. After 35 min of electrolysis, the cuboctahedra and dendrites underwent structural rearrangement affecting catalysis performance. We found that alterations in the morphology, crystallinity and surface composition of the catalyst were conducive to the deactivation of the copper foams.

Electrostatically‐driven Selective Adsorption of Carbon Dioxide over Acetylene in an Ultramicroporous Material

2021 ◽  
Author(s):  
Banglin Chen ◽  
Yi Xie ◽  
Hui Cui ◽  
Hui Wu ◽  
Rui-Biao Lin ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Selective Adsorption

Selective adsorption behaviour of carbon dioxide in OH-functionalized metal–organic framework materials

CrystEngComm ◽  
2017 ◽  
Vol 19 (36) ◽  
pp. 5346-5350 ◽  
Author(s):  
Jinjie Qian ◽  
Jinni Shen ◽  
Qipeng Li ◽  
Yue Hu ◽  
Shaoming Huang
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Bond ◽  
Selective Adsorption ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Adsorption Behaviour ◽  
Weak Hydrogen Bond ◽  
Oh Groups ◽  
Framework Materials ◽  
Metal Organic

The theoretically optimal adsorption locations in hydroxyl (OH)-decorated metal–organic frameworks show that the captured CO2 molecules interact with the cis-μ2-OH groups in an end-on mode, which shows a moderate to weak hydrogen bond.

Selective adsorption of carbon dioxide over nitrogen on calcined synthetic hectorites with tailor-made porosity

2009 ◽  
Vol 46 (1) ◽  
pp. 109-113 ◽  
Author(s):  
Radheshyam R. Pawar ◽  
Hasmukh A. Patel ◽  
Govind Sethia ◽  
Hari C. Bajaj
Keyword(s):  
Carbon Dioxide ◽  
Selective Adsorption

Synthese und Struktur des Ammoniumsesquicarbonat Monohydrates (NH4)4[H2(CO3)3] ·H2O

2003 ◽  
Vol 58 (6) ◽  
pp. 511-513 ◽  
Author(s):  
Günter Margrafa ◽  
Hans-Wolfram Lernera ◽  
Michael Bolteb ◽  
Matthias Wagnera
Keyword(s):  
Crystal Structure ◽  
Carbon Dioxide ◽  
Structure Analysis ◽  
Crystal Structure Analysis ◽  
X Ray

The ammonium sesquicarbonate monohydrate (NH4)4[H2(CO3)3] · H2O is obtained from the reaction of hexamethyldisilazane with carbon dioxide in tetrahydrofuran in the presence of water. The structure of (NH4)4[H2(CO3)3] · H2O has been determined by X-ray crystal structure analysis.

scholarly journals Crystal Structure and Thermal Behavior of SbC2O4OH and SbC2O4OD

Inorganics ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 21
Author(s):  
Holger Kohlmann ◽  
Anne Rauchmaul ◽  
Simon Keilholz ◽  
Alexandra Franz
Keyword(s):  
Crystal Structure ◽  
Carbon Dioxide ◽  
Carbon Oxide ◽  
Antimony Oxide ◽  
Mirror Plane ◽  
Endothermic Reaction ◽  
Oh Groups ◽  
Synchrotron Beam ◽  
Potential Precursor ◽  
Ternary Oxides

The order of OH groups in the crystal structure of SbC2O4OH, a potential precursor in the synthesis of ternary oxides, was debated. Neutron diffraction on the deuteride SbC2O4OD revealed disordered OD groups with half occupation for deuterium atoms on either side of a mirror plane (SbC2O4OD at T = 298(1) K: Pnma, a = 582.07(3) pm, b = 1128.73(5) pm, c = 631.26(4) pm). O–H stretching frequencies are shifted by a factor of 1.35 from 3390 cm−1 in the hydride to 2513 cm−1 in the deuteride as seen in infrared spectra. SbC2O4OH suffers radiation damage in a synchrotron beam, which leaves a dark amorphous residue. Thermal decomposition at 564 K yields antimony oxide, carbon dioxide, carbon oxide, and water in an endothermic reaction. When using SbC2O4OH as a precursor in reactions, however, ternary oxides are only formed at much higher temperatures.

Crystal structure of pseudo-six-fold carbon dioxide phase II at high pressures and temperatures

2002 ◽  
Vol 65 (10) ◽  
Author(s):  
C. S. Yoo ◽  
H. Kohlmann ◽  
H. Cynn ◽  
M. F. Nicol ◽  
V. Iota ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Carbon Dioxide ◽  
Phase Ii ◽  
High Pressures ◽  
High Pressures And Temperatures
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