Temperature Induced Structural Transformations and Gas Adsorption in the Zeolitic Imidazolate Framework ZIF-8: A Raman Study

2013 ◽  
Vol 117 (43) ◽  
pp. 11006-11012 ◽  
Author(s):  
Gayatri Kumari ◽  
Kolleboyina Jayaramulu ◽  
Tapas Kumar Maji ◽  
Chandrabhas Narayana
Keyword(s):  
Gas Adsorption ◽  
Structural Transformations ◽  
Zeolitic Imidazolate Framework ◽  
Raman Study

Raman study of structural transformations in self-assembled diphenylalanine nanotubes at elevated temperatures

2017 ◽  
Vol 48 (11) ◽  
pp. 1401-1405 ◽  
Author(s):  
Pavel S. Zelenovskiy ◽  
Anton O. Davydov ◽  
Alexander S. Krylov ◽  
Andrei L. Kholkin
Keyword(s):  
Elevated Temperatures ◽  
Structural Transformations ◽  
Raman Study ◽  
Self Assembled

Raman study of structural transformations of titania coatings induced by laser annealing

1984 ◽  
Vol 45 (10) ◽  
pp. 1065-1067 ◽  
Author(s):  
L. S. Hsu ◽  
R. Solanki ◽  
G. J. Collins ◽  
C. Y. She
Keyword(s):  
Laser Annealing ◽  
Structural Transformations ◽  
Raman Study ◽  
Titania Coatings

Structural collapse of Al13- intercalated montmorillonite by Na- salicylate solutions

Clay Minerals ◽  
2001 ◽  
Vol 36 (3) ◽  
pp. 335-344 ◽  
Author(s):  
E. Molis ◽  
F. Thomas ◽  
K. Faisandier ◽  
I. Bihannic
Keyword(s):  
Gas Adsorption ◽  
Hydration Shell ◽  
Structural Transformations ◽  
Organic Ligands ◽  
Nitrogen Gas ◽  
Dramatic Decrease ◽  
X Ray ◽  
X Ray Scattering ◽  
Two Phases ◽  
Natural Media

AbstractThe chemical, textural and structural transformations of Al13-intercalated montmorillonite, resulting from the depolymerization of the interlamellar Al13 polycations by Na salicylate solutions, were studied. Nitrogen gas adsorption shows a dramatic decrease in specific surface area from 493 to 39 m2g–1, due to the loss of microporosity. Modelling of small-angle X-ray scattering (SAXS) curves shows that the final product contains two phases: a Na-exchanged swelling phase accounting for 40% of the clay, and a fixed interlayer distance (20.8 Å ) phase accounting for 60% of the clay. The Al remaining in the clay galleries (45% of the initial Al) is composed of 13% Al13– and 87% hexacoordinated Al, probably Al(OH)03 and oligomeric Al-salicylate complexes, as shown by 27Al NMR. The instability of Al13-intercalated montmorillonite towards organic ligands is related to the hydration shell of the tridecamer, revealed by SAXS. These results focus on the necessity to take into account the presence of organic ligands in natural media when using materials such as Al13-intercalated clays.

Pressure‐induced insertion and transformation of N 2 in the cavities of zeolitic imidazolate framework‐8: A Raman study

2020 ◽  
Vol 51 (7) ◽  
pp. 1230-1239
Author(s):  
Shuanglong Chen ◽  
Xin Li ◽  
Hang Lv ◽  
Enlai Dong ◽  
Xibao Yang ◽  
...  
Keyword(s):  
Zeolitic Imidazolate Framework ◽  
Raman Study

X-Ray Diffraction and Micro-Raman Study of Structural Transformations in (B2O3)1−x(H2O)x Glasses and Liquids

2010 ◽  
Vol 93 (11) ◽  
pp. 3745-3751 ◽  
Author(s):  
Ralf Brüning ◽  
Justine B. Galbraith ◽  
Katherine E. Braedley ◽  
Jonathan Johnstone ◽  
Jacques Robichaud ◽  
...  
Keyword(s):  
Structural Transformations ◽  
X Ray Diffraction ◽  
X Ray ◽  
Raman Study

Synthesis, gas adsorption and reliable pore size estimation of zeolitic imidazolate framework-7 using CO 2 and water adsorption

2017 ◽  
Vol 25 (5) ◽  
pp. 595-601 ◽  
Author(s):  
Mahdi Niknam Shahrak ◽  
Morteza Niknam Shahrak ◽  
Akbar Shahsavand ◽  
Nasser Khazeni ◽  
Xiaofei Wu ◽  
...  
Keyword(s):  
Pore Size ◽  
Synthesis Gas ◽  
Water Adsorption ◽  
Gas Adsorption ◽  
Size Estimation ◽  
Zeolitic Imidazolate Framework

scholarly journals Hybrid Metal-Organic Framework-Cellulose Materials Retaining High Porosity: ZIF-8@Cellulose Nanofibrils

Inorganics ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 84
Author(s):  
Johannes Thunberg ◽  
Savannah C. Zacharias ◽  
Merima Hasani ◽  
Olayinka. A. Oyetunji ◽  
Francoise M. Amombo Noa ◽  
...  
Keyword(s):  
Self Assembly ◽  
Gas Adsorption ◽  
Metal Organic Framework ◽  
Cellulose Nanofibrils ◽  
Full Potential ◽  
High Porosity ◽  
Free Standing ◽  
Zeolitic Imidazolate Framework ◽  
Freeze Dried ◽  
Metal Organic

Metal-organic frameworks have attracted a great deal of attention for future applications in numerous areas, including gas adsorption. However, in order for them to reach their full potential a substrate to provide an anchor may be needed. Ideally, this substrate should be environmentally friendly and renewable. Cellulose nanofibrils show potential in this area. Here we present a hybrid material created from the self-assembly of zeolitic imidazolate framework (ZIF-8) nanocrystals on cellulose nanofibrils (CNF) in aqueous medium. The CNF/ZIF-8 was freeze dried and formed free standing materials suitable for gas adsorption. A BET area of 1014 m2 g−1 was achieved for the CNF/ZIF-8 hybrid materials ZIF-8@cellulose which is comparable with reported values for free standing ZIF-8 materials, 1600 m2 g−1, considering the dilution with cellulose, and a considerable enhancement compared to CNF on its own, 32 m2 g−1.

Gas adsorption in shaped zeolitic imidazolate framework-8

2015 ◽  
Vol 23 (8) ◽  
pp. 1275-1282 ◽  
Author(s):  
Jiqin Zhu ◽  
Lu Jiang ◽  
Chengna Dai ◽  
Na Yang ◽  
Zhigang Lei
Keyword(s):  
Gas Adsorption ◽  
Zeolitic Imidazolate Framework

Characterization and properties of Zn/Co zeolitic imidazolate frameworks vs. ZIF-8 and ZIF-67

2017 ◽  
Vol 5 (3) ◽  
pp. 952-957 ◽  
Author(s):  
Kui Zhou ◽  
Bibimaryam Mousavi ◽  
Zhixiong Luo ◽  
Shophot Phatanasri ◽  
Somboon Chaemchuen ◽  
...  
Keyword(s):  
Gas Adsorption ◽  
Zeolitic Imidazolate Frameworks ◽  
Zeolitic Imidazolate Framework

A novel Zn/Co zeolitic imidazolate framework (ZIF) has been constructed which demonstrates better gas adsorption (CO2, CH4 and N2) and catalytic (CO2 conversion) properties compared with ZIF-8 and ZIF-67.

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