Alkali earth metal (Ca, Sr, Ba) based thermostable metal–organic frameworks (MOFs) for proton conduction

2012 ◽  
Vol 48 (41) ◽  
pp. 4998 ◽  
Author(s):  
Tanay Kundu ◽  
Subash Chandra Sahoo ◽  
Rahul Banerjee
Keyword(s):  
Metal Organic Frameworks ◽  
Earth Metal ◽  
Proton Conduction ◽  
Alkali Earth Metal ◽  
Alkali Earth ◽  
Metal Organic

Phase selectivity and tunable photophysical nature of rare earth metal–organic frameworks of EuxY1−x-PTC (H3PTC = 2,4,6-pyridine tricarboxylic acid; x = 0–1)

2020 ◽  
Vol 49 (42) ◽  
pp. 14985-14994
Author(s):  
Xu-Sheng Gao ◽  
Mei-Juan Ding ◽  
Jin Zhang ◽  
Li-Duo Zhao ◽  
Xiao-Ming Ren
Keyword(s):  
Rare Earth ◽  
Solid Solutions ◽  
Rare Earth Metal ◽  
Metal Organic Frameworks ◽  
Earth Metal ◽  
Tricarboxylic Acid ◽  
Excitation Wavelength ◽  
Metal Organic ◽  
Phase Selectivity

All solid solutions (EuxY1−x-PTC, x = 0.013–0.82) are isomorphic to Eu-PTC, but different from Y-PTC, and show phase selectivity as well as excitation wavelength dependent emission.

Void Space vs. Surface Functionalization for Proton Conduction in Metal–Organic Frameworks

2021 ◽  
Author(s):  
Marvin K Sarango-Ramírez ◽  
Junkil Park ◽  
Jihan Kim ◽  
Yukihiro Yoshida ◽  
Dae-Woon Lim ◽  
...  
Keyword(s):  
Surface Functionalization ◽  
Metal Organic Frameworks ◽  
Proton Conduction ◽  
Void Space ◽  
Metal Organic

scholarly journals SBA-15 with Crystalline Walls Produced via Thermal Treatment with the Alkali and Alkali Earth Metal Ions

Materials ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5270
Author(s):  
Sung Soo Park ◽  
Sang-Wook Chu ◽  
Liyi Shi ◽  
Shuai Yuan ◽  
Chang-Sik Ha
Keyword(s):  
Metal Ions ◽  
Pore Size ◽  
Metal Ion ◽  
Pore Diameter ◽  
Earth Metal ◽  
Silica Matrix ◽  
Alkali Earth Metal ◽  
Alkali Earth ◽  
Large Pore ◽  
Large Pore Size

Crystalline walled SBA-15 with large pore size were prepared using alkali and alkali earth metal ions (Na+, Li+, K+ and Ca2+). For this work, the ratios of alkali metal ions (Si/metal ion) ranged from 2.1 to 80, while the temperatures tested ranged from 500 to 700 °C. The SBA-15 prepared with Si/Na+ ratios ranging from 2.1 to 40 at 700 °C exhibited both cristobalite and quartz SiO2 structures in pore walls. When the Na+ amount increased (i.e., Si/Na increased from 80 to 40), the pore size was increased remarkably but the surface area and pore volume of the metal ion-based SBA-15 were decreased. When the SBA-15 prepared with Li+, K+ and Ca2+ ions (Si/metal ion = 40) was thermally treated at 700 °C, the crystalline SiO2 of quartz structure with large pore diameter (i.e., 802.5 Å) was observed for Ca+2 ion-based SBA-15, while no crystalline SiO2 structures were observed in pore walls for both the K+ and Li+ ions treated SBA-15. The crystalline SiO2 structures may be formed by the rearrangement of silica matrix when alkali or alkali earth metal ions are inserted into silica matrix at elevated temperature.

Two new alkaline earth metal organic frameworks with the diamino derivative of biphenyl-4,4′-dicarboxylate as bridging ligand: Structures, fluorescence and quenching by gas phase aldehydes

Polyhedron ◽  
2018 ◽  
Vol 153 ◽  
pp. 173-180 ◽  
Author(s):  
Stavros A. Diamantis ◽  
Anastasia D. Pournara ◽  
Antonios G. Hatzidimitriou ◽  
Manolis J. Manos ◽  
Giannis S. Papaefstathiou ◽  
...  
Keyword(s):  
Gas Phase ◽  
Alkaline Earth ◽  
Metal Organic Frameworks ◽  
Earth Metal ◽  
Alkaline Earth Metal ◽  
Bridging Ligand ◽  
Metal Organic
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