Comparative study of adsorption capacity of mesoporous silica materials for molsidomine: Effects of functionalizing and solution pH

2014 ◽  
Vol 40 ◽  
pp. 164-171 ◽  
Author(s):  
N.A. Alyoshina ◽  
A.V. Agafonov ◽  
E.V. Parfenyuk
2019 ◽  
Vol 956 ◽  
pp. 282-293
Author(s):  
Guo Jun Ke ◽  
Tian Shi Liu ◽  
Peng Fei Yang ◽  
Xiao Lin Tang

A series of mesoporous silica materials (SBA-15, MCM-41, KIT-6) with different pore structures and properties were synthesized and characterized by means of small angle X-ray scattering, transmission electron microscopy, infrared spectroscopy and nitrogen adsorption-desorption. The adsorption properties of three mesoporous silica materials for chlorine ions in aqueous solution were investigated. The results show that SBA-15, MCM-41 with two-dimensional hexagonal structure has a better adsorption effect on chloride ion than KIT-6 With cubic core structure, and MCM-41 with larger specific surface area and smaller pore size has better adsorption effect on chloride ion than on SBA-15. The specific surface area of MCM-41 is 1036 m2/g, and the The adsorption kinetics accords with the pseudo-second-order kinetic model, and the adsorption isotherm is more consistent with the Langmuir isotherm model. The optimum operating conditions for MCM-41 to adsorb chloride ions are as follows: temperature 55 °C, pH 6, adsorption time 2 h, Cl- concentration 0.01 mol/L (584 mg/L) and adsorbent concentration 1.0 g/L. Under these conditions, the adsorption capacity of MCM-41 to chloride ions is greatly enhanced, and the maximum adsorption capacity is 188.18 mg/g.


2011 ◽  
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pp. 12337 ◽  
Author(s):  
Daniel Carmona ◽  
Francisco Balas ◽  
Álvaro Mayoral ◽  
Rafael Luque ◽  
Esteban P. Urriolabeitia ◽  
...  

2021 ◽  
Vol 125 (12) ◽  
pp. 3197-3207
Author(s):  
Johanna R. Bruckner ◽  
Jessica Bauhof ◽  
Jacqueline Gebhardt ◽  
Ann-Katrin Beurer ◽  
Yvonne Traa ◽  
...  

2011 ◽  
Vol 358 (1) ◽  
pp. 136-145 ◽  
Author(s):  
Bao-Lian Su ◽  
Nicolas Moniotte ◽  
Noan Nivarlet ◽  
Li-Hua Chen ◽  
Zheng-Yi Fu ◽  
...  

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