Hexagonal, hollow, aluminium-containing ZSM-5 tubes prepared from mesoporous silica templatesElectronic supplementary information (ESI) available: XRD patterns for MS and MS coated with silicalite-1 during the hydrothermal synthesis procedure. See http://www.rsc.org/suppdata/cc/b4/b406753c/

2004 ◽  
pp. 1920 ◽  
Author(s):  
W. Song ◽  
R. Kanthasamy ◽  
V. H. Grassian ◽  
S. C. Larsen
Keyword(s):  
Hydrothermal Synthesis ◽  
Mesoporous Silica ◽  
Supplementary Information ◽  
Synthesis Procedure ◽  
Xrd Patterns

Hydrothermal Synthesis of Bi1.5ZnNb1.5O7 Nanopowders

2007 ◽  
Vol 561-565 ◽  
pp. 495-498 ◽  
Author(s):  
Jin Liang Huang ◽  
Xiao Wang ◽  
Liu Shuan Yang ◽  
Chun Wei Cui ◽  
Xing Hua Yang
Keyword(s):  
Reaction Time ◽  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Pyrochlore Phase ◽  
Synthesis Temperature ◽  
Minimum Size ◽  
Hydrothermal Reactions ◽  
Prolonged Reaction Time ◽  
Scherrer Equation ◽  
Xrd Patterns

The cubic pyrochlore phase Bi1.5ZnNb1.5O7 nanopowder was successfully synthesized by the hydrothermal method (HTM) from the starting materials: Bi(NO3)3·5H2O, ZnO, Nb2O5 and the mineralizer: KOH. The XRD patterns prove that the cubic pyrochlore phase Bi1.5ZnNb1.5O7 nanopowder can be obtained by HTM, and TEM photographs show that the powders present the regularly granular shape, when the hydrothermal reactions were conducted at synthesis temperatures 140~220°C and reaction time for 6~48h. The crystalline sizes of the powders were calculated by the Scherrer equation to be about 43~49nm. The crystalline sizes decreased both with the increase in synthesis temperature and the prolonged reaction time until they reached to the minimum size about 43nm at 220°C for 24h.However, they tended to increase when the reaction time was above 24h.

scholarly journals Enhanced Adsorption of Methylene Blue and Congo Red from Aqueous Solutions by MCM-41/HKUST-1 Composites

2019 ◽  
Vol 31 (8) ◽  
pp. 1675-1682 ◽  
Author(s):  
D.O. Sulistiono ◽  
E. Santoso ◽  
R. Ediati
Keyword(s):  
Methylene Blue ◽  
Mesoporous Silica ◽  
Aqueous Solutions ◽  
Congo Red ◽  
Metal Organic Framework ◽  
Solvent Mixture ◽  
Sem Images ◽  
Enhanced Adsorption ◽  
Xrd Patterns ◽  
Mcm 41

Impregnation of mesoporous silica MCM-41 on metal organic framework type HKUST-1 or often called CuBTC (BTC = 1,3,5-benzenetricarboxylate) has been successfully carried out by solvothermal methods in a solvent mixture of water, ethanol and N,N-dimethylformamide (DMF). The XRD patterns of the obtained solids showed that MCM-41/HKUST-1 composites had the same crystalline phase as pure as HKUST-1. SEM images revealed that the impregnation of the mesoporous silica to HKUST-1 did not alter the surface morphology of the original HKUST-1, which had octahedral shapes. In addition, the thermal stability of the MCM-41/HKUST-1 composites reached 302 °C, increased by 292 °C in comparison to the HKUST-1, even though the impregnation process resulted in a decreased in the specific surface area of the composites. Furthermore, MCM-41/HKUST-1 composites showed outstanding performance as adsorbent of methylene blue and Congo red in aqueous solutions. Results of adsorption studies showed that a pseudo-second order kinetics and Langmuir isotherm were observed for both types of dyes.

Facile H2O2 Hydrothermal Synthesis of Bimodal Mesoporous Silica MCM-48 Spheres

2010 ◽  
Vol 23 (4) ◽  
pp. 479-483 ◽  
Author(s):  
Dong Tian ◽  
Guo-ping Yong ◽  
Hong-wu Tong ◽  
Shao-min Liu
Keyword(s):  
Hydrothermal Synthesis ◽  
Mesoporous Silica
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