Mesoporous Materials from Novel Silica Source as Heterogeneous Catalyst

2014 ◽  
pp. 334-345
Keyword(s):  
Heterogeneous Catalyst ◽  
Mesoporous Materials ◽  
Silica Source

Adsorption of Methyl Blue on Mesoporous Materials Using Rice Husk Ash as Silica Source

2016 ◽  
Vol 16 (4) ◽  
pp. 4108-4114 ◽  
Author(s):  
Nhat Thien Nguyen ◽  
Shiao-Shing Chen ◽  
Nguyen Cong Nguyen ◽  
Hau Thi Nguyen ◽  
Hsiao Hsin Tsai ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Mesoporous Materials ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Methyl Blue ◽  
Ammonium Bromide ◽  
Tem Analysis ◽  
Silica Source ◽  
Silica Materials ◽  
Mesoporous Silica Materials

It is recognized that recycling and reuse of waste can result in significant savings in materials and energy. In this research, the adsorption of methyl blue (MB) using waste rice husk ash (Rha) and mesoporous silica materials made from Rha (R-MCM) were analyzed. Mesoporous silica materials were synthesized using cetyltrimethyl ammonium bromide (CTAB) as a cationic surfactant and Rha as the silica source. The prepared samples were characterized by Brunnaur-Emmet-Teller (BET) adsorption isotherm analyzer and transmission electron microscope (TEM) analysis. The results showed the surface area of R-MCM materials was 1347 m2g−1 and the pore volume was 0.906 cm3g−1. TEM analysis showed that the mesoporous materials generally exhibited ordered hexagonal arrays of mesopores with a uniform pore size. The effects on adsorption performance under different initial dye concentrations, different pH values and different dosages of adsorbent were also studied. Both Langmuir and Freundlich adsorption models were applied to describe the equilibrium isotherms. The results show that the maximum removal efficiency of MB more than 99%.

Preparation and Characterization of Silica-Based Mesoporous Materials

2011 ◽  
Vol 396-398 ◽  
pp. 463-467
Author(s):  
Xiao Hui Zhang ◽  
Qi Guang Cao ◽  
Guo Li Xie
Keyword(s):  
Hydrochloric Acid ◽  
Pore Size ◽  
Mesoporous Materials ◽  
Cetyl Trimethyl Ammonium Bromide ◽  
Mesoporous Structure ◽  
Ammonium Bromide ◽  
Pore Sizes ◽  
Silica Source ◽  
Cetyl Trimethyl Ammonium

The silica-based mesoporous materials were synthesized under normal atmospheric with Cetyl trimethyl ammonium bromide(CTAB) as surfactant, TEOS as silica source and hydrochloric acid as activator. The pore sizes distribution of mesoporous materials were adjusted by organic assistant reagent TMB(1,3,5-three toluol).The materials after and before TMB addition were characterized through XRD and IR. The results showed that the materials have regular hexagonal mesoporous structure. The structure is more regular and pore size is more bigger after TMB added.

Economical synthesis of amorphous carbon nanotubes and SBA-15 mesoporous materials using palygorskite as a template and silica source

2014 ◽  
Vol 132 ◽  
pp. 425-427 ◽  
Author(s):  
Jinlong Jiang ◽  
Zhonggang Chen ◽  
Chuansong Duanmu ◽  
Yaxin Gu ◽  
Jing Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Mesoporous Materials ◽  
Amorphous Carbon ◽  
Silica Source

scholarly journals Synthesis of micro-mesoporous materials ZSM-5/FDU-12 and the performance of dibenzothiophene hydrodesulfurization

RSC Advances ◽  
2017 ◽  
Vol 7 (45) ◽  
pp. 28038-28047 ◽  
Author(s):  
Honglei Zhang ◽  
Longnian Han ◽  
Aijun Duan ◽  
Chunming Xu ◽  
Zhen Zhao ◽  
...  
Keyword(s):  
Mesoporous Materials ◽  
Molar Ratios ◽  
Assembly Method ◽  
Silica Source

The micro-mesoporous materials ZF-x (ZSM-5-FDU-12, x = SiO2/Al2O3) with different molar ratios of SiO2/Al2O3 were synthesized by an in situ nano-assembly method with the ZSM-5 precursor serving as the silica source.

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