High specific surface area TEOS-based aerogels with large pore volume prepared at an ambient pressure

2007 ◽  
Vol 254 (2) ◽  
pp. 574-579 ◽  
Author(s):  
Pradip B. Sarawade ◽  
Jong-Kil Kim ◽  
Ho-Kun Kim ◽  
Hee-Taek Kim
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Pore Volume ◽  
Ambient Pressure ◽  
High Specific Surface Area ◽  
Large Pore ◽  
Large Pore Volume

scholarly journals Synthesis of dense porous layered double hydroxides from struvite

2021 ◽  
Vol 23 (4) ◽  
pp. 1616-1620
Author(s):  
W. L. Joyce Kwok ◽  
Hongri Suo ◽  
Chunping Chen ◽  
D. W. Justin Leung ◽  
Jean-Charles Buffet ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Layered Double Hydroxides ◽  
Pore Volume ◽  
Wastewater Treatment Plants ◽  
High Specific Surface Area ◽  
Large Pore Volume ◽  
Double Hydroxides

An atom economic synthesis of dense porous layered double hydroxides (SLDHs) using an undesirable waste in wastewater treatment plants (struvite) is reported. The obtained SLDHs show high specific surface area, large pore volume and high density.

scholarly journals A large-surface-area TS-1 nanocatalyst: a combination of nanoscale particle sizes and hierarchical micro/mesoporous structures

RSC Advances ◽  
2019 ◽  
Vol 9 (17) ◽  
pp. 9694-9699 ◽  
Author(s):  
Changlin Du ◽  
Nan Cui ◽  
Linghao Li ◽  
Zile Hua ◽  
Jianlin Shi
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Pore Volume ◽  
Total Pore Volume ◽  
High Specific Surface Area ◽  
Particle Sizes ◽  
Top Down ◽  
First Time ◽  
Mesoporous Structures

By dry-gel steam-assisted crystallization and top-down alkali-etching treatment, hierarchically structured TS-1 nanozeolites with abundant micro/mesopores were synthesized for the first time, with high specific surface area of 606 m2 g−1 and total pore volume of 0.86 cm3 g−1.

Optimization of Experimental Conditions for the Preparation of High Specific Surface Area Bamboo-Based Activated Carbon

2015 ◽  
Vol 1090 ◽  
pp. 154-159
Author(s):  
Sheng Zhou Zhang ◽  
Hong Ying Xia ◽  
Li Bo Zhang ◽  
Jin Hui Peng ◽  
Jian Wu ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Pore Volume ◽  
Total Pore Volume ◽  
High Specific Surface Area ◽  
Raw Material ◽  
Experimental Conditions ◽  
Average Pore

Bamboo as the raw material is carbonized to prepare high specific surface area activated carbon by microwave heating under nitrogen atmosphere in our present work. Influences of activation agents on the preparation of activated carbon are studied. The results show that activation agents have a significant influence on the preparation of activated carbon. Under the heating time of 15 min, the adsorption capacity of the activated carbon prepared utilizing KOH as activation agent is the best. When the KOH/C ratio is 4, the iodine number and yield of activated carbon are 2298 mg/g and 39.82%, respectively. The BET specific surface area, total pore volume and average pore diameter of activated carbon are 3441 m2/g, 2.093 ml/g and 2.434 nm, respectively. The micropore volume of 1.304 ml/g is 62.30% of total pore volume, indicating that the activated carbon is microporous activated carbon.

Arsenate removal from aqueous solutions using magnetic mesoporous iron manganese bimetal oxides

RSC Advances ◽  
2015 ◽  
Vol 5 (6) ◽  
pp. 4058-4068 ◽  
Author(s):  
Zhipan Wen ◽  
Chaomeng Dai ◽  
Yan Zhu ◽  
Yalei Zhang
Keyword(s):  
Aqueous Solutions ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Pore Volume ◽  
High Specific Surface Area ◽  
Iron Manganese

A novel MMIM with high specific surface area and pore volume was synthesized, and presented excellent performances for As(v) removal.

scholarly journals Synthesis of micro-mesopores flowerlike γ-Al2O3 nano-architectures

2014 ◽  
Vol 79 (8) ◽  
pp. 1007-1017 ◽  
Author(s):  
Mozaffar Abdollahifar ◽  
Reza Zamani ◽  
Ehsan Beiygie ◽  
Hosain Nekouei
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Pore Volume ◽  
Total Pore Volume ◽  
High Specific Surface Area ◽  
X Ray Diffraction ◽  
N2 Adsorption ◽  
X Ray ◽  
Adsorption Desorption

The micro-mesopores flowerlike ?-Al2O3 nano-architectures have been synthesized by thermal decomposition method using the synthesized AlOOH (boehmite) as precursor. After calcination at 500?C for 5 h, the obtained flowerlike ?-Al2O3 has similar structure like the AlOOH precursor. X-ray diffraction (XRD), FTIR, TG, FESEM and TEM techniques were used to characterize morphology and structure of the synthesized samples. The specific surface area (BET), pore volume and pore-size distribution of the products were determined by N2 adsorption-desorption measurements. The flowerlike ?-Al2O3 showed BET high specific surface area 148 m2 g-1 with total pore volume 0.59 cm3 g-1.

Ambient pressure dried tetrapropoxysilane-based silica aerogels with high specific surface area

2018 ◽  
Vol 75 ◽  
pp. 63-70 ◽  
Author(s):  
Vinayak G. Parale ◽  
Wooje Han ◽  
Hae-Noo-Ree Jung ◽  
Kyu-Yeon Lee ◽  
Hyung-Ho Park
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Ambient Pressure ◽  
Silica Aerogels ◽  
High Specific Surface Area

Pore Structure Characterization of TiO2-SiO2 Composite Aerogel Prepared via Ambient Pressure Drying by Sol Pre-Modification Process

2012 ◽  
Vol 534 ◽  
pp. 101-105 ◽  
Author(s):  
Jing Xiao Liu ◽  
Lu Nan Bai ◽  
Fei Shi ◽  
Zhi Qiang Hu ◽  
Yan Yan Jiang ◽  
...  
Keyword(s):  
Specific Surface ◽  
Pore Structure ◽  
Surface Area ◽  
Specific Surface Area ◽  
Pore Volume ◽  
Ambient Pressure ◽  
Volume Ratio ◽  
Ambient Pressure Drying ◽  
Composite Aerogel ◽  
Composite Aerogels

In this paper, TiO2-SiO2composite aerogels were prepared via ambient pressure drying by sol-gel and sol pre-modification method. The pre-modification solution consists of hexamethyldisiloxane (HMDSO) as buffering agent, trimethylchlorosilane (TMCS) as modifier and hexane as organic solvent. The pore structure of TiO2-SiO2composite aerogels was characterized by N2adsorption-desorption method. The effects of HMDSO/TMCS volume ratio on the pore structure and properties of TiO2-SiO2composite aerogel were studied. The results indicate that the pre-modification of TiO2-SiO2composite sol by adding HMDSO/TMCS/Hexane solution could shorten the preparation period. Increasing the amount of HMDSO is favorable for obtaining TiO2-SiO2composite aerogel with higher specific surface area and pore volume. The best volume ratio of HMDSO/TMCS/composite sol for preparing mesoporous TiO2-SiO2composite aerogels were 12:6:120 and 12:12:120, with which the specific surface area and pore volume of the obtained TiO2-SiO2composite aerogel are 425.2～645.4 m2/g and 0.80～2.85 m3/g, respectively.

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