Synthesis of mesoporous silicon imido nitride with high surface area and narrow pore size distribution

2000 ◽  
pp. 2481-2482 ◽  
Author(s):  
Stefan Kaskel ◽  
David Farrusseng ◽  
Klaus Schlichte
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Mesoporous Silicon ◽  
Narrow Pore Size Distribution

Organogel Assisted Porous Organic Polymer Embedding Cu Nanoparticles for Selectivity Control Semi Hydrogenation of Alkynes

Nanoscale ◽  
2022 ◽  
Author(s):  
John Mondal ◽  
Ratul Paul ◽  
Subhash Chandra Shit ◽  
Arunima Singh ◽  
Roong Jien Wong ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
High Surface ◽  
High Surface Area ◽  
Organic Polymer ◽  
Cu Nanoparticles ◽  
Significant Research ◽  
Selectivity Control

Heteroatom-rich porous-organic-polymers (POPs) comprising of highly cross-linked robust skeletons with high physical and thermal stability, high surface area, and tunable pore size distribution have garnered significant research interests for their...

Synthesis and Characterization of Dense Mesoporous Alumina

2014 ◽  
Vol 616 ◽  
pp. 252-257
Author(s):  
Atsushi Nakahira ◽  
Hironobu Nishimoto ◽  
Yukitaka Hamada ◽  
Yuki Yamasaki
Keyword(s):  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Surface Area ◽  
High Specific Surface Area ◽  
Mesoporous Alumina ◽  
Bet Surface Area ◽  
Synthesis And Characterization ◽  
Narrow Pore Size Distribution

Dense mesoporous alumina bulks were successfully synthesized by a hydrothermal hot-pressing (HHP) method for mesoporous alumina powders prepared as starting material with a high BET surface area and narrow pore size distribution. As a result, mesoporous alumina HHP bulks had high density with uniformity pore size distribution and a high specific surface area. Their microstructural features for dense mesoporous alumina bulks were observed by SEM. The characterization of mesopores was examined.

Mesoporous Aerogels Synthesized with an Ionic Liquid [Hmim]Br as Template via Ambient Pressure Drying

2012 ◽  
Vol 616-618 ◽  
pp. 1864-1868
Author(s):  
Hong Yi Dai ◽  
Hai Rui Yan ◽  
Chun Ling Yu ◽  
Ying Huan Fu ◽  
Guo Lin Shao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Surface Area ◽  
Ambient Pressure ◽  
High Surface ◽  
Molar Ratio ◽  
Average Pore ◽  
Average Pore Radius

Mesoporous silica aerogels with a high surface area and narrow pore size distribution were prepared from tetraethylorthosilicate (TEOS) precursor at ambient pressure by using a water miscible ionic liquid (IL) [Hmim]Br as a template. The aerogels were characterized by scanning electron microscopy (SEM) and N2 gas adsorption-desorption isotherms (BET and BJH analyses), and the effect of the IL on gel structure was also studied. The results showed that IL plays an important role in regulating the nanostructure of the aerogels, in particular, pore sizes and their distribution. By increasing the IL/Si molar ratio from 4 to 7, the specific surface area of the resultant aerogel increased from 822.38 to 992.43 m2/g, while the pore volume decreased from 1.568 to 1.031 cm3/g. More importantly, the pore size distribution became narrower with minimum average pore radius centralized at 20 nm as the IL/Si molar ratio of 7. Compared with other IL templating methods previously reported, notable attributes of this method include gelation at a much wider range of the IL/Si molar ratios (up to 7) and the formation of homogeneous porous structure whose size can be up to meso-scale (2 nm - 50 nm).

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