Ni/SiO2 catalyst with hierarchical pore structure prepared by phase separation in sol–gel process

2000 ◽  
Vol 2 (21) ◽  
pp. 4983-4990 ◽  
Author(s):  
Norifumi Nakamura ◽  
Ryoji Takahashi ◽  
Satoshi Sato ◽  
Toshiaki Sodesawa ◽  
Satoshi Yoshida
Keyword(s):  
Phase Separation ◽  
Pore Structure ◽  
Sol Gel ◽  
Hierarchical Pore Structure ◽  
Sol Gel Process ◽  
Hierarchical Pore

Silica–Alumina Catalyst with Bimodal Pore Structure Prepared by Phase Separation in Sol–Gel Process

2001 ◽  
Vol 200 (1) ◽  
pp. 197-202 ◽  
Author(s):  
Ryoji Takahashi ◽  
Satoshi Sato ◽  
Toshiaki Sodesawa ◽  
Miyuki Yabuki
Keyword(s):  
Phase Separation ◽  
Pore Structure ◽  
Sol Gel ◽  
Alumina Catalyst ◽  
Sol Gel Process ◽  
Silica Alumina ◽  
Bimodal Pore Structure

Preparation of carbon-based monolithic CO2 adsorbents with hierarchical pore structure

2020 ◽  
Vol 388 ◽  
pp. 124308 ◽  
Author(s):  
Edith Mawunya Kutorglo ◽  
Jakub Kovačovič ◽  
Dan Trunov ◽  
Fatima Hassouna ◽  
Anna Fučíková ◽  
...  
Keyword(s):  
Pore Structure ◽  
Hierarchical Pore Structure ◽  
Hierarchical Pore ◽  
Carbon Based

Hierarchical Pore Structure and Wetting Properties of Single-Wall Carbon Nanotube Fibers

Nano Letters ◽  
2003 ◽  
Vol 3 (3) ◽  
pp. 419-423 ◽  
Author(s):  
Alexander V. Neimark ◽  
Sigrid Ruetsch ◽  
Konstantin G. Kornev ◽  
Peter I. Ravikovitch ◽  
Philippe Poulin ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Pore Structure ◽  
Single Wall Carbon Nanotube ◽  
Single Wall Carbon ◽  
Wetting Properties ◽  
Hierarchical Pore Structure ◽  
Hierarchical Pore ◽  
Carbon Nanotube Fibers

Preparation of Macroprous C12A7 Mayenite Monoliths via a Sol-Gel Process with Nitrates as Precursors

2018 ◽  
Vol 768 ◽  
pp. 211-217 ◽  
Author(s):  
Rui Wang ◽  
Yu Kun Sun ◽  
Bao Jia Qi Jiang ◽  
Hui Yang ◽  
Xing Zhong Guo
Keyword(s):  
Heat Treatment ◽  
Phase Separation ◽  
Binary System ◽  
Propylene Oxide ◽  
Crystalline Phase ◽  
Sol Gel ◽  
Single Crystalline ◽  
Sol Gel Process

Macroporous Ca12Al14O33(C12A7) mayenite monoliths have been successfully prepared via a sol-gel process in the presence of propylene oxide (PO) and poly (ethyleneoxide) (PEO). Gelation of CaO-Al2O3binary system with nitrates salts as additional precursors is accelerated by PO as an acid scavenger, while PEO works as a phase separation inducer to mediate the phase separation of the system. Appropriate PO and PEO amounts allow the formation of monolithic xerogel with interconnected macropores and co-continuous skeletons. The resultant dried gels are amorphous and the single crystalline phase Ca12Al14O33mayenite forms after heat-treatment at 1100 °C in air, while the macrostructure is preserved with a porosity as high as 78% and smoother and denser skeletons.

Sign in / Sign up

Export Citation Format

Share Document