scholarly journals Microstructure Control of Porous Silica Glass with Monodispersed Spherical Silica Particles

1992 ◽  
Vol 100 (1159) ◽  
pp. 272-275 ◽  
Author(s):  
Hiroshi SUZUKI ◽  
Shigeyuki TAKAGI ◽  
Hideki MORIMITSU ◽  
Shin-ichi HIRANO
Keyword(s):  
Silica Glass ◽  
Porous Silica ◽  
Silica Particles ◽  
Microstructure Control ◽  
Spherical Silica ◽  
Spherical Silica Particles ◽  
Porous Silica Glass

scholarly journals Design, synthesis, and catalytic performance of modified graphene oxide based on a cobalt complex as a heterogenous catalyst for the preparation of aminonaphthoquinone derivatives

RSC Advances ◽  
2021 ◽  
Vol 11 (28) ◽  
pp. 17108-17115
Author(s):  
Mahnaz Mirheidari ◽  
Javad Safaei-Ghomi
Keyword(s):  
Graphene Oxide ◽  
Cobalt Complex ◽  
Catalytic Performance ◽  
Silica Particles ◽  
Design Synthesis ◽  
Spherical Silica ◽  
Modified Graphene Oxide ◽  
Spherical Silica Particles ◽  
Heterogenous Catalyst ◽  
Modified Graphene

GO@f-SiO2@Co is a heterogenous catalyst composed of spherical silica particles grafted on the surface of graphene oxide with ethylenediamine ligands and coordination with Co(ii). We assessed the activity of the catalyst for the synthesis of aminonaphthoquinones.

Viscous flow flash sintering of porous silica glass

2017 ◽  
Vol 476 ◽  
pp. 60-66 ◽  
Author(s):  
Miguel Oscar Prado ◽  
Mattia Biesuz ◽  
Matteo Frasnelli ◽  
Franco Emmanuel Benedetto ◽  
Vincenzo M. Sglavo
Keyword(s):  
Viscous Flow ◽  
Silica Glass ◽  
Porous Silica ◽  
Flash Sintering ◽  
Porous Silica Glass

Magnetic behavior of superparamagnetic Fe nanocrystals confined inside submicron-sized spherical silica particles

2004 ◽  
Vol 69 (9) ◽  
Author(s):  
P. Tartaj ◽  
T. González-Carreño ◽  
O. Bomatí-Miguel ◽  
C. J. Serna ◽  
P. Bonville
Keyword(s):  
Magnetic Behavior ◽  
Silica Particles ◽  
Spherical Silica ◽  
Spherical Silica Particles

Photocatalytic Isomerization of Butene-2 on Porous Silica Glass

1977 ◽  
Vol 104 (4-6) ◽  
pp. 309-320 ◽  
Author(s):  
A. Morikawa ◽  
M. Hattori ◽  
K. Yagi ◽  
K. Otsuka
Keyword(s):  
Silica Glass ◽  
Porous Silica ◽  
Porous Silica Glass

Synthesis of spherical silica particles and their thermal behavior

1987 ◽  
Vol 3 (1) ◽  
pp. 86
Author(s):  
Yasuo Azuma ◽  
Yoshimi Tajima ◽  
Nobuo Ōshima ◽  
Kensuke Suehiro
Keyword(s):  
Thermal Behavior ◽  
Silica Particles ◽  
Spherical Silica ◽  
Spherical Silica Particles

scholarly journals Carbon Dioxide Capture in Homogeneous and Heterogeneous Surfaces of Porous Silica Glass

Processes ◽  
2020 ◽  
Vol 8 (10) ◽  
pp. 1260
Author(s):  
Chontira Boonfung ◽  
Chaiyot Tangsathitkulchai ◽  
Atichat Wongkoblap
Keyword(s):  
Carbon Dioxide ◽  
Functional Groups ◽  
Adsorption Isotherms ◽  
Silica Glass ◽  
Surface Defects ◽  
Porous Silica ◽  
Surface Heterogeneity ◽  
Slit Pore ◽  
Porous Silica Glass ◽  
Carbon Dioxide Co2

Experimental and simulation studies for carbon dioxide (CO2) adsorption on porous silica glass were performed to reveal how surface heterogeneity can affect the adsorption mechanism of CO2. In performing the simulation, the structure of porous silica glass was modeled as a slit pore consisting of parallel walls of connected SiO4 units. The adsorption isotherms of CO2 at 283 K were generated for a series of pore widths using a Monte Carlo ensemble. The defective surfaces created by random removal of surface atoms and the surfaces containing hydroxyl functional groups were chosen to represent the surface heterogeneity for the simulation tasks. The isotherms derived for the defective surfaces showed a rapid adsorption at low pressures because of the stronger interaction between the rough nonuniform surfaces and CO2 molecules. For the role of surface functional groups, the adsorption isotherms dramatically increased with an increasing number of functional groups. The amount of CO2 adsorbed for randomly placed functional groups was greater than that for the presence of functional groups at the pore edges. The proper control of surface heterogeneity by manipulating both the amounts of hydroxyl surface groups and surface defects should help enhance the efficient capture of CO2 in porous silica glass.

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