scholarly journals Silver-functionalized silica aerogel: towards an understanding of aging on iodine sorption performance

RSC Advances ◽  
2018 ◽  
Vol 8 (56) ◽  
pp. 31843-31852 ◽  
Author(s):  
Josef Matyáš ◽  
Eugene S. Ilton ◽  
Libor Kovařík
Keyword(s):  
Silica Aerogel ◽  
Functionalized Silica ◽  
Gas Streams

This manuscript elucidates the mechanism responsible for a decrease of iodine-sorption performance for Ag0-functionalized silica aerogel in the reprocessing off-gas streams.

scholarly journals Adsorption of Methyl Iodide on Reduced Silver‐Functionalized Silica Aerogel: Kinetics and Modeling

AIChE Journal ◽  
2020 ◽  
Author(s):  
Siqi Tang ◽  
Seungrag Choi ◽  
Yue Nan ◽  
Lawrence L. Tavlarides
Keyword(s):  
Methyl Iodide ◽  
Silica Aerogel ◽  
Functionalized Silica

Fabrication of silica aerogel and carbon–silica composite for dynamic adsorption of benzene from dry and wet gas streams

2021 ◽  
pp. 1-19
Author(s):  
Mohammadreza Alipour ◽  
Vinod Kumar Gupta ◽  
Mohamadreza Massoudinejad ◽  
Siamak Motahari ◽  
Saeed Motesaddi Zarandi
Keyword(s):  
Silica Aerogel ◽  
Dynamic Adsorption ◽  
Gas Streams ◽  
Silica Composite ◽  
Wet Gas

scholarly journals Methyl Iodide Adsorption on Reduced Silver-Functionalized Silica Aerogel: How Temperature Impacts the Adsorption?

2021 ◽  
Author(s):  
Siqi Tang ◽  
Seungrag Choi ◽  
Lawrence Tavlarides
Keyword(s):  
Methyl Iodide ◽  
Photoelectron Spectroscopy ◽  
Silica Aerogel ◽  
Reaction Rate ◽  
Reaction Pathway ◽  
Effect Of Temperature ◽  
Functionalized Silica ◽  
Contributing Factors ◽  
X Ray ◽  
Temperature Impacts

To understand the effect of temperature to the adsorption, 104 ppbv and 1044 ppbv methyl iodide (CHI) adsorptions on reduced silver-functionalized silica aerogel (Ag-Aerogel) at 100, 150 and 200 ℃ were performed. In the experiments, a significantly high uptake rate (3 – 4 times higher than that at 100 and 150 ℃) was observed for the 104 ppbv adsorption at 200 ℃. To explain such behavior, a potential reaction pathway was proposed and multiple physical analyses including nitrogen titration, x-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) were performed. Based on the results, the contributing factors appear to be the formation of different Ag-I components induced by temperature, higher silver site availability, decreasing diffusion limitation, and increasing reaction rate described by the Arrhenius relationship.

scholarly journals Synthesis and study of new functionalized silica aerogel poly(methyl methacrylate) composites for biomedical use

2014 ◽  
Vol 36 (2) ◽  
pp. 348-358 ◽  
Author(s):  
István Lázár ◽  
Helga Fruzsina Bereczki ◽  
Sándor Manó ◽  
Lajos Daróczi ◽  
György Deák ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Silica Aerogel ◽  
Functionalized Silica ◽  
Poly Methyl Methacrylate

scholarly journals Adsorption of Nickel and Chromium Ions by Amine-Functionalized Silica Aerogel

2018 ◽  
Vol 156 ◽  
pp. 03014
Author(s):  
Sudarat Sertsing ◽  
Thanaphat Chukeaw ◽  
Sitthiphong Pengpanich ◽  
Bawornpong Pornchuti
Keyword(s):  
Silica Aerogel ◽  
Solution Concentration ◽  
Functionalized Silica ◽  
Solution Ph ◽  
Chromium Ions ◽  
Amine Functionalized ◽  
Adsorption Capacities ◽  
Equilibrium Data ◽  
Langmuir Isotherm Model ◽  
Adsorption Equilibrium Data

In this study, silica aerogel was synthesized by drying at atmospheric pressure and modified further with aminopropyl triethoxysilane (APTES). The amine-functionalized silica aerogel was investigated as an adsorbent for removal of nickel and chromium ions. The effect of contact time, solution pH, and initial solution concentration were studied. The equilibrium was achieved within 60 min. The optimum pH was found to be 4. Adsorption equilibrium data were agreed fairly well with Langmuir isotherm model. Adsorption capacities for nickel and chromium ions were found to be 40.32 mg/g and 46.08 mg/g, respectively.

Sign in / Sign up

Export Citation Format

Share Document