Synthesis of novel reduced graphene oxide decorated β-cyclodextrin epichlorohydrin composite and its application for Cr(VI) removal: Batch and fixed-bed studies

2022 ◽  
Vol 278 ◽  
pp. 119630
Author(s):  
Dibya Ranjan Rout ◽  
Hara Mohan Jena
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Fixed Bed ◽  
Reduced Graphene

A Study of Promoters Effect on Fe on Reduced Graphene Oxide Catalyst Performance in Fischer-Tropsch Synthesis System

2017 ◽  
Vol 735 ◽  
pp. 143-147 ◽  
Author(s):  
AL Hassan Mohammed Nasser ◽  
Haitham M. Elbery ◽  
Hasan N. Anwar ◽  
Islam K. Basha ◽  
Hamada A. Elnaggar ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Fixed Bed ◽  
Tropsch Synthesis ◽  
Fixed Bed Reactor ◽  
Promoting Effect ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Reduced Graphene ◽  
Fe Nanoparticles

In this work the Fischer-Tropsch synthesis reaction was catalyzed by reduced graphene oxide supported Fe nanoparticles catalysts in a fixed bed reactor. Also the influence of promotion by K and Mn on the catalytic activity of Fe nanoparticles was investigated. The systems showed acceptable CO conversions reaching as high as 96.2%. The selectivities of the C1-5 ranged from 38 to 62%. There was a very high CO2 selectivity which was explained by incomplete reduction of the catalysts. The Anderson-Schultz-Flory parameter was calculated and varied between 0.25 and 0.3. The strongest promoting effect was achieved by the K promoter which tended to reduce light product selectivities and CO2 production the most.

scholarly journals Removal of Sb(III) by 3D-reduced graphene oxide/sodium alginate double-network composites from an aqueous batch and fixed-bed system

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xiuzhen Yang ◽  
Tengzhi Zhou ◽  
Renjian Deng ◽  
Zhenya Zhu ◽  
Atif Saleem ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Specific Surface ◽  
Reduced Graphene Oxide ◽  
Sodium Alginate ◽  
Surface Area ◽  
Specific Surface Area ◽  
Fixed Bed ◽  
Chloride Concentration ◽  
Double Network ◽  
Reduced Graphene

AbstractWe created 3D-reduced graphene oxide/sodium alginate double network (GAD) beads to address the problem of local water pollution by antimony. GAD is a novel material with the high specific surface area of graphene and biosecurity of sodium alginate. Due to the introduction of graphene, the thermal stability and specific surface area of GAD are enhanced, as shown from the FTIR, TGA, BET, Raman, and XRD characterizations. The influence of different environmental variables-such as the pH, dosage, temperature, contact time, and sodium chloride concentration on the Sb(III) sorption with GAD-was investigated. The adsorption results fit well with both the pseudo-second order (R2 > 0.99) and Freundlich (R2 > 0.99) isotherm models. The temperature rise has a negative influence on the adsorption. The Langmuir adsorption capacity is 7.67 mg/g, which is higher than many adsorbents. The GAD results from the fixed-bed adsorption experiment were a good fit with the Thomas model (R2 > 0.99). In addition, GAD appears to be a renewable and ideal adsorbent for the treatment of antimony pollution in aqueous systems.

High Toughness Inorganic Solid Electrolytes via the Use of Reduced Graphene-Oxide

2020 ◽  
Author(s):  
Christos E. Athanasiou ◽  
Mok Yun Jin ◽  
Cristina Ramirez ◽  
Nitin P. Padture ◽  
Brian W. Sheldon
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Solid Electrolytes ◽  
High Toughness ◽  
Reduced Graphene

Direct growth of thermally reduced graphene oxide on carbon fiber for enhanced mechanical strength

2020 ◽  
Vol 193 ◽  
pp. 108010
Author(s):  
Beom-Gon Cho ◽  
Shalik Ram Joshi ◽  
Jaekyo Lee ◽  
Young-Bin Park ◽  
Gun-Ho Kim
Keyword(s):  
Graphene Oxide ◽  
Carbon Fiber ◽  
Mechanical Strength ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene ◽  
Direct Growth
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