Preparation of high specific surface area activated carbon fiber by high-temperature vacuum activation and its superior water vapor adsorption for air humidity control

Chen, Jie; Yu, Qiongfen; Li, Ming; Sun, Shengnan; Zhan, Danya; Wang, Yunfeng; Z, Gu; Zhang, Ying

doi:10.1007/s10853-023-08205-z

Cited by 8 publications

(1 citation statement)

References 52 publications

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“…Notably, those exhibiting high porosity have been instrumental in advancing energy, environmental, and chemical technologies, thanks to their remarkable attributes including vast speci c surface area, superior electrical conductivity, and outstanding chemical stability [ 1 , 2 ]. Physical activation and chemical activation are the two main methods for preparing porous carbons [ 3 ]. Physical activation involves rst carbonizing the material, and then activating the carbonized material with oxidizing gases (such as carbon dioxide, water vapor, or air) at high temperatures to form new pore structures [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Porous graphene with high porosity derived from nitrogen-doped graphene aerogel for vapor adsorption and lithium–sulfur batteries

Liu,

Zhao,

Zhou

et al. 2024

J Porous Mater

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Graphene-based aerogels have garnered signi cant attention due to their combined advantages derived from both graphene and aerogels. Nevertheless, a key limitation in their practical applications arises from their relatively modest speci c surface area and pore volume. In this study, porous graphene materials with high porosity are synthesized through the physical and chemical activation of nitrogen-doped graphene aerogel (NGA) using carbon dioxide and KOH as activating agents. Utilizing various characterization techniques, including scanning electron microscopy, nitrogen adsorption-desorption measurements, and X-ray photoelectron spectroscopy, the morphology, porous characteristics, and chemical composition of porous graphene are elucidated. The carbon dioxide-activated NGA (CNGA) maintains the spongy aerogel structure and exhibits a hierarchical porous structure encompassing micropores, mesopores, and macropores. Notably, CNGA exhibits a high speci c surface area (2030 m 2 g -1 ) and pore volume (5.4 cm 3 g -1 ). Given its intriguing properties, CNGA demonstrates good performance as a gas adsorbent and sulfur host.

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Section: Introductionmentioning

confidence: 99%

Porous graphene with high porosity derived from nitrogen-doped graphene aerogel for vapor adsorption and lithium–sulfur batteries

Liu,

Zhao,

Zhou

et al. 2024

J Porous Mater

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Optimization of crude glycerol purification from grease trap waste biodiesel production: exploring the synergistic effect of mixed extraction alcohols on enhanced glycerol purity

Al‐Haimi,

Luo,

et al. 2024

J of Chemical Tech & Biotech

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BACKGROUNDThe purification of crude glycerol, a byproduct of biodiesel production and grease trap waste, is essential for its utilization in high‐value applications. Achieving exceptionally pure glycerol without relying on energy‐intensive vacuum distillation during transesterification is of substantial economic interest.RESULTSThis investigation focuses on crafting a purification process involving chemical treatment (neutralization), adsorption and extraction. The assessment of the neutralization process using sodium hydroxide (NaOH) and potassium hydroxide (KOH) revealed their comparative efficacy. Activated carbon adsorption was used to reduce coloration in crude glycerol, with weights set at 4 and 8 wt%. Efficient salt extraction from crude glycerol was explored using solvents such as methanol, ethanol and isopropyl alcohol in varying mass ratios to crude glycerol (1:1 and 2:1). The study also examined the synergistic effects and impact of mixing alcohol solvents. Optimal conditions for achieving high purity (92.44%) were identified as the combination of KOH, 8 wt% activated carbon and a 2:1 ratio of a mixture of the three alcohols.CONCLUSIONThe combined effects of employing a mixture of alcohols significantly enhance the extraction process, resulting in the efficient and successful purification of glycerol. These outcomes offer valuable insights into improving the extraction process in industrial settings, leading to the production of high‐quality glycerol products. © 2024 Society of Chemical Industry (SCI).

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A rectangular-wave-honeycomb composite adsorbent with sorption thermal energy storage for continuous solar drying of mushroom

Li,

Yu,

et al. 2024

Energy Conversion and Management

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Preparation of high specific surface area activated carbon fiber by high-temperature vacuum activation and its superior water vapor adsorption for air humidity control

Cited by 8 publications

References 52 publications

Porous graphene with high porosity derived from nitrogen-doped graphene aerogel for vapor adsorption and lithium–sulfur batteries

Porous graphene with high porosity derived from nitrogen-doped graphene aerogel for vapor adsorption and lithium–sulfur batteries

Optimization of crude glycerol purification from grease trap waste biodiesel production: exploring the synergistic effect of mixed extraction alcohols on enhanced glycerol purity

A rectangular-wave-honeycomb composite adsorbent with sorption thermal energy storage for continuous solar drying of mushroom

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