Formation of coal-based carbon nanotubes by Fe-K catalyst

Lv, Xuemei; Zhang, Yongfa; Wang, Ying; Zhang, Guojie; Liu, Jun; Lu, Yang

doi:10.1016/j.jaap.2021.105400

Cited by 13 publications

(6 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other coal‐based nanomaterials such as fullerenes, [ 10 ] NDs, [ 11 ] CNTs [ 12 ] have also been carefully investigated in recent years, as shown in Figure a–c. Unlike coal‐based CDs and FG, these nanomaterials are still in the early stage with TRLs less than 4.…”

Section: Other Coal‐based Nanomaterialsmentioning

confidence: 99%

“…CNTs are widely used as reinforcement fillers for composite materials and batteries. [ 12 ] Catalytic pyrolysis techniques, arc discharge and DC arc techniques have been reported for coal‐based single and multiwall CNT syntheses. [ 28 ] However, the yield and performance of coal‐based CNTs are inferior to those made from graphite by arcing methods.…”

Section: Other Coal‐based Nanomaterialsmentioning

confidence: 99%

“…The formation of coal‐derived carbon nanomaterials has been the topic of increased recent research efforts. This includes the synthesis of carbon dots (CDs), [ 8 ] graphene, [ 9 ] fullerenes, [ 10 ] nanodiamonds (NDs), [ 11 ] carbon nanotubes (CNTs), [ 12 ] carbon nanospheres, [ 13 ] and more. These carbon nanomaterials have been used in batteries, solar cells, capacitors, illumination devices, displays, bioimaging systems, drug delivery, anticounterfeiting, and composites, among others, [ 14,15 ] as shown in Figure .…”

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Coal‐Based Carbon Nanomaterials: En Route to Clean Coal Conversion toward Net Zero CO₂

Advincula

Ding

et al. 2023

Advanced Materials

View full text Add to dashboard Cite

As the world is committed to reach carbon peak by 2030 and net zero by 2050, the use of coal as an energy source is facing unprecedented challenges. According to the International Energy Agency (IEA), global annual coal demand is estimated to drop from more than 5640 million tonnes of coal equivalent (Mtce) in 2021 to 540 Mtce in 2050 under the net zero emission scenario, mostly being replaced by renewable energy such as solar and wind. Therefore, the coal industry is vigorously seeking alternative applications to keep it thriving, and nanotechnology can be one of the contributors. Herein, the challenges to coal-based carbon nanomaterials syntheses are outlined, along with a path toward commercialization. Coal-based carbon nanomaterials can be promising contributors to the concept of clean coal conversion, initiating its migration from an energy source to a high-value-added carbon source.

show abstract

Section: Other Coal‐based Nanomaterialsmentioning

confidence: 99%

Section: Other Coal‐based Nanomaterialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Coal‐Based Carbon Nanomaterials: En Route to Clean Coal Conversion toward Net Zero CO₂

Advincula

Ding

et al. 2023

Advanced Materials

View full text Add to dashboard Cite

show abstract

“…By adding iron to increase the heat transfer rate, Reddy et al prepared good quality CNTs and nanoparticles in the heat-treated coal char, and the diameters of carbon nanostructures increased with the agglomeration of Fe particles. Lv et al , successfully synthesized CNTs by the Fe-K catalytic pyrolysis of bituminous coal at 900 °C. K etches the amorphous carbon atoms of coal and C atoms dissolved on the Fe atom surface to form a Fe-C solid solution, leading to the growth of large numbers of CNTs.…”

Section: Introductionmentioning

confidence: 99%

Tuning Lignite Structure via Hydromodification To Promote the Formation of Coal-Based CNTs: Exploration for the Carbon Source of CNTs

et al. 2023

Self Cite

View full text Add to dashboard Cite

Although the preparation of coal-based carbon nanotubes (CNTs) has been realized in many studies, the relationship between carbon source structure of coal and CNT growth has not been studied in depth. In this study, we used lignite and KOH as raw material and catalyst and tuned lignite structure via hydrothermal modification to promote the formation of CNTs during catalytic pyrolysis. The main carbon source of CNTs was explored from the change of coal structure and pyrolysis characteristics. The results indicate that the CNT yield of lignite pyrolysis products is only 2.39%, but the CNT yield increases significantly after lignite was hydrothermally modified in a subcritical water–CO system. The graphitization degree, the order degree, and CNT content increase continuously with the increase in modification temperature, and C-M340 has the highest CNT content of 9.41%. Hydromodification promotes the rearrangement of aromatic carbon structures to generate more condensed aromatic rings linked by short aliphatic chains and aromatic ether bonds. The variation of these structures correlates well with the formation of CNTs and leads to the change in the carbon source components released during coal pyrolysis. Compared to lignite, modified coal releases more aromatic compounds, especially polycyclic aromatic hydrocarbons with ≥3 rings and phenols during catalytic pyrolysis, which is conducive to the transformation into carbon clusters and provides carbon sources for CNT growth. In addition, modified coal releases a slightly more carbon-containing gas (CH4 and CO) than lignite, which has a limited effect on the growth of CNTs. This study provides a novel and efficient method for enhancing the growth of CNTs by a molecular tailoring strategy of coal.

show abstract

Carbon nanotubes growth in modified bluecoke powders: Preparation and characterization, formation mechanism of CNTs, and potential application

Wu,

Shi,

Yang

et al. 2024

Advanced Powder Technology

View full text Add to dashboard Cite

Formation of coal-based carbon nanotubes by Fe-K catalyst

Cited by 13 publications

References 70 publications

Coal‐Based Carbon Nanomaterials: En Route to Clean Coal Conversion toward Net Zero CO₂

Coal‐Based Carbon Nanomaterials: En Route to Clean Coal Conversion toward Net Zero CO₂

Tuning Lignite Structure via Hydromodification To Promote the Formation of Coal-Based CNTs: Exploration for the Carbon Source of CNTs

Carbon nanotubes growth in modified bluecoke powders: Preparation and characterization, formation mechanism of CNTs, and potential application

Contact Info

Product

Resources

About

Formation of coal-based carbon nanotubes by Fe-K catalyst

Cited by 13 publications

References 70 publications

Coal‐Based Carbon Nanomaterials: En Route to Clean Coal Conversion toward Net Zero CO2

Coal‐Based Carbon Nanomaterials: En Route to Clean Coal Conversion toward Net Zero CO2

Tuning Lignite Structure via Hydromodification To Promote the Formation of Coal-Based CNTs: Exploration for the Carbon Source of CNTs

Carbon nanotubes growth in modified bluecoke powders: Preparation and characterization, formation mechanism of CNTs, and potential application

Contact Info

Product

Resources

About

Coal‐Based Carbon Nanomaterials: En Route to Clean Coal Conversion toward Net Zero CO₂

Coal‐Based Carbon Nanomaterials: En Route to Clean Coal Conversion toward Net Zero CO₂