Modification of synthetic mesophase pitch with iron oxide, Fe2O3

Wang, Yong Gang; Korai, Yozo; Mochida, Isao; Nagayama, Katsuhiro; Hatano, Hitomi; Fukuda, Noriyoshi

doi:10.1016/s0008-6223(00)00281-5

Cited by 38 publications

(37 citation statements)

References 19 publications

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“…It is well known that some iron compounds [26,27,28] can catalyze the formation of graphite at relatively low temperatures. Graphite may precipitate upon decomposition of Fe 3 C (cementite) near 650°C during the production of cast iron, in a process known as "dusting".…”

Section: (I)mentioning

confidence: 99%

Optimization of carbon coatings on LiFePO4

Doeff

Wilcox

Kostecki

et al. 2006

Journal of Power Sources

228

139

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The electrochemical performance of LiFePO 4 in lithium cells is strongly dependent on the structure (disordered/graphene or D/G ratio) of the in situ carbon produced during synthesis from carbon-containing precursors. Addition of pyromellitic acid (PA) prior to final calcination results in lower D/G ratios, yielding a higher-rate material. Further improvements in electrochemical performance are realized when graphitization catalysts such as ferrocene are also added during LiFePO 4 preparation, although overall carbon content is still less than 2 wt. %.

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Section: (I)mentioning

confidence: 99%

Optimization of carbon coatings on LiFePO4

Doeff

Wilcox

Kostecki

et al. 2006

Journal of Power Sources

228

139

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“…It is known that the ideal graphite has an interlayer distance (d 002 ) of 3.354 A [19,23], the d 002 values of the SGCs are a little larger than that of the ideal graphite, indicating that these samples have somewhat turbostratic structures. It is well documented that Fe is an effective catalyst for the graphitization transformation of amorphous carbonaceous materials, and the catalytic graphitization process involves the formation of iron carbide at high temperatures and the subsequent precipitation of graphite from the carbide species [27]. In this work, the template materials have well dispersed iron species on their pore walls [23], and these iron species can induce the graphitization transformation of the carbon materials derived from the infiltrated phenolic resin in the mesopore channels.…”

Section: Resultsmentioning

confidence: 89%

“…The wide-angle XRD patterns of the SGCs show four well resolved diffraction peaks at around 25.8, 43.1, 53.3 and 78.4 (Fig. 1d), which can be assigned to the 002, 10, 004 and 110 reflections of graphitized carbons [19,27], indicating that the SGCs have graphitized structures. The interlayer distance (d 002 ) between the graphene planes were calculated based on the Bragg formula and the results are displayed in Table 1.…”

Section: Resultsmentioning

confidence: 99%

Nanocasting synthesis of graphitized ordered mesoporous carbon using Fe-coated SBA-15 template

Yan

Dou

et al. 2013

Materials Chemistry and Physics

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h i g h l i g h t s< One-pot method produces well-ordered Fe-coated SBA-15. < Template-catalysis method produces graphitized ordered mesoporous carbon. < Carbons derived from low-molecular-weight phenolic resin are quite graphitizable. a r t i c l e i n f o b s t r a c tOrdered mesoporous carbons with high porosities and graphitized structures were synthesized by a template-catalysis method using low-molecular-weight phenolic resin as carbon precursor and Fecoated SBA-15 as both template and catalyst. The synthesis route involves the following steps: (a) the synthesis of mesoporous Fe-coated SBA-15 through a one-pot method, (b) the infiltration of a lowmolecular-weight phenolic resin into the porosity of the Fe-coated SBA-15, (c) the carbonization and catalytic graphitization of the infiltrated phenolic resin at 900 C, and (d) the removal of the Fe-coated SBA-15 template. The X-ray diffraction, nitrogen sorption, transmission electron microscopy and scanning electron microscopy were used to characterize the materials, and the results indicate that the prepared carbon materials have well-ordered mesoporous structures replicated from the templates, and graphitized structures can be observed on the carbon frameworks, depending on the iron content in the templates.

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“…7. It showed formation of an anisotropic flow texture while coke with iron oxide additive improved development of a mosaic texture [47]. This determines the effect of iron oxide as a barrier to mesophase development.…”

Section: Feedstock Selectionmentioning

confidence: 92%

“…On the other hand, Wang et al [47] obtained fine mosaic microstructures of coke due to effect of iron oxide. When the cokes resulted with and without iron oxide additive were compared, the coke without iron oxide additive exhibited better quality of formation of anisotropic as described in Fig.…”

Section: Feedstock Selectionmentioning

confidence: 99%

Preparation of needle coke from petroleum by-products

Halim¹,

Im²,

Lee³

2013

Carbon letters

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Needle coke is an important material for graphite electrodes. Delayed coking is used to produce needle coke. Producing good quality needle coke is not simple because it is a multi-parameter controlled process. Apart from that, it is important to understand the mechanism responsible for the delayed coking process, which involves mesophase formation and uniaxial rearrangement. Temperature and pressure need to be optimized for the different substances in every feedstock. Saturate hydrocarbon, aromatic, resin and asphaltene compounds are the main components in the delayed coking process for a low Coefficient Thermal Expansion value. In addition, heteroatoms, such as sulphur, oxygen, nitrogen and metal impurities, must be considered for a better graphitization process that prevents the puffing effect and produces better mesophase formation.

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Modification of synthetic mesophase pitch with iron oxide, Fe2O3

Cited by 38 publications

References 19 publications

Optimization of carbon coatings on LiFePO4

Optimization of carbon coatings on LiFePO4

Nanocasting synthesis of graphitized ordered mesoporous carbon using Fe-coated SBA-15 template

Preparation of needle coke from petroleum by-products

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