2012
DOI: 10.1590/s0103-50532012000700021
|View full text |Cite
|
Sign up to set email alerts
|

Mesophase evolution in heat-treated solid petroleum pitches

Abstract: Uma combinação de técnicas analíticas foi utilizada para acompanhar a evolução da mesofase em pixes de petróleo em fase sólida. As amostras foram caracterizadas por dessorção a laser assistida por matriz, seguida de espectrometria de massas por tempo de vôo (MALDI-TOF-MS), ressonância magnética nuclear de 13 C ( 13 C NMR) de alto campo, 1 H NMR de baixo campo, ressonância eletrônica de spin (EPR), microscopia ótica polarizada e análise termogravimétrica (TGA). A análise por MALDI-TOF-MS revelou uma distribuiçã… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

0
9
0

Year Published

2014
2014
2024
2024

Publication Types

Select...
4
1

Relationship

0
5

Authors

Journals

citations
Cited by 7 publications
(9 citation statements)
references
References 34 publications
0
9
0
Order By: Relevance
“…Note that at the softening point (corresponding to 240 °C), pitch converts into a viscous liquid (inset of Figure b and Video S5, Supporting Information) . Beyond 400 °C, the proportion of hydrogen gradually decreases due to the volatilization of H 2 and CH 4 . Therefore, the proportion of carbon increases consistently up to 900 °C, resulting in a carbon‐dominant structure after carbonization (≈99.3 wt% at 900 °C) (Table S1, Supporting Information).…”
mentioning
confidence: 99%
See 4 more Smart Citations
“…Note that at the softening point (corresponding to 240 °C), pitch converts into a viscous liquid (inset of Figure b and Video S5, Supporting Information) . Beyond 400 °C, the proportion of hydrogen gradually decreases due to the volatilization of H 2 and CH 4 . Therefore, the proportion of carbon increases consistently up to 900 °C, resulting in a carbon‐dominant structure after carbonization (≈99.3 wt% at 900 °C) (Table S1, Supporting Information).…”
mentioning
confidence: 99%
“…Using in situ transmission electron microscopy (TEM), we have found that pitch‐coated Si nanoparticles do not crack upon lithiation, whereas conventional acetylene‐coated Si nanoparticles show complete fracturing of the coating layers. Comparing the other carbon coating methods, pitch, which is specifically derived from petroleum, is well known as a cheap carbon coating source for conventional graphite anodes and as an ingredient of synthetic graphite and carbon fiber . However, the factors responsible for its superior mechanical strength have not been fully investigated .…”
mentioning
confidence: 99%
See 3 more Smart Citations