Raman spectroscopic study of aqueous alkali sulfate solutions at high temperature and pressure to yield precipitation

2009 ◽  
Vol 49 (3) ◽  
pp. 303-309 ◽  
Author(s):  
Yuta Matsumoto ◽  
Hiroyuki Harada ◽  
Kazuko Yui ◽  
Hiroshi Uchida ◽  
Kiyoshi Itatani ◽  
...  
Keyword(s):  
High Temperature ◽  
Spectroscopic Study ◽  
Aqueous Alkali ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study ◽  
Sulfate Solutions ◽  
High Temperature And Pressure ◽  
Temperature And Pressure

High-Pressure–High Temperature (HP-HT) Stability of Polytetrafluoroethylene: Raman Spectroscopic Study Up to 10 GPa and 600 ℃

2017 ◽  
Vol 71 (8) ◽  
pp. 1842-1848 ◽  
Author(s):  
Anna Yu. Likhacheva ◽  
Artem D. Chanyshev ◽  
Sergey V. Goryainov ◽  
Sergey V. Rashchenko ◽  
Konstantin D. Litasov
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Spectroscopic Study ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study ◽  
High Pressure High Temperature

High-temperature Raman spectroscopic study of vanadoborate Na 3 VO 2 B 6 O 11

2016 ◽  
Vol 25 (3) ◽  
pp. 037802 ◽  
Author(s):  
Ji Zhang ◽  
De-Ming Zhang ◽  
Qing-Li Zhang ◽  
Shao-Tang Yin
Keyword(s):  
High Temperature ◽  
Spectroscopic Study ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study ◽  
O 11

High temperature Raman spectroscopic study of the micro-structure of a caesium triborate crystal and its liquid

CrystEngComm ◽  
2011 ◽  
Vol 13 (8) ◽  
pp. 3030 ◽  
Author(s):  
Hou Min ◽  
You Jinglin ◽  
Simon Patrick ◽  
Zhang Guochun ◽  
Wan Songming ◽  
...  
Keyword(s):  
High Temperature ◽  
Spectroscopic Study ◽  
Micro Structure ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study

scholarly journals Raman Spectroscopic Study of Coal Samples during Heating

2019 ◽  
Vol 9 (21) ◽  
pp. 4699 ◽  
Author(s):  
Yingfang Xie ◽  
Jinglin You ◽  
Liming Lu ◽  
Min Wang ◽  
Jian Wang
Keyword(s):  
High Temperature ◽  
Spectroscopic Study ◽  
Spectral Characteristics ◽  
Blue Shift ◽  
Carbonaceous Materials ◽  
Temperature Dependent ◽  
Spectral Parameters ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study ◽  
Raman Spectral

Raman spectroscopy can be used to record the characteristic spectra of carbonaceous materials. The D and G bands are the most popular and most important spectral characteristics when discussing carbonaceous materials. In this paper, a Raman spectroscopic study of different coals was first carried out using a 355 nm wavelength laser beam as an excitation source. The spectral parameters of the resultant spectra were evaluated and analyzed. Raman spectral characteristics of different kinds of coals were explored. The high temperature-dependent Raman spectra of the coals were further collected in a temperature range from 298 to 1473 K in order to investigate the transformations of the internal structure of the coals during the pyrolysis process. An abnormal blue shift of the G band occurred at moderate temperature (600–900 K), and the intensity of the G band became weaker at high temperatures, indicating pyrolysis and graphitization of the sample at moderate and high temperature, respectively.

Sign in / Sign up

Export Citation Format

Share Document