Study of thermal behavior of CrO3 using TG and DSC

Sajadi, S. A. A.; Khaleghian, M.

doi:10.1007/s10973-013-3597-y

Cited by 11 publications

(5 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The control sample peaks in XRD pattern were observed at 2θ=21.33°, 26 [24]. However, XRD of treated CrO 3 sample exhibited peaks at 2θ=21.39°, 26.13°, 26.51°, 31.32°, 37.63°, and 38.11°.…”

Section: X-ray Diffraction Study (Xrd)mentioning

confidence: 88%

Characterization of Physical, Thermal and Structural Properties of Chromium (VI) Oxide Powder: Impact of Biofield Treatment

Trivedi¹,

Tallapragada²,

Branton³

et al. 2015

J Powder Metall Min

View full text Add to dashboard Cite

Section: X-ray Diffraction Study (Xrd)mentioning

confidence: 88%

Characterization of Physical, Thermal and Structural Properties of Chromium (VI) Oxide Powder: Impact of Biofield Treatment

Trivedi¹,

Tallapragada²,

Branton³

et al. 2015

J Powder Metall Min

View full text Add to dashboard Cite

“…These peaks may indicate the presence of Cr 2 O 3 . This compound can be formed when CrO 3 remains in the mixture and decomposes into Cr 2 O 3 during thermal treatment [46]. The Cr 2 O 3 reference pattern (ICDD 38-147) is shown in Figure 10 for comparison.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Graphite Intercalation Compounds with Sulfuric Acid

et al. 2022

View full text Add to dashboard Cite

In this work, graphite intercalation compounds (GICs) were synthesized using three different oxidizers: (NH4)2S2O8, K2S2O8, and CrO3 with and without P2O5 as a water-binding agent. Furthermore, the samples obtained were heat-treated at 800 °C. Specimens were characterized by optical microscopy, Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), and scanning electron microscopy (SEM). The correlation between different characteristic parameters of the Raman analysis has shown that the use of CrO3 results in a much higher structural disorder compared to the products obtained using persulfate oxidizers. Narrowing the correlation set revealed that minimal defect concentration can be reached by using K2S2O8, while the use of (NH4)2S2O8 causes a slightly higher concentration of defects. It was also established that the additional use of P2O5 can help to achieve more effective intercalation and has a positive effect on the formation of the stage I GIC phase. After heat treatment, the intercalated products mostly return to a graphite-like structure; however, the samples obtained with CrO3 stand out with the most significant changes in their surface morphology. Therefore, analysis suggests that GICs obtained using persulfate oxidizers and P2O5 could be a candidate to produce high-quality graphene or graphene oxide.

show abstract

“…b inversion; so the ratio of this area to the sample weight (W) gives the enthalpy (DH) of the a ? b inversion related to the cristobalite content of sample [10]. In this equation, v is a constant value which is related to the cell, sensitivity, and time [4] and can be calculated by above information and the enthalpy inversion.…”

Section: Methodsmentioning

confidence: 99%

“…School of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST), Tehran, Iran e-mail: rnaghizadeh@iust.ac.ir of organic and inorganic materials [10][11][12][13]. Since enthalpy of the reactions or transformations was calculated via DSC analysis, the literature was in lack of reliable reports relating the phase content to enthalpy of the reaction or transformation.…”

Section: Introductionmentioning

confidence: 99%

A novel method for quantitative phase determination of cristobalite in ceramic cores using differential scanning calorimeter

Naghizadeh

Kazemi

Arianpour

et al. 2014

J Therm Anal Calorim

View full text Add to dashboard Cite

The present research aims at developing a new quantitative thermal analysis method based on differential scanning calorimeter for determination of cristobalite phase content in ceramic cores. For this purpose, various control samples with different amounts of cristobalite phase were made based on the chemical composition of silica-based ceramic cores and analyzed via differential scanning calorimetry (DSC) technique. The surface area under the a ? b cristobalite transition peak in the DSC curves was calculated via numerical integral of the peaks area, and the ratio of this area to the samples weight (A/W) was calibrated by cristobalite content of the samples. Afterward, for determining the cristobalite content of some industrial samples, the DSC patterns were plotted, and the A/W ratio of these samples was determined by the same method. Then the A/W ratios of the industrial samples were fitted on the calibration line, and the cristobalite content was derived using the equation of the calibration line. The method showed good accuracy, and the error values of the estimated cristobalite content of the industrial samples were below 2 %.

show abstract

Study of thermal behavior of CrO3 using TG and DSC

Cited by 11 publications

References 24 publications

Characterization of Physical, Thermal and Structural Properties of Chromium (VI) Oxide Powder: Impact of Biofield Treatment

Characterization of Physical, Thermal and Structural Properties of Chromium (VI) Oxide Powder: Impact of Biofield Treatment

Synthesis and Characterization of Graphite Intercalation Compounds with Sulfuric Acid

A novel method for quantitative phase determination of cristobalite in ceramic cores using differential scanning calorimeter

Contact Info

Product

Resources

About