Density and refractive index study of the ternary system benzene-ethanol-hexane

Aliaj, Fisnik; Bytyqi-Damoni, Arlinda; Syla, Naim

doi:10.1063/1.4944301

Cited by 4 publications

(6 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Data published by Aliaj et al. at 293.15 K were found mostly consistent to the results obtained in our work, with small deviations at high methanol concentrations. With exception of the value for pure methanol, these deviations were still within the error tolerance of the device used.…”

Section: Resultssupporting

confidence: 93%

“…, Arce et al. , and Herráez and Belda , some points omitted for legibility; dashed lines represent the refractive index at 293.15 K (Eq. ) and at 298.15 K (Eq.…”

Section: Resultsmentioning

confidence: 99%

“… as well as by Aliaj et al. . However, significant deviations were found in comparison to the values published in the CRC Handbook for Chemistry and Physics , especially for higher concentrations.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Combination of Refractometry and Densimetry – A Promising Option for Fast Raw Methanol Analysis

Martens

Hadrich

Nestler

et al. 2020

Chemie Ingenieur Technik

View full text Add to dashboard Cite

Besides water, raw methanol produced from steel mill gases within the Carbon2Chem® project contains dissolved carbon dioxide. Refractometry and densimetry were investigated as analysis methods to analyze raw methanol samples quickly and reliably. To verify existing calibration curves, a set of standard solutions from pure chemicals was produced. Experimental results differed significantly from published refractive index data, especially in the range of high methanol weight fractions, which are of particular interest for the Carbon2Chem® project.

show abstract

Section: Resultssupporting

confidence: 93%

“…, Arce et al. , and Herráez and Belda , some points omitted for legibility; dashed lines represent the refractive index at 293.15 K (Eq. ) and at 298.15 K (Eq.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Combination of Refractometry and Densimetry – A Promising Option for Fast Raw Methanol Analysis

Martens

Hadrich

Nestler

et al. 2020

Chemie Ingenieur Technik

View full text Add to dashboard Cite

show abstract

“…The data seem to support the finding that Δn tends to increase as the strength of interaction between the components of the mixture increases, thereby showing an opposite trend to that of V E values. This negative correlation of Δn with V E is a widely valid rule [3,7,38,43], and it may be used as a quick check on the consistency of the data pertaining to V E [43].…”

Section: Resultsmentioning

confidence: 99%

“…The work described in this paper belongs to a systematic study program concerning the measurement and mathematical description of various thermodynamic properties of binary and ternary liquid mixtures containing important compounds [1][2][3]. The study of thermodynamic properties of binary mixtures of alkanols with aromatics is of great importance both from a practical and theoretical point of view.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Properties of Ethanol + Pyridine, Ethanol + Benzene, and Pyridine + Benzene Mixtures at Temperature 298.15 K and Under Atmospheric Pressure

Zeqiraj¹,

Gjevori

LLOZANA

et al. 2023

International Journal of Thermodynamics

Self Cite

View full text Add to dashboard Cite

Experimental densities, viscosities, refractive indices, and sound speeds at temperature 298.15 K and atmospheric pressure are reported for the binary liquid mixtures of ethanol + benzene, ethanol + pyridine, and benzene + pyridine. From these experimental data, various thermodynamic excess and deviation properties were calculated and fitted by the Redlich-Kister polynomial to determine the adjustable coefficients and the standard deviations. The number of Redlich-Kister coefficients for significantly representing each thermodynamic property was optimized by applying the F-test. The variation of thermodynamic excess and deviation properties with composition has been interpreted in terms of molecular interactions between components of the mixture and structural effects. Furthermore, several theoretical and semi-empirical models were used to predict the refractive indices and sound speeds of the investigated mixtures. The predicting ability of each model was ascertained in terms of mean absolute percentage deviation between experimental and calculated data.

show abstract

Penentuan Kadar Total Fenol Fraksi N-Heksan, Etil Asetat, Dan Air Herba Pegagan (Centella asiatica (L) Urban)

Aprilianti,

Purgiyanti,

Barlian

2023

JIPP

View full text Add to dashboard Cite

Herba pegagan (Centella aciatica (L) Urban) merupakan salah satu jenis herba yang memiliki manfaat yang luas dan beragam. Herba ini mengandung senyawa bioaktif yaitu flavonoid, tanin dan fenol. Tujuan Penelitian ini yaitu untuk mengetahui dari pelarut mana yang paling besar mengandung kadar total fenol. Herba pegagan diekstraksi menggunakan metode maserasi menggunakan pelarut etanol 96% dengan perbandingan 1:3 yang dilakukan selama 3×24 jam. Ekstrak yang diperoleh kemudian di ekstraksi menggunakan metode fraksinasi bertingkat dengan pelarut non polar (nheksan), pelarut semi polar (etil asetat), dan pelarut polar (air). Hasil ekstraksi kemudian dilakukan identifikasi ekstrak dengan uji kualitatif yaitu uji warna dan untuk penentuan kadar fenol total menggunakan spektrofotometri UV-Vis menggunakan reagen Folin-Ciocalteu dimana hasilnya dinyatakan dalam Gallic Acid Equivalent (mg GAE/100 gram). Berdasarkan hasil penelitian dari ketiga fraksi menunjukkan fraksi etil asetat memiliki kandungan fenol sebesar 10,73 mg GAE/g, fraksi n-heksan sebesar 2,03 mg GAE/g dan fraksi air paling rendah kadar fenolnya yaitu sebesar 0,53 mg GAE/g. Penelitian ini menunjukkan bahwa fraksi etil asetat memiliki kadar fenol yang paling besar dibandingkan dengan fraksi lainnya.

show abstract

Density and refractive index study of the ternary system benzene-ethanol-hexane

Cited by 4 publications

References 10 publications

Combination of Refractometry and Densimetry – A Promising Option for Fast Raw Methanol Analysis

Combination of Refractometry and Densimetry – A Promising Option for Fast Raw Methanol Analysis

Thermodynamic Properties of Ethanol + Pyridine, Ethanol + Benzene, and Pyridine + Benzene Mixtures at Temperature 298.15 K and Under Atmospheric Pressure

Penentuan Kadar Total Fenol Fraksi N-Heksan, Etil Asetat, Dan Air Herba Pegagan (Centella asiatica (L) Urban)

Contact Info

Product

Resources

About