Determination of the Solid–Liquid Phase Diagram of the Binary System Acrylic Acid + Propionic Acid

2012 ◽  
Vol 57 (4) ◽  
pp. 1209-1212 ◽  
Author(s):  
Marie Le Page Mostefa ◽  
Hervé Muhr ◽  
Edouard Plasari ◽  
Michel Fauconet
Keyword(s):  
Phase Diagram ◽  
Liquid Phase ◽  
Binary System ◽  
Acrylic Acid ◽  
Propionic Acid ◽  
Solid Liquid

Determination of the Solid–Liquid Phase Diagram of the Binary System Propionic Acid/Water

2016 ◽  
Vol 61 (2) ◽  
pp. 806-812 ◽  
Author(s):  
Thouaïba Htira ◽  
Claudia Cogné ◽  
Emilie Gagnière ◽  
Denis Mangin
Keyword(s):  
Phase Diagram ◽  
Liquid Phase ◽  
Binary System ◽  
Propionic Acid ◽  
Acid Water ◽  
Solid Liquid

Solid-liquid phase diagram of the binary system benzil + 2,2-dimethoxy-1,2-diphenylethanone

1994 ◽  
Vol 39 (1) ◽  
pp. 179-180 ◽  
Author(s):  
Nazzareno Santilli ◽  
Paolo De Filippis ◽  
Angelo Chianese
Keyword(s):  
Phase Diagram ◽  
Liquid Phase ◽  
Binary System ◽  
Solid Liquid

scholarly journals Solid-Liquid Phase Diagram of the Binary System Octadecanoic Acid and Octadecanol and the Thermal Chemical Property of the Composition at Eutectic Point

2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
Can Liu ◽  
Kaiyu Zhao ◽  
Yafei Guo ◽  
Liping Guo ◽  
Tianlong Deng
Keyword(s):  
Phase Diagram ◽  
Liquid Phase ◽  
Binary System ◽  
Phase Change ◽  
Mass Fraction ◽  
Eutectic Point ◽  
Octadecanoic Acid ◽  
Phase Change Temperature ◽  
Change Temperature ◽  
Solid Liquid

Phase diagram is a powerful tool to guide the exploitation of thermal energy materials. Heat storage technology of phase-change material (PCM) was widely used to solve major energy utilization problems on large energy consumption and low utilization efficiency. In this work, a novel solid-liquid phase diagram of the binary system octadecanoic acid (C18-acid) + octadecanol (C18-OH) was investigated using the differential scanning calorimeter (DSC). The phase-change temperature and phase-change enthalpies against the composition of C18-acid and C18-OH were determined experimentally, and then the binary phase diagram of T–X (X expresses the mass fraction of C18-OH in the two components of C18-acid and C18-OH) was established for the first time. The phase diagram belongs to a binary simple system with one eutectic point, and the content of C18-OH at eutectic point is 0.4 in mass fraction. Neither solid solution nor copolymer was formed. The thermal chemical properties on the phase-change latent heat (Q), phase-change temperature (Tp), and the thermal conductivity (λ) for the composition at the eutectic point of the binary system are 198.7 J·g−1, 44.2°C, and 0.2352 W·m−1·K−1, respectively. This result indicates that the material at eutectic point has a great potential to be used as energy storage material for supply of heat and scouring bath.

Solid-liquid phase diagram of the binary system pyridine + sulfolane

1989 ◽  
Vol 139 ◽  
pp. 1-9
Author(s):  
Liliana Jannelli ◽  
Luigi Lisbo Parrella
Keyword(s):  
Phase Diagram ◽  
Liquid Phase ◽  
Binary System ◽  
Solid Liquid

Multi-walled Carbon Nanotubes Reinforced into Hollow Fiber by Chitosan Sol-gel for Solid/Liquid Phase Microextraction of NSAIDs from Urine Prior to HPLC-DAD Analysis

2019 ◽  
Vol 20 (5) ◽  
pp. 390-400 ◽  
Author(s):  
Nabil N. AL-Hashimi ◽  
Amjad H. El-Sheikh ◽  
Rania F. Qawariq ◽  
Majed H. Shtaiwi ◽  
Rowan AlEjielat
Keyword(s):  
Carbon Nanotubes ◽  
Liquid Phase ◽  
Hollow Fiber ◽  
Sol Gel ◽  
Liquid Phase Microextraction ◽  
Extraction Device ◽  
Multi Walled Carbon Nanotubes ◽  
Solid Liquid ◽  
Walled Carbon Nanotubes

Background: The efficient analytical method for the analysis of nonsteroidal antiinflammatory drugs (NSAIDs) in a biological fluid is important for determining the toxicological aspects of such long-term used therapies. Methods: In the present work, multi-walled carbon nanotubes reinforced into a hollow fiber by chitosan sol-gel assisted-solid/ liquid phase microextraction (MWCNTs-HF-CA-SPME) method followed by the high-performance liquid chromatography-diode array detection (HPLC–DAD) was developed for the determination of three NSAIDs, ketoprofen, diclofenac, and ibuprofen in human urine samples. MWCNTs with various dimensions were characterized by various analytical techniques. The extraction device was prepared by immobilizing the MWCNTs in the pores of 2.5 cm microtube via chitosan sol-gel assisted technology while the lumen of the microtube was filled with few microliters of 1-octanol with two ends sealed. The extraction device was operated by direct immersion in the sample solution. Results: The main factors influencing the extraction efficiency of the selected NSAIDs have been examined. The method showed good linearity R2 ≥ 0.997 with RSDs from 1.1 to 12.3%. The limits of detection (LODs) were 2.633, 2.035 and 2.386 µg L-1, for ketoprofen, diclofenac, and ibuprofen, respectively. The developed method demonstrated a satisfactory result for the determination of selected drugs in patient urine samples and comparable results against reference methods. Conclusion: The method is simple, sensitive and can be considered as an alternative for clinical laboratory analysis of selected drugs.

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