Solubilities of 2,6‐Diamino‐3,5‐dinitropyrazine‐1‐oxide in the Binary Mixtures of DMSO+H 2 O, DMF+H 2 O and NMP+H 2 O in the Temperature Range from 293.15 to 323.15 K under the Atmospheric Pressure

2019 ◽  
Vol 45 (3) ◽  
pp. 503-508
Author(s):  
Yuqiao Wang ◽  
Shaohua Jin ◽  
Tujuan Li ◽  
Guanchao Lan ◽  
Xiaopeng Zhang ◽  
...  
Keyword(s):  
Binary Mixtures ◽  
Atmospheric Pressure ◽  
Temperature Range

scholarly journals Experimental Research on NO2 Viscosity and Absorption for (1-Ethyl-3-methylimidazolium Trifluoroacetate + Triethanolamine) Binary Mixtures

Molecules ◽  
2021 ◽  
Vol 26 (22) ◽  
pp. 6953
Author(s):  
Baoyou Liu ◽  
Xinyu Wang ◽  
Jie Tian ◽  
Peiwen Zhang ◽  
Huilong Yang ◽  
...  
Keyword(s):  
Binary Mixtures ◽  
Mole Fraction ◽  
Experimental Research ◽  
Atmospheric Pressure ◽  
Molar Fraction ◽  
Absorption Capacity ◽  
Obvious Effect ◽  
Binary Blends ◽  
Temperature Range

The viscosity (9.34–405.92 mPa·s) and absorption capacity (0.4394–1.0562 g·g−1) of (1-ethyl-3-methylidazolium trifluoroacetate + triethanolamine) binary blends atmospheric pressure in the temperature range of 303.15–343.15 K and at different mole fractions of [EMIM] [TFA] have been carried out. The molar fraction of [EMIM] [TFA] dependence of the viscosity and absorption capacity was demonstrated. The addition of a small amount of [EMIM] [TFA] into TEA led to rapidly decreased rates of binary blends’ viscosity and absorption capacity. However, the viscosity and absorption of binary blends did not decrease significantly when [EMIM] [TFA] was increased to a specific value. Compared with the molar fraction of the solution, the temperature had no obvious effect on viscosity and absorption capacity. By modeling and optimizing the ratio of viscosity and absorption capacity of ([EMIM] [TFA] + TEA), it is proven that when the mole fraction of [EMIM] [TFA] is 0.58, ([EMIM] [TFA] + TEA) has the best viscosity and absorption capacity at the same time. In addition, at 303.15 K, ([EMIM] [TFA] + TEA) was absorbed and desorbed six times, the absorption slightly decreased, and the desorption increased.

Transformation of 1-Butene over Synthetic Zeolites

1992 ◽  
Vol 57 (4) ◽  
pp. 869-881 ◽  
Author(s):  
Italo Ferino ◽  
Roberto Monaci ◽  
Vincenzo Solinas ◽  
Lucio Forni ◽  
Antonio Rivoldini ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Continuous Flow ◽  
Liquid Mixture ◽  
Isomerization Reaction ◽  
Reaction Conditions ◽  
Title Reaction ◽  
Y Zeolites ◽  
Temperature Range ◽  
Flow Microreactor ◽  
Synthetic Zeolites

The behaviour of several zeolites as catalysts for the title reaction has been investigated by means of a continuous flow microreactor. Runs performed at atmospheric pressure indicated that at 423 K the completely protonic forms of the zeolites catalyze just the isomerization reaction. In the case of Y zeolites, oligomerization occurs only over the partially decationated samples, in the temperature range between 373 and 423 K and W/F between 0.2 and 22 gcath/g1-but, to an extent which depends on the reaction conditions. Most of the catalysts were tested also under pressure (4.05 MPa) at 423 K. The protonic forms of Y and ZSM-5 zeolites seem promising catalysts in terms of both conversion and selectivity to oligomers. The 1-olefins account for 30% of the entire olefinic mixture. The octenes, which account for 70% of the liquid mixture, are mostly formed of dimethylhexenes. Trimers are also formed during the reaction and, in the very particular case of H[B]ZSM-5, tetramers are produced.

l-Asparagine-assisted synthesis of flower-like β-Bi2O3 and its photocatalytic performance for the degradation of 4-phenylphenol under visible-light irradiation

RSC Advances ◽  
2015 ◽  
Vol 5 (91) ◽  
pp. 74977-74985 ◽  
Author(s):  
Xin Xiao ◽  
Shunheng Tu ◽  
Chunxia Zheng ◽  
Huan Zhong ◽  
Xiaoxi Zuo ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Atmospheric Pressure ◽  
Room Temperature ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Temperature Range

By introducing l-asparagine as a ligand, a flower-like precursor of Bi2O3 was prepared by a simple reflux process under atmospheric pressure. β-Bi2O3 was then conveniently obtained by decomposing the precursor and stabilized in a temperature range from room temperature to 420 °C due to the surface-coordination effects of CO32− derived from l-asparagine.

scholarly journals A Comparison Study on Molecular Interaction of an Acidic Organophosphoric Extractant with Substituted Aromatic Hydrocarbon (p-xylene/toluene) at 303.15K

2020 ◽  
Vol 11 (3) ◽  
pp. 10052-10058
Keyword(s):  
Binary Mixtures ◽  
Ultrasonic Velocity ◽  
Aromatic Hydrocarbons ◽  
Molecular Interaction ◽  
Atmospheric Pressure ◽  
Composition Range ◽  
Isentropic Compressibility ◽  
Extraction Process ◽  
Comparison Study ◽  
Intermolecular Free Length

In the present study, the excess molar volume (VE) and the deviations in intermolecular free length (ΔLf), isentropic compressibility (Δβs), acoustic impedance (ΔZ), and ultrasonic velocity (ΔU) were calculated using the experimentally measured values of density (ρ) and ultrasonic velocity (U) of binary mixtures of an acidic organophosphoric extractant (DEHPA) with two substituted aromatic hydrocarbons, i.e., p-xylene and toluene at 303.15K and atmospheric pressure, 0.1MPa over the entire composition range of DEHPA. The results of both binary mixtures have been presented graphically and compared in terms of molecular interaction between unlike molecules of the mixtures, which outcome may be applied in the solvent extraction process.

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