scholarly journals Stabilization of soybean oil by flaxseed gum and NMR characterization of its oil–water interface

2019 ◽  
Vol 17 (1) ◽  
pp. 892-899
Author(s):  
Mei-Qin Feng ◽  
Meng Wang ◽  
Jian Sun ◽  
Xing-Lian Xu ◽  
Guang-Hong Zhou
Keyword(s):  
Soybean Oil ◽  
Water Interface ◽  
Nmr Characterization ◽  
Oil Water ◽  
Flaxseed Gum

Characterization of the microwave-induced boiling behaviour at oil/water interface

2020 ◽  
Vol 159 ◽  
pp. 120107
Author(s):  
Satoshi Sonobe ◽  
Yosuke Shibata ◽  
Yusuke Asakuma ◽  
Anita Hyde ◽  
Chi Phan
Keyword(s):  
Water Interface ◽  
Oil Water

Electrochemical characterization of an oil/water alternately wetted rotating cylinder electrode

CORROSION ◽  
10.5006/3638 ◽  
2020 ◽  
Author(s):  
Linxiao Zheng ◽  
Ziming Wang ◽  
Guang-Ling Song
Keyword(s):  
Rotating Cylinder ◽  
Water Interface ◽  
Current Waveform ◽  
Longitudinal Displacement ◽  
Flow Conditions ◽  
Rotating Cylinder Electrode ◽  
Electrochemical Current ◽  
Oil Water ◽  
Displacement Speed

To characterize the corrosion at oil/water interfaces, a vertically adjustable rotating cylinder electrode (VA-RCE) was developed based on the concept of “alternate wetting cell”, in which the electrochemical current reflecting the wet state of the RCE surface can be continuously monitored. Under a sinusoidal moving mode, the current waveform varied with the rotation rate and the longitudinal displacement speed or amplitude of the VA-RCE, implying that the dynamic wetting behavior of the VA-RCE surface in the oil/water interface region was influenced by the flow conditions; the replacement of oil phase by water phase became easier with increasing flow rate and alternating frequency of change between water wet and oil wet. The results also indicated that the wettability of the VA-RCE surface could be modified by the formation of corrosion products. All the results suggested that the VA-RCE could be used to quantitatively characterize the dynamic water/oil wetting state and the corrosion at an oil/water interface in a multiphase flow.

scholarly journals Characterization of Solids from Oilfield Emulsions

2005 ◽  
Vol 13 (6) ◽  
pp. 28-31
Author(s):  
Richard W. Cloud ◽  
Rebecca L. Ramsey ◽  
Robert A. Pultz ◽  
Michael K. Poindexter
Keyword(s):  
Crude Oil ◽  
Gas Evolution ◽  
Water Interface ◽  
Case Scenario ◽  
Pressure Drops ◽  
Liquid Phases ◽  
Oil Water ◽  
Water Gas ◽  
Oil Gas

Production of crude oil is generally accompanied by several other product phases, namely water, gas and solids. Pressure drops across chokes, concomitant gas evolution (due to pressure drops) and turbulence caused by various pipeline configurations can create difficult-to-resolve emulsions. Natural crude oil surfactants and solids exacerbate the problem further by migrating to the newly created oil-water interface and stabilizing the unwanted emulsions. Once the fluids arrive at the production facilities, a variety of vessels are employed to separate the oil, gas and water. Depending on the wettability of the solids, they will exit via one or both of the liquid phases. In a worse case scenario, the solids will accumulate at the oil-water interface.

Sodium caseinate/flaxseed gum interactions at oil–water interface: Effect on protein adsorption and functions in oil-in-water emulsion

2015 ◽  
Vol 43 ◽  
pp. 137-145 ◽  
Author(s):  
Qiangzhong Zhao ◽  
Zhao Long ◽  
Jing Kong ◽  
Tongxun Liu ◽  
Dongxiao Sun-Waterhouse ◽  
...  
Keyword(s):  
Protein Adsorption ◽  
Sodium Caseinate ◽  
Interface Effect ◽  
Water Interface ◽  
Water Emulsion ◽  
Oil In Water ◽  
Oil Water ◽  
Oil In Water Emulsion ◽  
Flaxseed Gum

scholarly journals Soybean Oil Epoxidation: Kinetics of the Epoxide Ring Opening Reactions

Processes ◽  
2020 ◽  
Vol 8 (9) ◽  
pp. 1134 ◽  
Author(s):  
Elio Santacesaria ◽  
Rosa Turco ◽  
Vincenzo Russo ◽  
Riccardo Tesser ◽  
Martino Di Serio
Keyword(s):  
Soybean Oil ◽  
Ring Opening ◽  
Epoxidized Soybean Oil ◽  
Performic Acid ◽  
Epoxide Ring ◽  
Water Interface ◽  
Brønsted Acidity ◽  
Epoxide Ring Opening ◽  
Brönsted Acidity ◽  
Oil Water

The epoxide ring opening reaction (ROR) can be considered as the most important side reaction occurring in the epoxidation of soybean oil reaction network. This reaction consistently reduces the selectivity to epoxidized soybean oil (ESBO). The reaction is also important for producing polyols and lubricants. In this work, the reaction was studied in different operative conditions to evaluate the effect on ROR rate respectively: (i) The Bronsted acidity of the mineral acid (H2SO4 or H3PO4), used as catalyst for promoting the oxidation with hydrogen peroxide of formic to performic acid, that is, the reactant in the epoxide formation; (ii) the concentration of the nucleophilic agents, normally present during the ESBO synthesis like HCOOH, HCOOOH, H2O, H2O2; (iii) the stirring rate that changes the oil–water interface area and affects the mass transfer rate; (iv) the adopted temperature. Many different kinetic runs were made in different operative conditions, starting from an already epoxidized soybean oil. On the basis of these runs two different reaction mechanisms were hypothesized, one promoted by the Bronsted acidity mainly occurring at the oil–water interface and one promoted by the nucleophilic agents, in particular by formic acid. As it will be seen, the kinetic laws corresponding to the two mentioned mechanisms are quite different and this explain the divergent data reported in the literature on this subject. All the kinetic runs were correctly interpreted with a new developed biphasic kinetic model.

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