... ) . Abstract This study aims to i) determine the dissociation constant (pK_a) of acetic acid (HAc) in monoethylene glycol (MEG) which is used to calculate the relative amount of undissociated HAc at different pH, and ii) investigate the influence of MEG on CO₂ corrosion of carbon steel...

... that the role of acetic acid (HAc) in oilfield brines is both extremely complex and somewhat controversial. Although it is commonly believed that the presence of this organic compound enhances both the general and the localized corrosion rate of carbon steel, HAc has recently been reported to also act as a weak...

... to the difference of passive layer composition. buffer solution high pressure CO₂ sodium acetate acetic acid localized corrosion passive film Mott-Schottky semiconductor properties super martensitic stainless steel XPS Buffer systems consist of an acid-base pair (conjugate acid-base...

... acetic acid buffers INTRODUCTION In the oil and gas industry, especially for high pressure deep wells, there is a strong need of high strength casing with some sulfide stress cracking (SSC) resistance. However, B. Craig reported that when low alloy steel yield strength reaches about 827 MPa (120 ksi...

...The effect of acetic acid on CO₂ corrosion has been studied in the literature. ^{1 - 4} Experimental work has also been done on the effect of small amounts of H₂S on CO₂ corrosion of carbon steel, and the different chemical and electrochemical reactions...

...This paper discusses the buffering stability of acetic acid and acetate buffer for SSC test condition at ambient pressure for sour-resistant stainless steel by changing amount of acetic acid and acetate, and theoretically compares to high-pressurized CO₂ and bicarbonate buffering system...

...EXPERIMENTAL Experiments with simulated formation and condensed water conditions, and with and without acetic acid, have been carried out in Hastelloy ^† autoclaves. The total volume of each autoclave was 2 litres, and a filling level of 75% was used (1.5 litres of test solution...

... of acetic acid in the gas. The temperature in the experiments was 60 and 90 °C, and Mono Ethylene Glycol (MEG) was present in the bulk aqueous phase. The water condensation rates used in the experiments were calculated from multiphase flow simulations for the planned pipelines. The experimental results...

...Abstract The objective of this work was to study the effect of the total acidity and of the hydration on the corrosiveness of fuel ethanol. At the first part of the study, different ethanol samples with different total acidities were produced by: adding acetic acid in different quantities...

... almost the same MEG content as the aqueous phase at the bottom of line. This paper discusses various TLC modeling approaches, in particular how the corrosion rates are affected by MEG and organic acids. top of line corrosion TLC corrosion modeling organic acids acetic acid glycol MEG INTRODUCTION...

... two-electrode electrochemical cell configuration in CO₂ and acetic acid environments. Initially, there is a progressive reduction in corrosion rate with time in CO₂ environment due to the formation of protective iron carbonate film on the metal surface. However, the presence...

... and acetic acids, make bio-oil quite acidic. Unless the carboxylic acids are removed, bio-oil presents corrosion issues for materials used to construct the systems used for production, processing, transport and storage of the bio-oil. Techniques have been developed to improve characterization of the bio...

...The formation of iron carbonate, as the main corrosion product on mild steel exposed in CO₂ environments, may retard the corrosion rate, but the presence of acetic acid is thought to damage the FeCO₃ layer and temporarily increase the corrosion rate ² . In spite...

...Table 2 Experimental conditions for FeCO₃ dissolution on polarized (-700mV) platinum coated quartz crystal at different acetic acid concentrations Test solution Deionized water + 0.1 wt.% NaCl Test material Platinum coated EQCM quartz crystal Temperature 80°C Total...

...Garsany et al. ⁶ studied the role of acetate ion on the corrosion rate of carbon steel in a CO₂ environment using a rotating disk electrode. Their voltammograms showed two “waves,” apparently resulting from the reduction of hydrogen ions and acetic acid. The authors...

... a rotating cylinder electrode (RCE) setup to test their BOL inhibition properties. Top-of-the-Line Corrosion acetic acid volatile corrosion inhibitor INTRODUCTION Top-of-the-Line (TOL) corrosion in wet gas pipelines has been a severe problem for over half a century in both sweet and sour conditions...

... of the pyrolyzers. This paper will report on results of these analyses and corrosion studies. corrosion pyrolysis oil bio-oil biomass formic acid acetic acid carboxylic acids hydrotreated pyrolysis oil INTRODUCTION (1) Author to 865-574-4453 Thermochemical processing of biomass can produce solid, liquid...

... and localized corrosion susceptibility of alloys 316L (UNS S31603), Ti 6-4 (UNS R56400), Ti 6-2-4-6 (UNS R56260), C276 (UNS N10276) and a tantalum (Ta) surface alloy on 316L in high temperature mineral and organic acids was assessed. The two acidizing environments that were studied included 10% acetic acid...

... (SEM) equipped with an energy dispersive spectroscopy (EDS). Iron (II) content was determined by spectrophotometry at 508 nm as ortho-phenanthrolin complex. Abstract Based on laboratory and field data, the presence of acetic acid (HAc) in oilfield brines has been found to enhance both the occurrence...

... of H₂S (up to 0.13 bars) and acetic acid (up to 1000 ppm) on the more standard CO₂ Top of the Line Corrosion. A comprehensive analysis on the effect of these parameters on the type of corrosion product film formed at the top of the line is performed. Top of the line corrosion H₂S...