Naphthenic acids (NAs) are widely present in crude oil and oil sands process-affected water
(OSPW). NAs in crude oil lead to corrosion problems, promote emulsion formation, decrease …

Chemical characterization of petroleum is a challenging task due to its inherently complex
nature. For example, crude oil is believed to have as many or more compounds than the …

Given the ill-defined term “naphthenic acids”(NAs), we will classify NAs as the carboxylic
acids found naturally in crude oil, which include both classic NAs (c-NAs, monoacids) and ox …

The forecast of an increase in the consumption of petroleum products, together with the
growing scarcity of new deposits, makes it necessary to take full advantage of existing ones …

Naphthenic acids (NAs), present in a typical Brazilian acid crude oil and its thermal
degradation products, were investigated using two separation methodologies: solid-phase …

The objective of this work is to present the effect on a crude oil pipeline of corrosion by
naphthenic acid (NA) and sulfur (S), which are responsible for small crack initiation and …

Carboxylic acids (CAs), common oxygen-containing compounds in petroleum samples,
have been paid high attention in several areas, including petroleum geochemistry …

Petroleum is an extremely heterogeneous material. It consists of a wide range of aliphatic,
aromatic, and compounds containing heteroatoms such as metals, sulfur, and nitrogen. The …

Naphthenic Acids (NA) are important oil extraction subproducts. These chemical species are
one of the leading causes of marine pollution and duct corrosion. For this reason …

Crude oil acidity, usually quantified through total acid number (TAN) and mainly due to
carboxylic compounds, is a main problem because causes high corrosion rates and fouling …