STUDYING THE INHIBITORY PROPERTIES OF KETOXIMES IN HYDROGEN SULFIDE-CONTAINING ENVIRONMENTS

Abstract

The creation and development of technology for the production of highly effective environmentally friendly inhibitors is an important area for modern low-tonnage chemistry and the oil and gas industry. The application of the principles of «green chemistry» and circulation economics in this matter makes it possible to reduce the cost of production of inhibitory compositions by using waste or excess production of organic compounds as raw materials. One of these classes of compounds are ketones and their derivatives, the production of which is common in small- and large-tonnage chemical enterprises. Poorly studied ketone derivatives are ketoximes, a product of the interaction of ketones and amino compounds; an important advantage in the context of studying the inhibitory properties of ketoximes is the presence in their structure of the functional group C=N –OH with electronegative N, O atoms and a double bond at the same time, which have good solubility in water, are nontoxic and biodegradable. Selected compounds, in particular butanone oxime (methyl ethyl ketoxime), which is a fairly common organic compound used in industry to inhibit the polymerization process. The effect of a number of ketoximes (with a C4 chain length) on the corrosion resistance of carbon steel in an imitation of NACE formation water saturated with carbon dioxide and hydrogen sulfide has been studied. The influence of medium temperature and exposure time on inhibitory properties has been established. The influence of the «structure – property», kinetic and physico-chemical parameters of interaction, as well as the mechanism of adsorption on the metal surface are investigated.