Standardizing and reducing sulfur content in gasolines and gases

Abstract

It is shown that the normative-technical documents currently in effect for liquefied gases -the feedstock for producing high-octane gasoline additive -do not allow control of total sulfur content in the gases. In view of the new sulfur content requirements for fuels, it is essential to revise without delay the normative-technical documents for liquified hydrocarbon gases in terms of the list of controllableparameters and the standards for hydrogen sulfide, mercaptan, and total sulfur content.

Adsorptive Desulfurization of Industrial Wastewater

“…Modern technologies of the desulfurization of light oil and gas condensate are based on the extraction of sulfur-containing compounds with 10-12% sodium hydroxide solution [2] or their catalytic air oxidation [3]. In the first case, sulfide (mercaptide)-alkaline solutions are formed, and in the second case, there are aqueous solutions of alkyl disulfides, sodium salts of sulfite, thiosulfate, and alkyl sulfonic acids [3,4], which need to be further purified.…”

Oxidation of substituted phenols with chlorine dioxide

“…Oxidation of phenols with various oxidants was studied in sufficient detail [2][3][4][5][6][7]. Oxidation of phenols with chlorine dioxide (ClO 2 ) was studied in [8][9][10]; it was shown that 2,6-disubstituted phenols are thus oxidized to the corresponding 1,4-quinones (yield 67-95%) or diphenoquinones; 2,4-disubstituted phenols react with ClO 2 to form 4-alkyl-p-quinols.…”