Abstract: The present invention relates to the field of laboratory-scale sample preparation, which describes a methodology for the specific isolation of tetraprotic naphthenic acids, called ARN acids, from residual naphthenate deposits from petroleum production. The method consists of cleaning the naphthenate deposit, converting the naphthenate salts to naphthenic acids and isolating the ARN acids from the other organic acids, using a silica-based sorbent material with aminopropyl functional groups, previously selected for an efficient elution of different functional groups and polarities.

Abstract: The present invention describes a plasma reactor for processing natural gas and/or light hydrocarbons, including biomethane and biogas, with a plasma torch that does not require the use of cathode shielding gas (shielding gas), as well as a process for reforming using a plasma reactor for the production of synthesis gas and carbonaceous materials from natural gas and/or light hydrocarbons.