Analysis method of methanol fuel metal corrosion inhibitor

Abstract

The invention discloses an analysis method of a methanol fuel metal corrosion inhibitor. The analysis method comprises the following steps: step 1, taking a currently commercial methanol gasoline corrosion inhibitor as a reference, detecting on an instrument through a gas chromatography-mass spectrometry instrument, and analyzing to obtain related similar components by comparing with a gas-mass spectrum, so as to narrow an effective additive research range; step 2, carrying out further testing by utilizing an electrochemical workstation, configuring a series of related concentration groups andrelated metal electrodes, and carrying out polarization curve mapping on an electrochemical instrument respectively to analyze a corrosion inhibition effect of the corrosion inhibitor, an optimal preparation ratio of the corrosion inhibitor and a corresponding corrosion mechanism, so as to realize optimal selection of the corrosion inhibitor. According to the analysis method disclosed by the invention, benzotriazole and cyclohexane have a very good corrosion inhibition effect on metal copper and steel, so that the corrosion inhibition of methanol fuel on metal is improved and a metal surfaceis not rusted.

Description

technical field [0001] The invention relates to the technical field of methanol fuel, in particular to an analysis method for methanol fuel metal corrosion inhibitors. Background technique [0002] Methanol gasoline for vehicles is a new type of vehicle fuel developed in recent years. It is to adapt to my country's current resource and environmental problems that are becoming more and more serious, the energy resources that are rich in coal, poor in oil and gas, and the impact of the world's political and economic structure on the energy supply and demand situation. And developed. Vigorously developing alternative energy, especially low-carbon energy, is not only an important part of maintaining my country's oil security, but also a strategic choice to support my country's sustainable energy development in the future. Methanol fuel, as a new alternative energy to adjust the traditional energy structure and promote the development of circular economy, is a typical low-carbon ...

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Problems solved by technology

The research method is the more traditional weight-hanging method. This method is more intuitive and the effect is generally more obvious. However, the exploration of the corrosion mechanism has certain defects, and it generally takes a long time, and the variables are not easy to control, which is not conducive to a series of variables. Another method is to use electrochemical methods to optimize the selection. This method has the advantages of fast and convenient screening of the optimal concentration of corrosion inhibitor and the optimal compound ratio.

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