Preparation of tetrazole derivatives as cetane improver

Abstract

Tetrazole derivatives can be prepared by direct synthesis from sodium azide and arylnitrile derivatives or introduction of nitroaryl group into the tetrazole derivatives. Finally, tetrazole derivatives were obtained by treatment with hydrochloric acid and identified by spectroscopic techniques such as Infrared Spectroscopy, Nuclear Magnetic Resonance Spectroscopy, and Mass Spectroscopy. Tetrazole derivatives can be dissolved in alcohol. They are easy by blend with diesel fuel. Tetrazole derivatives are effective in increasing cetane number only when used in a concentration of 0.05% by weight. The antiknock property was determined by cetane number and cetane index which cetane number increased by 0.1-0.2 cetane unit. It can be upograde diesel fuel qualitively.