Production of nano choline stearate soap by surface activators and adding it to gasolin as an emission reduction agent

Subject Areas : environmental management

Arsia Khanfekr ¹ ( MSc. Student of Ceramic, Science and Research Branch, Islamic Azad University )
Mani Azadmand ² ( BSc. of Ceramic, Science and Research Branch, Islamic Azad University )
Morteza Amroni Hossaini ³ ( PhD in Organic Chemistry, Materials Research Center, SAPCO )

Received: 2007-05-10 Accepted : 2007-07-11 Published : 2009-09-23

Keywords: : Nano, Choline Stearate, automobile emission, Gasoline,

Abstract :

Oxidation and polymerization of olefin and heavy aromatic compounds of gasoline cause precipitation in carburetors, injection systems, and combustion compartments of engines. Imperfect combustion of fuel leads to an increase in the amount of emitted gases (CO, NOX and HC). To prevent precipitation and reduce the pollution of such engines, choline stearate soap which is synthesized as nano structure, has been studied as a new additive cleaning agent. In this study, the researchers chose a suitable surface activator and by using it, they prepared a permanent emulsion from the nano soap. Then, the emulsion was added to gasoline in different amounts, and the pollution test was carried out for the emitted gases. The results show that applying nano choline stearate as an oxidizing compound with a high cleaning capacity results in an average decrease of 30-50% of the two important pollutants (CO & HC) depending on the type of automobile and the amount of emulsion used in its fuel; however, it does not have any positive effect on an increase or decrease in the amount of NOX.