The Synthesis Of A New Class Of Quaternary Phosphonium Salt Biocides, Performance And Application Research

Tri-n-butyl tetradecyl phosphonium chloride, Tri-n-butyl dodecyl phosphonium chloride and Tri-n-butyl hexadecyl phosphonium chloride were synthesized through Sn2 reaction, using 1-chlorotetradecane, 1-chlorododecane, 1-chlorododecane and Tri-n-butyl phosphine as reactants.In order to obtain maximal yield of Tri-n-butyl tetradecyl phosphonium chloride, effect of the ratio of two reactants, reaction temperature, reaction time, reaction Solvent and adding rate were studied by single factor method and perpendicular experiment. The condition of obtaining maximal yield of Tri-n-butyl tetradecyl phosphonium chloride was founded. The condition of obtaining maximal yield of Tri-n-butyl dodecyl phosphonium chloride and Tri-n-butyl hexadecyl phosphonium chloride was also founded through the same method.Anti-bacterial performances for heterotrophy, Fe-bacteria and SRB of the three quaternary phosphonium were studied, compared with quaternary ammonium, bis-(quaternary ammonium) and interior-(quaternary ammonium). The inhibiting corrosion performances were also studied.The structure of the three quaternary phosphonium were characterized by FT-IR, NMR and TGA.