A low-temperature synthesis of laurel oil alkanolamides directly from laurel oil and ethanolamine was carried out in essentially quantitative yields. The ethanolamine/laurel oil molar ratio used was 10:1. Even though amine served as a catalyst in the reaction, we used sodium methoxide at a ratio of 0.2-2% as a second catalyst. The reaction was complete in 1-9 h at room temperature. The identity of the amide was confirmed by IR and 13 C NMR spectroscopy.

In this work the activated pine cone was investigated as adsorbent to remove Remazol Brilliant Blue R from aqueous solution. The effects of various experimental parameters such as initial dye concentration, contact time, temperature, adsorbent dose and pH were examined. The adsorption of Remazol Brilliant Blue R from aqueous solution was increased with the increase in initial dye concentration, contact time, temperature, adsorbent dose but decreased with the increase in the pH. The results in this study indicated that the activated pine cone was an attractive candidate for removing Remazol Brilliant Blue R.

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KOLANCILAR*, H.; OYMAN, U.; J. Indian Chem. Soc. 80 (2003) 9, 853-857; Dep. Chem., Fac. Arts Sci., Univ. Trakya, TR-22030 Edirne, Turk.; Eng.) -M. Bohle