SciELO - Scientific Electronic Library Online

 
vol.42 issue4Use of polyethylene glycol as organic additive in Copper electrodeposition over stainless steel cathodesModeling conventional two-dimensional drying of radiata pine based on transversal effective diffusion coefficient author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

  • Have no cited articlesCited by SciELO

Related links

  • Have no similar articlesSimilars in SciELO

Share


Latin American applied research

Print version ISSN 0327-0793

Abstract

Synthesis of docosanoic and tetracosanoic acid from alcohols using a task-specific ionic liquid catalyst. Lat. Am. appl. res. [online]. 2012, vol.42, n.4, pp.377-380. ISSN 0327-0793.

Catalytic batch oxidation of docosanol to docosanoic acid and tetracosanol to tetracosanoic acid was performed using hydrogen peroxide as oxidant and a functionalized ionic liquid composed of an Aliquat® cation and a peroxotungstophosphate anion acting as catalyst. Conversion of 76% and selectivity of 60.2% were obtained after 6 hours for docosanol oxidation at optimal operational conditions (temperature of 90°C; total-H2O2/alcohol molar ratio = 3; alcohol/catalyst mass ratio = 300). In the case of tetracosanol oxidation 85% conversion and 68% selectivity were reached in the same time interval at optimal operational conditions (temperature of 90°C; total- H2O2/ alcohol molar ratio = 5; alcohol/final-catalyst mass ratio = 50). In both cases the oxidant and the catalyst were continuously added throughout the reaction time, thus enabling continuous reaction performance. The batch results obtained in this study confirm the technical feasibility of operating a process to produce both these high molecular acids from alcohols as renewable raw materials.

Keywords : Docosanol; Docosanoic Acid; Tetracosanol; Tetracosanoic Acid; Quaternary Ammonium Peroxotungstophosphate Catalyst; Ionic Liquid.

        · text in English     · English ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License