July 2009
The preparation of methyl benzoate and methyl salicylate on silica gel column
An investigation of the acid catalyzed esterification of benzoic acid and salicylic acid with methanol on silica gel solid support system was carried out. The method involved distilling continuously or refluxing the alcohol over the packed column. The conventional method of esterification was also carried out to assess the advantages of the packed column method on improved yield and easier work-up procedure. This...
July 2009
Molecular complex piperidine-CO2
Piperidine absorbs CO2 in air to form the molecular complex: piperidinium-1-piperidinecarboxylate which was characterized by X-ray single crystal diffraction. The crystal structure was determined to be triclinic, space group P - 1 with a = 6.403(3) Å, b = 9.437(5) Å, c = 9.928(5) Å, ï¡ = 104.90(4)°, ï¢ = 102.35(4)°, g = 94.63(4)°, Z = 2. The complex is...
July 2009
Physiochemical properties and micronutrients status of farmland soils in Abraka, Nigeria
Micronutrients are as important as macronutrients in crop production. It is therefore imperative to have an idea of their availability in farmlands. To this end 20 soil samples were collected from 10 locations in Abraka (10 topsoil and 10 subsoil) to ascertain the level of total micronutrients. The total cationic micronutrients were determined using atomic absorption spectrophotometer (AAS). Fe has a range between 2214...
Advertisement
Advertisement
