African Journal of
Pure and Applied Chemistry

  • Abbreviation: Afr. J. Pure Appl. Chem.
  • Language: English
  • ISSN: 1996-0840
  • DOI: 10.5897/AJPAC
  • Start Year: 2007
  • Published Articles: 357

Table of Content: 30 September, 2011; 5(10)

September 2011

Hydrogenation of 2H-azirine by aluminium lithium hydride over palladium catalyst

The hydrogenation of 2H-azirine by the aluminium lithium hydride (AlLiH4) in the presence of palladium used like catalyst, was studied by Hartree Fock method. For the modelling of reaction, the catalyst was represented by one atom of palladium; we took one molecule of 2H-azirine for two molecules of aluminium lithium hydride. The reaction gave a saturated derivative of 2H-azirine (C2H3N) called aziridine (C2H5N). On the...

Author(s): Kuevi U. A., Atohoun Y. G. S. and Mensah J. B.

September 2011

Comparison of low temperature coal tar solvent extractible and bound biomarker distribution for correlation studies

Solvent extractible and bound biomarker profile for low temperature coal tar were compared using the biomarker ratios obtained from the selective ion resolution for pristane, phytane, n-C17 and hopanesratios of GC-MS results, with a view to ascertaining whether or not the data for asphaltene-derived biomarker can be used for effective correlation studies, and if serious alterations arising from biodegradation and...

Author(s): Ivwurie, W., Snape, C. E. and Sun, C.

September 2011

Comparison of aromatics released via hydropyrolysis with their solvent extractable counterpart for biodegraded Nigeria crude oil

The molecular profiles of aromatics generated through hydropyrolysis with the free (maltene) counterpart were compared, with a view to assessing the effectiveness of using molecular information for the aromatics bound in asphaltene matrix for polycyclic aromatic hydrocarbon source apportionment studies. The results obtained from gas chromatograph-mass spectrometry (GC-MS) total and selected ion molecular profiles of...

Author(s): Ivwurie, W, Snape, C. E and Sun, C

September 2011

Effect of beta irradiation on plasticized polyvinyl chloride

Various polyvinyl chloride (PVC) formulations were compounded with two types of plasticizers- diocthylphthalate (DOP) and epoxidized rubber seed oil (ERSO). The samples were subjected to beta irradiation at a rate of 2.4 mGy/h to total dose of 14.4mGy. The mechanical properties and the plasticizer permanence such as leaching and migration of plasticizers from the various samples were evaluated. The tensile strength...

Author(s): Ikhuoria E. U., Ogundele K. T. and Osinkolu G. A.

September 2011

The textural property of chromium pillared clay

Hydroxy-chromium beidellite is of interest for use in catalysis and as adsorbents. The micro porosity of the materials differing in pillar density has been explored. Nitrogen adsorption data obtained at very low relative pressures were used. This paper determines the influence of the OH-Cr species on the structure and texture of modified dioctahedral smectites (beidellite). Minerals varying in cation exchange capacity...

Author(s): S. Arfaoui-Rhouma, N. Frini-Srasra, and E. Srasra

September 2011

Thermal degradation of poly(vinyl chloride) in the presence of Ximenia americana and Balanites aegyptiaca seed oils

Ximenia americana seed oil (XSO) and Balanites aegyptiaca seed oil (BSO) were soxhlet extracted and characterized. The iodine values were 158.3 and 102.6 gI2 100 g-1 for XSO and BSO, respectively. The oxirane content for the epoxidized oil derivatives, EXSO and EBSO, were 4.9 and 4.1%, respectively. Kinetic studies of thermal degradation of poly (vinyl chloride), (PVC) in the...

Author(s): Olujinmi Moses Folarin, Ighodalo Clement Eromosele and Catherine Oluyemisi Eromosele

September 2011

Anthocyanidin 3-galactosides from flowers of Abrus canescens Bak

Three anthocyanins, the 3-galactoside of delphinidin (1) (8.5 %), petunidin (2) (9.2 %) and malvidin (3) (73.8 %) were isolated from the deep red-purple flowers of Abrus canescensby a combination of chromatographic techniques. Their structures were elucidated by on-line diode array detection chromatography and homo- and hetero-nuclear magnetic resonance (NMR) techniques.   Key words: Abrus...

Author(s): Robert Byamukama, George Ogweng, Monica Jordheim, Øyvind M. Andersen and Bernard T. Kiremire