The production of nicotimamide during the thermal desorption of 3-cyanopyridine (3CYP) from Ni2+- and Al3+-exchanged bentonite. A TG-MS, variable temperature DRIFTS and XRD study

FORSYTH, J., BREEN, C., HUGHES, T. and YARWOOD, J. (2004). The production of nicotimamide during the thermal desorption of 3-cyanopyridine (3CYP) from Ni2+- and Al3+-exchanged bentonite. A TG-MS, variable temperature DRIFTS and XRD study. Physical Chemistry Chemical Physics, 6 (12), 3184-3191.

Full text not available from this repository.
Link to published version:: https://doi.org/10.1039/b402934h
Related URLs:

    Abstract

    Samples of air-dried and heated Ni2+- and Al3+-exchanged bentonite (SWy-2) have been exposed to 3-cyanopyridine (3CYP) vapour for six days. The resulting intercalates were studied using variable temperature XRD, DRIFTS, thermogravimetry (TG) and TG-MS. The amount of water co-adsorbed with 3CYP did not influence the initial 13.2 spacing of the Al3+-complex but the d-spacing of the heated Ni2+-sample was ca. 5 less that the 21.5 spacing of its air-dried counterpart. This difference in layer spacings suggests that 3CYP adopts an arrangement in which the plane of the aromatic ring is parallel with the aluminosilicate layer in the Al3+-clay whereas in the Ni2+-form the plane of the ring is perpendicular to the clay surface. TG-MS confirmed that 3CYP and water were the major species desorbed from all samples and that the contraction in the d-spacing upon heating the Ni2+-3CYP complex arose from loss of these species. The appearance of a band near 1680 cm–1 in the VT-DRIFTS spectra at temperatures above 150 °C indicated the formation of amide(s). Correlation with TG-MS data confirmed the transformation of small quantities of 3CYP to nicotinamide. Some 3CYP was protonated in the Al3+-samples.

    Item Type: Article
    Additional Information: © Royal Society of Chemistry
    Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Polymers Nanocomposites and Modelling Research Centre > Polymers, Composites and Spectroscopy Group
    Identification Number: https://doi.org/10.1039/b402934h
    Page Range: 3184-3191
    Depositing User: Ann Betterton
    Date Deposited: 31 Jan 2008
    Last Modified: 16 May 2018 14:27
    URI: http://shura.shu.ac.uk/id/eprint/941

    Actions (login required)

    View Item View Item

    Downloads

    Downloads per month over past year

    View more statistics