TG, DTA, FTIR and Raman spectral analysis of Zn_a/Mg_bammonium sulfate mixed crystals

Abstract

/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1023/B: JTAN.0000042160.82063.c4 Journal of Thermal Analysis and Calorimetry, 78, 1, pp. 125-133, 2004-09-01 TG, DTA, FTIR and raman spectral analysis of Zna/Mgb ammonium sulfate mixed crystals Madhurambal, G.; Mojumdar, S. C.; Hariharan, S.; Ramasamy, P.

Removal of ammonium ion from aqueous solutions by using unmodified and H2O2-modified zeolitic waste

“…Changes occurred during the sorption process and were related to the additional absorption frequencies of ammonium. The results confirmed that the main changes were observed at approximately 1389-1384 cm −1 , attributing to the absorption band of NH 4 + present in the zeolite structure 44 . The normal modes of vibration of a free NH 4…”

Growth and Characterization of Titanium Doped Lithium Niobate Single Crystal Using Czochralski Technique

“…Solid State Science and Technology XXIX Figure 1 shows the XRD pattern of Ti:LiNbO 3 crystals obtained at room temperature and the XRD result summarized in Table 2 From Figure 2, well-defined Bragg peaks can be observed at specific 2 theta angles which indicate that the samples are crystalline. The diffraction peaks obtained, together with identified d spacing and hkl values are compared with international centre for diffraction data (ICDD) data and it was confirmed powder XRD results of Ti:LiNbO 3 testify the crystalline nature and purity of the crystal [7][8]. Figure 3 shows the DTA curve of the samples.…”

Crystal growth, structure, crystalline perfection and characterization of zinc magnesium ammonium sulfate hexahydrate mixed crystals ZnxMg(1−x)(NH4)2(SO4)2·6H2O

“…The single crystal EPR studies on Fe(III) [9], Cr(III) [10], VO(II) [11], Cu(II) [12], and Mn(II) [13] doped Tutton's salts are studied. The FT-IR and TG-DTA behaviors of zinc ammonium sulfate and magnesium ammonium sulfate mixed crystals have been investigated [14]. Although extensive studies have been carried out on Tutton's salt crystals, the crystal structure and crystalline perfection of Zn x Mg (1À x) (NH 4 O in various molar proportions (0.10-0.90) were made in triply distilled water and well stirred for 2 h to ensure homogeneity.…”