ChemInform Abstract: The Methyl-Transfer Reaction in Crystalline Methyl 2-(Methylthio) benzenesulfonate: A Thermally Induced Non-Topochemical Solid-State Reaction

ChemInform ◽  
2010 ◽  
Vol 22 (29) ◽  
pp. no-no
Author(s):  
P. VENUGOPALAN ◽  
K. VENKATESAN ◽  
J. KLAUSEN ◽  
E. NOVOTNY-BREGGER ◽  
C. LEUMANN ◽  
...  
1991 ◽  
Vol 74 (3) ◽  
pp. 662-669 ◽  
Author(s):  
P. Venugopalan ◽  
K. Venkatesan ◽  
J�rg Klausen ◽  
Elisabeth Novotny-Bregger ◽  
Christian Leumann ◽  
...  

Polyhedron ◽  
1996 ◽  
Vol 15 (3) ◽  
pp. 415-420 ◽  
Author(s):  
Parimal Kundu ◽  
Manas Kumar Saha ◽  
Sutapa Sen ◽  
Samiran Mitra ◽  
Sanjay Kumar ◽  
...  

Author(s):  
S.R. Summerfelt ◽  
C.B. Carter

The wustite-spinel interface can be viewed as a model interface because the wustite and spinel can share a common f.c.c. oxygen sublattice such that only the cations distribution changes on crossing the interface. In this study, the interface has been formed by a solid state reaction involving either external or internal oxidation. In systems with very small lattice misfit, very large particles (>lμm) with coherent interfaces have been observed. Previously, the wustite-spinel interface had been observed to facet on {111} planes for MgFe2C4 and along {100} planes for MgAl2C4 and MgCr2O4, the spinel then grows preferentially in the <001> direction. Reasons for these experimental observations have been discussed by Henriksen and Kingery by considering the strain energy. The point-defect chemistry of such solid state reactions has been examined by Schmalzried. Although MgO has been the principal matrix material examined, others such as NiO have also been studied.


Author(s):  
J. R. Heffelfinger ◽  
C. B. Carter

Transmission-electron microscopy (TEM), scanning-electron microscopy (SEM) and energy-dispersive x-ray spectroscopy (EDS) were used to investigate the solid-state reaction between a thin yttria film and a (0001) α-alumina substrate. Systems containing Y2O3 (yttria) and Al2O3 (alumina) are seen in many technologically relevant applications. For example, yttria is being explored as a coating material for alumina fibers for metal-ceramic composites. The coating serves as a diffusion barrier and protects the alumina fiber from reacting with the metal matrix. With sufficient time and temperature, yttria in contact with alumina will react to form one or a combination of phases shown by the phase diagram in Figure l. Of the reaction phases, yttrium aluminum garnet (YAG) is used as a material for lasers and other optical applications. In a different application, YAG is formed as a secondary phase in the sintering of AIN. Yttria is added to AIN as a sintering aid and acts as an oxygen getter by reacting with the alumina in AIN to form YAG.


1990 ◽  
Vol 51 (C4) ◽  
pp. C4-111-C4-117 ◽  
Author(s):  
L. J. GALLEGO ◽  
J. A. SOMOZA ◽  
H. M. FERNANDEZ ◽  
J. A. ALONSO

Sign in / Sign up

Export Citation Format

Share Document