A Thermally Induced Low-temperature Intramolecular Redox Reaction of bis(pyridine)silver(I) Permanganate and its hemipyridine Solvate

2006 ◽  
Vol 31 (1) ◽  
pp. 30-34 ◽  
Author(s):  
László Kótai ◽  
Judit Fodor ◽  
Emma Jakab ◽  
István Sajó ◽  
Piroska Szabó ◽  
...  
Keyword(s):  
Low Temperature ◽  
Redox Reaction ◽  
Thermally Induced

Transformation behavior of yttria stabilized tetragonal zirconia polycrystal–TiB2 composites

2001 ◽  
Vol 16 (7) ◽  
pp. 2158-2169 ◽  
Author(s):  
B. Basu ◽  
J. Vleugels ◽  
O. Van Der Biest
Keyword(s):  
Thermal Expansion ◽  
Phase Transformation ◽  
Low Temperature ◽  
Tetragonal Zirconia ◽  
Mechanical Analysis ◽  
Transformation Behavior ◽  
Thermal Expansion Data ◽  
Thermally Induced ◽  
First Time ◽  
Tetragonal Zirconia Polycrystal

The objective of the present article is to study the influence of TiB2 addition on the transformation behavior of yttria stabilized tetragonal zirconia polycrystals (Y-TZP). A range of TZP(Y)–TiB2 composites with different zirconia starting powder grades and TiB2 phase contents (up to 50 vol%) were processed by the hot-pressing route. Thermal expansion data, as obtained by thermo-mechanical analysis were used to assess the ZrO2 phase transformation in the composites. The thermal expansion hysteresis of the transformable ceramics provides information concerning the transformation behavior in the temperature range of the martensitic transformation and the low-temperature degradation. Furthermore, the transformation behavior and susceptibility to low-temperature degradation during thermal cycling were characterized in terms of the overall amount and distribution of the yttria stabilizer, zirconia grain size, possible dissolution of TiB2 phase, and the amount of residual stress generated in the Y-TZP matrix due to the addition of titanium diboride particles. For the first time, it is demonstrated in the present work that the thermally induced phase transformation of tetragonal zirconia in the Y-TZP composites can be controlled by the intentional addition of the monoclinic zirconia particles into the 3Y-TZP matrix.

Thermally Induced Symmetry and Disorder: The Low-Temperature Crystal Structure of Diaquadichlorodimethyltin · 15-crown-5

1996 ◽  
Vol 1 (3) ◽  
pp. 359-363 ◽  
Author(s):  
Glenn P. A. Yap ◽  
Mostafa M. Amini ◽  
Seik W. Ng ◽  
Anne E. Counterman ◽  
Arnold L. Rheingold
Keyword(s):  
Crystal Structure ◽  
Low Temperature ◽  
Thermally Induced ◽  
Low Temperature Crystal Structure

scholarly journals Thermally induced oxidative trimerization of benzimidazole by copper(II) chloride in the solid state

2003 ◽  
Vol 1 (4) ◽  
pp. 427-440
Author(s):  
Rahul Bhattacharya ◽  
Sibdas Ray ◽  
Jayanta Ray ◽  
Ashutosh Ghosh
Keyword(s):  
Elevated Temperature ◽  
Solid State ◽  
Mass Spectroscopy ◽  
Redox Reaction ◽  
Cuprous Chloride ◽  
Lower Yield ◽  
Excitation Spectra ◽  
Thermally Induced ◽  
Cyclic Trimer

AbstractBenzimidazolium trichlorocuprate(II) undergoes a redox reaction in the solid state at elevated temperature (∼240°C) to produce the cyclic trimer of benzimidazole and cuprous chloride. The trimer has been characterized by IR, NMR, and Mass spectroscopy. It has also been synthesized in lower yield by heating the mixtures of CuCl2 and benzimidazole in different ratios or heating other compounds of CuCl2 and benzimidazole. The absorption, emission, and excitation spectra of the trimer in two different solvents (TFA and DMSO) and a comparison of these results with those of benzimidazole are presented here.

Thermally induced strain relaxation in SiGe/Si heterostructures with low-temperature buffer layers

2005 ◽  
Vol 2 (6) ◽  
pp. 1938-1942 ◽  
Author(s):  
V. I. Vdovin ◽  
T. G. Yugova ◽  
M. M. Rzaev ◽  
F. Schäffler ◽  
M.G. Mil'vidskii
Keyword(s):  
Low Temperature ◽  
Strain Relaxation ◽  
Buffer Layers ◽  
Thermally Induced

scholarly journals Influence of cerium doping on Cu–Ni/activated carbon low-temperature CO-SCR denitration catalysts

RSC Advances ◽  
2021 ◽  
Vol 11 (30) ◽  
pp. 18458-18467
Author(s):  
Defu Wang ◽  
Bangfu Huang ◽  
Zhe Shi ◽  
Hongming Long ◽  
Lu Li ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Low Temperature ◽  
Redox Reaction ◽  
Copper Nickel ◽  
Cerium Doping

In the process of denitrification, the reaction between NO and CO (NO + CO → N2 + CO2) occurs. There will be a redox reaction between copper, nickel and cerium (Cu2+ + Ce3+ → Cu+ + Ce4+, Ni3+ + Ce3+ → Ni2+ + Ce4+).

2,5-Bridged 1-Carba-arachno-pentaborane(10) Derivatives – Intermediates on the Way to Pentaalkyl-1,5-dicarba-closo-pentaboranes(5)

2015 ◽  
Vol 70 (10) ◽  
pp. 741-745 ◽  
Author(s):  
Bernd Wrackmeyer ◽  
Hans-Joerg Schanz
Keyword(s):  
Nmr Spectroscopy ◽  
Low Temperature ◽  
Thermal Degradation ◽  
Dft Calculations ◽  
Large Excess ◽  
Thermally Induced ◽  
Independent Synthesis ◽  
Induced Decomposition ◽  
C Nmr

AbstractStimulated by a report from (R. Köster, G. Benedikt, M. A. Grassberger, Liebigs Ann. Chem. 1968, 719, 187.) on a carbaborane, for which the structure of 2,3,4,5,-tetraethlyl-1-methyl-2,5-μ-(ethyl-1′,1′-diyl)-1-carba-arachno-pentaborane(10) 1 was proposed, an independent synthesis was developed. Diethyl(ethynyl)borane was generated in situ in the presence of a large excess of “Et2B–H” (hydride bath) by ethynyl/H exchange, using ethynyl(trioctyl)tin to react in a mixture with diethyl(vinyl)borane at low temperature. Hydroboration and Et2B–H-catalysed condensation afforded 1, as shown by 11B, 13C NMR spectroscopy and DFT calculations. Thermal degradation of 1 gave 2,3,4-triethyl-1,5-dimethyl-1,5-dicarba-closo-pentaborane(5), whereas the pentaethyl-1,5-dicarba-closo-pentaborane(5) resulted from thermally induced decomposition of other suitably substituted arachno carbaboranes.

Sign in / Sign up

Export Citation Format

Share Document