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Pillared layered manganese oxide

Synthesis and redox properties

Journal of Thermal Analysis and Calorimetry
Authors:
She-Tin Wong
and
Soofin Cheng

Abstract  

Keggin ion-pillared buserite was prepared by ion-exchanging the hexylammonium ion-expanded buserite with Keggin ions, [Al13O4(OH)24(H2O)12]7+. The starting material was synthetic Na-buserite, which is a layered manganese oxide of composition Na4Mn14O26 xH2O. The thermal and redox properties of this oxide and its pillared derivative were compared in O2, N2 and H2 environments using TG, DSC and XRD. The results indicated an improvement in thermal stability of pillared compound relative to Na-buserite in all gaseous environments. By using these compounds in catalysing the oxidation of ethane, it was found that they were very active for complete oxidation.

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. Treating these kinds of waters has become a technological, ecological, and economical problem. One option for treating of the high organic content of PWW is Wet (Air) Oxidation (W[A]O), by which the pollutants are converted into easily biodegradable

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Introduction The production of syngas, consisting of hydrogen and carbon monoxide, through the partial oxidation of methane has been intensively studied in recent years [ 1 – 3 ]. This is mainly due to its potential to overcome

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Procedures for the Online and Offline Measurement of Exhaled Lower Respiratory Nitric Oxide and Nasal Nitric Oxide, 2005. Am. J. Respir. Crit. Care Med., 2005, 171, 912–930. Silkoff, P. E., Carlson, M

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Low temperature reactivity in agglomerates containing iron oxide

Studies in the Ca(OH)2–C–Fe2O3 system

Journal of Thermal Analysis and Calorimetry
Authors:
Ryan Robinson
,
Fabrice Patisson
, and
Bo Björkman

these dusts have shown to result in several industrial benefits, mostly in the decrease of natural resource dependence, reduction of landfill, and indirectly as energy savings [ 2 ]. These by-product dusts contain considerable amounts of iron oxides

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Journal of Radioanalytical and Nuclear Chemistry
Authors:
G. Timofeev
,
V. Gabeskiria
,
G. Simakin
,
V. Mishenev
,
A. Bevz
, and
A. Rykov

Abstract  

As a rule the analysis of nuclear oxide fuel includes the determination of uranium, plutonium, their isotopic composition, cation impurities, carbon, nitrogen, chlorine, fluorine, oxygen coefficient. In this paper we discuss different methods for the a analysis of unirradiated uranium and plutonium oxide fuelds used in the laboratories of the Analytical Chemistry Department: coulometry, emission analysis, chromatography, X-ray analysis. Much consideration is being given to the analysis of uranium and plutonium oxide samples and uranium-plutonium mixed fuels irradiated in the BOR-60 using mass-spectrometric (isotope dilution method) and radiometric techniques. The results of uranium and plutonium determination by these methods are compared. The main analytical characteristics of the methods are given.

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Reaction Kinetics, Mechanisms and Catalysis
Authors:
Viorel Chihaia
,
Karl Sohlberg
,
Rodica Zăvoianu
,
Anca Cruceanu
,
Octavian Dumitru Pavel
,
Emilian Angelescu
,
Ana Paula Soares Dias
, and
Ruxandra Bîrjega

inoffensive alkyl disulfides. In the petroleum industry, such processes are usually called “sweetening”. The most widely used sweetening process is Merox developed by UOP [ 1 – 3 ], which is based on the aerobic oxidation of alkane thiols to dialkyl disulfides

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Acta Biologica Hungarica
Authors:
B. Mornagui
,
A. Grissa
,
M. Duvareille
,
C. Gharib
,
A. Kamoun
,
S. El-Fazaa
, and
N. Gharbi

Akesson, B., Henningsson, R., Salehi, A., Lundquist, I. (1999) Islet constitutive nitric oxide synthase and glucose regulation of insulin release in mice. J. Endocrinol. 163, 39

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331 178 180 Bradley, D. J., Kjellbom, P., Lamb, C. J. (1992) Elicitor- and wound-induced oxidative cross-linking of a proline-rich plant cell wall

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Journal of Thermal Analysis and Calorimetry
Authors:
R. A. Candeia
,
F. S. M. Sinfrônio
,
T. C. Bicudo
,
N. Queiroz
,
A. K. D. Barros Filho
,
L. E. B. Soledade
,
I. M. G. Santos
,
A. L. Souza
, and
A. G. Souza

be affected by interaction with contaminants, light, and factors causing sediment formation, changes in color and other changes that reduce the clearness of the fuel [ 13 ]. Oxidative degradation during storage can hamper the fuel quality, with

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