7647-15-6Relevant articles and documents
Gel Systems for the Belousov-Zhabotinskii Reaction
Yamaguchi, T.,Kuhnert, L.,Nagy-Ungvarai, Zs.,Mueller, S. C.,Hess, B.
, p. 5831 - 5837 (1991)
Gel systems and their advantages over an aqueous system for spatial patterns in the Belousov-Zhabotinskii reaction are investigated.Five new gel preparations are introduced in which several ferroin-type catalysts (highly hydrophobic and anionic) are immob
Evaluation of kinetic parameters for the thermal decomposition of γ-irradiated sodium bromate by dynamic thermogravimetry
Nair,Malayil, Koshy Kunju,Jacob, P.Daisamma
, p. 61 - 68 (1989)
The thermal decomposition of γ-irradiated NaBrO3 was studied by dynamic thermogravimetry. The reaction order, activation energy, frequency factor and entropy of activation were computed using the Coats-Redfern, Freeman-Carroll and Horowitz-Metz
Biochar and kinetics studies on the reduction of sodium bromate by a cobaloxime in an aqueous media: How we can remove a toxic substance from our environment
Celestine, Michael J.,Holder, Alvin A.,Kumar, Sandeep,Nunez, Brianne S.,Tano, Criszcele M.,Tonsel-White, Elizabeth A.
, (2020)
The reduction of sodium bromate (NaBrO3) by [Co(dmgBF2)2(OH2)2] (where dmgBF2 = difluoroboryldimethylglyoximato) was investigated in hydrochloric and nitric acids. Analytical studies were carried out via gravimetric analysis and UV–visible spectrophotometry. Gravimetric analysis proved that sodium bromate was reduced to from quantitative amounts of sodium bromide in the presence of hydrochloric acid. Biochar was used to sequester the complex from the reaction mixture and to neutralize the acidic media. The UV–visible data confirmed the sequestration of the complex from the reaction mixture after exposure to the biochar. The collected pH data proved a direct relationship between pH and the amount of biochar used in the form of a titration curve. Kinetic studies were also carried out to ascertain the mechanism of the oxidation of [Co(dmgBF2)2(OH2)2] by NaBrO3. The oxidation of [Co(dmgBF2)2(OH2)2] by NaBrO3 was carried out by stopped-flow spectrophotometry at 450 nm by varying temperature and over the range of 1.00 mM ≤ [HCl] ≤ 11.00 mM, at a constant ionic strength of 0.60 M (NaCl). From the data, a mechanism for the reaction was proposed. From the mechanism the following rate expression was derived, [Formula presented], where k1 was calculated to be 4.2 × 104 M?1 s?1 at 25 °C, and the activation parameters (ΔH? and ΔS?) were calculated as 57 ± 1 kJ mol?1 and 34 ± 4 J mol?1 K?1, respectively.
Nitrogen-rich carbon nitride materials shock-synthesized from carbon tetrahalide and sodium dicyanoamide
Shibata, Kazusato,Sekine, Toshimori
, p. 501 - 505 (2006)
Shock reactions between CX4 (X=Br or I) and NaN(CN)2 were investigated to prepare carbon nitrides. The post shock samples were characterized by the powder X-ray diffraction (XRD) technique. The XRD spectrum of the product showed a peak in the range of 0.324-0.336?nm in d-value corresponding to the (002) basal plane diffraction in graphitic structure. Elemental analysis (C, H, N, O) of the product showed that the atomic ratio of nitrogen to carbon (N/C) ranged from 0.38 to 1.3. Analysis of data revealed that the d-value increased and the nitrogen content decreased with the increase of the impact velocity.
Ion Exchange of Layered Alkali Titanates (Na2Ti3O7, K2Ti4O9, and Cs2Ti5O11) with Alkali Halides by the Solid-State Reactions at Room Temperature
Ogawa, Makoto,Saothayanun, Taya Ko,Sirinakorn, Thipwipa Tip
, p. 4024 - 4029 (2020/04/08)
Ion exchange of layered alkali titanates (Na2Ti3O7, K2Ti4O9, and Cs2Ti5O11) with several alkali metal halides surprisingly proceeded in the solid-state at room temperature. The reaction was governed by thermodynamic parameters and was completed within a shorter time when the titanates with a smaller particle size were employed. On the other hand, the required time for the ion exchange was shorter in the cases of Cs2Ti5O11 than those of K2Ti4O9 irrespective of the particle size of the titanates, suggesting faster diffusion of the interlayer cation in the titanate with lower layer charge density.
Synthesis, characterization, and catalytic behavior of methoxy- and dimethoxy-substituted pyridinium-type ionic liquids
Manikandan, Chitrarasu,Ganesan, Kilivelu
, p. 3362 - 3367 (2014/12/11)
Synthesis of methoxy-substituted pyridinium-type ionic liquids from a nontoxic and easy method is described. Catalytic behaviors of synthesized ionic liquids were investigated with various concentrations for the Mannich reaction. We have observed that methoxy- and dimethoxy-substituted pyridinium bromides showed better catalytic behavior than other ionic liquids.
Nitryl cyanide, NCNO2
Rahm, Martin,Belanger-Chabot, Guillaume,Haiges, Ralf,Christe, Karl O.
supporting information, p. 6893 - 6897 (2014/07/08)
The elusive nitryl cyanide, NCNO2, has been synthesized and characterized. It was prepared in good yield, isolated by fractional condensation, characterized by NMR and vibrational spectroscopy, and studied by theoretical calculations. Nitryl cyanide holds promise as a high energy density material (HEDM) and might also prove useful as a HEDM building block. The simplicity and inherent stability of nitryl cyanide, together with the known multitude of nitriles in interstellar space, suggest that the compound might also be a potential candidate for observations in atmospheric and interstellar chemistry. Small yet feisty: The elusive small molecule nitryl cyanide, NCNO2, has been synthesized and characterized. It has a high kinetic stability, is extremely energetic, has a perfect oxygen balance with respect to combustion to CO2 and N2, and has potential as a building block for other energetic materials. Nitryl cyanide might also be of interest for atmospheric and interstellar chemistry. Isp=specific impulse.
PROCESS FOR THE PREPARATION OF CONCENTRATED SOLUTIONS OF STABILIZED HYPOBROMITES
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Page/Page column 2, (2009/06/27)
The invention is a process for the preparation of stabilized aqueous solutions of alkali hypobromites at low temperatures, which comprises reacting a concentrated alkali hydroxide aqueous solution with bromine, and adding to the reaction product, which is a non-stabilized solution, an aqueous solution of a sulfamic compound, such as sodium sulfamate, thus forming a stabilized alkali hypobromite solution.
METHODS FOR PRODUCING PERFLUOROALKANEDI(SULFONYL CHLORIDE)
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Page/Page column 9, (2009/05/29)
Novel methods for preparing perfluoroalkanedi(sulfonyl chloride) are disclosed as are uses for these compounds. In one aspect, a method comprising reacting dibromoperfluoroalkane with Na2S2O4 followed by treating with chlorine, an organic compound, and then chlorine to form perfluoroalkanedi(sulfonyl chloride) is provided. Novel perfluoroalkanedi(sulfonyl bromide) compounds are also disclosed.
Alkyl-terminated crystalline Ge nanoparticles prepared from NaGe: Synthesis, functionalization and optical properties
Ma, Xuchu,Wu, Fengyi,Kauzlarich, Susan M.
, p. 1628 - 1633 (2009/02/02)
High purity NaGe was directly prepared by a low-temperature reaction of NaH and Ge. The product was characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX) spectroscopy. This material is a useful starting reagent for the preparation of Ge nanoparticles. Hydrogen-terminated germanium (Ge) nanoparticles were prepared by reaction of NaGe with NH4Br. These Ge nanoparticles could be prepared as amorphous or crystalline nanoparticles in quantitative yields and with a narrow size distribution. The nanoparticles were functionalized via thermally initiated hydrogermylation with 1-eicosyne, CH3(CH2)17C≡CH to produce alkyl-terminated Ge nanoparticles. The modified Ge nanoparticles were characterized by powder XRD, transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) and Raman spectroscopy, and photoluminescence (PL) spectroscopy. The alkyl-functionalized Ge nanoparticles can be expected to have promising applications in many technological and biological areas.
