The Experts below are selected from a list of 177 Experts worldwide ranked by ideXlab platform
R. Sh. Erkasov - One of the best experts on this subject based on the ideXlab platform.
-
Interaction in the nickel perchlorate–acetamide–Perchloric Acid–water system at 25°С
Russian Journal of Inorganic Chemistry, 2017Co-Authors: R. Sh. Erkasov, S. R. Massakbayeva, L. A. Kusepova, S. M. BolysbekovaAbstract:Heterogeneous equilibria in the nickel perchlorate–acetamide–Perchloric Acid–water quaternary system at 25°С were studied by studying solubility. The crystallization regions were determined for the initial solid components, eutonic compositions of the ternary systems constituting the quaternary system, binary compounds of acetamide with nickel perchlorate and Perchloric Acid, and also two new coordination compounds containing simultaneously nickel perchlorate, acetamide, and Perchloric Acid: Ni(ClO4)2 · 4CH3CONH2 · HClO4 and Ni(ClO4)2 · 2CH3CONH2 · HClO4.
-
Interaction in the zinc perchlorate–urea–Perchloric Acid–water system at 25°С
Russian Journal of Inorganic Chemistry, 2017Co-Authors: R. Sh. Erkasov, R. M. Nesmeyanova, S. R. Massakbayeva, L. A. KusepovaAbstract:Heterogeneous equilibria in the zinc perchlorate–urea–Perchloric Acid–water quaternary system at 25°С were studied by investigating solubility. The crystallization regions were found for the initial solid components, eutonic compositions of the ternary systems constituting the quaternary system, binary compounds of urea with zinc perchlorate and Perchloric Acid, and also two new coordination compounds containing simultaneously zinc perchlorate, urea, and Perchloric Acid: ZnClO4 · 4CO(NH2)2 · HClO4 and ZnClO4 · 2CO(NH2)2 · HClO4.
-
Solubility in the manganese perchlorate–urea–Perchloric Acid–water system at 25°С
Russian Journal of Inorganic Chemistry, 2016Co-Authors: R. Sh. Erkasov, R. M. Nesmeyanova, R. S. Orazbaeva, S. R. MasakbaevaAbstract:Heterogeneous equilibria in the manganese perchlorate–urea–Perchloric Acid–water quaternary system at 25°С were studied by investigating solubility. The crystallization regions were determined for the initial solid components, eutonic compositions of ternary systems constituting the quaternary system, binary compounds of urea with manganese perchlorate and Perchloric Acid, and also two new coordination compounds containing simultaneously manganese perchlorate, urea, and Perchloric Acid: Mn(ClO4)2 · 4CO(NH2)2 · HClO4 and Mn(ClO4)2 · 2CO(NH2)2 · HClO4.
William L Bigg - One of the best experts on this subject based on the ideXlab platform.
-
starch determination by Perchloric Acid vs enzymes evaluating the accuracy and precision of six colorimetric methods
Journal of Agricultural and Food Chemistry, 1991Co-Authors: Robin Rose, Cathy L Rose, Steven K Omi, Keith R Forry, Daniel M Durall, William L BiggAbstract:Different methods of polymer extraction can markedly affect the accuracy of starch determination in plant tissues. This study compared starch values in pine root tissue extracted with either Perchloric Acid or starch-digesting enzymes. Three variations of the two extraction methods were tested. The accuracy of starch determination was assessed for five methods by comparing results to a standard method that employed Perchloric Acid and KI precipitation. Methods that employed commercial enzymes without additional purification yielded starch values slightly higher than the standard method. Commercial enzymes subjected to additional purification yielded starch values slightly lower than the standard method. Perchloric Acid methods without KI precipitation yielded starch values 20-40 5% higher than the standard method. Also, enzyme methods had the highest precision for extraction and colorimetric steps and were more convenient than Perchloric Acid methods if additional enzyme purification was not performed. Detailed protocols for the laboratory procedures are provided.
L. A. Kusepova - One of the best experts on this subject based on the ideXlab platform.
-
Interaction in the nickel perchlorate–acetamide–Perchloric Acid–water system at 25°С
Russian Journal of Inorganic Chemistry, 2017Co-Authors: R. Sh. Erkasov, S. R. Massakbayeva, L. A. Kusepova, S. M. BolysbekovaAbstract:Heterogeneous equilibria in the nickel perchlorate–acetamide–Perchloric Acid–water quaternary system at 25°С were studied by studying solubility. The crystallization regions were determined for the initial solid components, eutonic compositions of the ternary systems constituting the quaternary system, binary compounds of acetamide with nickel perchlorate and Perchloric Acid, and also two new coordination compounds containing simultaneously nickel perchlorate, acetamide, and Perchloric Acid: Ni(ClO4)2 · 4CH3CONH2 · HClO4 and Ni(ClO4)2 · 2CH3CONH2 · HClO4.
-
Interaction in the zinc perchlorate–urea–Perchloric Acid–water system at 25°С
Russian Journal of Inorganic Chemistry, 2017Co-Authors: R. Sh. Erkasov, R. M. Nesmeyanova, S. R. Massakbayeva, L. A. KusepovaAbstract:Heterogeneous equilibria in the zinc perchlorate–urea–Perchloric Acid–water quaternary system at 25°С were studied by investigating solubility. The crystallization regions were found for the initial solid components, eutonic compositions of the ternary systems constituting the quaternary system, binary compounds of urea with zinc perchlorate and Perchloric Acid, and also two new coordination compounds containing simultaneously zinc perchlorate, urea, and Perchloric Acid: ZnClO4 · 4CO(NH2)2 · HClO4 and ZnClO4 · 2CO(NH2)2 · HClO4.
A.r. Hall - One of the best experts on this subject based on the ideXlab platform.
-
Perchloric Acid flames: IX. Two-flame structure with hydrocarbons
Symposium (International) on Combustion, 2007Co-Authors: A.r. Hall, G.s. PearsonAbstract:Premixed flames of Perchloric Acid with methane that contain an appreciable amount of diluent have been found to exhibit a two-flame structure for a slightly fuel-rich range of fuel/oxidizer ratios. A similar, more diffuse structure is apparent in Perchloric Acid flames containing less diluent, or with other hydrocarbons. Burning velocities, spectra, temperatures, and burned gas compositions have been measured for flames with methane as fuel. The product analyses indicate that the second flame results from the combustion of carbon monoxide and of a smaller amount of hydrocarbon, which are not oxidized in the first flame. It is concluded that the two flame fronts result from a dual oxidizing action of the Perchloric Acid in producing both a chloride-oxygen species, which reacts rapidly with the initial fuel molecule, and oxygen, which completes the combustion. The relevance of this finding to other properties of Perchloric Acid flames is discussed.
-
Perchloric Acid flames. I. Premixed flames with methane and other fuels
Symposium (International) on Combustion, 2007Co-Authors: G.a.mcd. Cummings, A.r. HallAbstract:Premixed flames have been stabilized using the vapor of 72% Perchloric Acid as oxidizer, and methane, ethane, methyl alcohol, and carbon monoxide as fuels. The spectra of fuel/Perchloric-Acid flames show the same band systems as the corresponding oxygen flames, but, in addition, the methane flames show strong “cool-flame” bands and the ethane flames “hydrocarbon-flame” bands. The addition of oxygen or air to a low pressure, fuel-rich, methane/Acid flame causes the formation of a second luminous zone downstream of the one associated with the Acid; the first zone gives the Acid-flame spectrum, the second the oxygen-flame spectrum. Temperatures of methane/Acid flames measured by OH line reversal are in good agreement with computed values. Measurements show that fuel/Acid flames have much higher burning velocities than the corresponding fuel/oxygen flames at the same flame temperature, achieve their maximum burning velocity well on the fuel-rich side of stoichiometric, and are less inhibited by halogenated hydrocarbons than oxygen flames with the same flame temperature. It is concluded that Perchloric Acid or its decomposition products are more reactive oxidizers than molecular oxygen, and the ammonia/Perchloric-Acid flame would be expected to be much faster than the ammonia/oxygen or ammonia/oxygen/chlorine flames at the same flame temperature.
R. M. Nesmeyanova - One of the best experts on this subject based on the ideXlab platform.
-
Interaction in the zinc perchlorate–urea–Perchloric Acid–water system at 25°С
Russian Journal of Inorganic Chemistry, 2017Co-Authors: R. Sh. Erkasov, R. M. Nesmeyanova, S. R. Massakbayeva, L. A. KusepovaAbstract:Heterogeneous equilibria in the zinc perchlorate–urea–Perchloric Acid–water quaternary system at 25°С were studied by investigating solubility. The crystallization regions were found for the initial solid components, eutonic compositions of the ternary systems constituting the quaternary system, binary compounds of urea with zinc perchlorate and Perchloric Acid, and also two new coordination compounds containing simultaneously zinc perchlorate, urea, and Perchloric Acid: ZnClO4 · 4CO(NH2)2 · HClO4 and ZnClO4 · 2CO(NH2)2 · HClO4.
-
Solubility in the manganese perchlorate–urea–Perchloric Acid–water system at 25°С
Russian Journal of Inorganic Chemistry, 2016Co-Authors: R. Sh. Erkasov, R. M. Nesmeyanova, R. S. Orazbaeva, S. R. MasakbaevaAbstract:Heterogeneous equilibria in the manganese perchlorate–urea–Perchloric Acid–water quaternary system at 25°С were studied by investigating solubility. The crystallization regions were determined for the initial solid components, eutonic compositions of ternary systems constituting the quaternary system, binary compounds of urea with manganese perchlorate and Perchloric Acid, and also two new coordination compounds containing simultaneously manganese perchlorate, urea, and Perchloric Acid: Mn(ClO4)2 · 4CO(NH2)2 · HClO4 and Mn(ClO4)2 · 2CO(NH2)2 · HClO4.
