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Abstract  

The complex from reaction of neodymium chloride six-hydrate with salicylic acid and 8-hydroxyquinoline, Nd(C7H5O3)2·(C9H6NO), was synthesized and characterized by IR, elemental analysis, molar conductance, and thermogravimatric analysis. The standard molar enthalpies of solution of [NdCl3·6H2O(s)], [2C7H6O3(s)], [C9H7NO(s)] and [Nd(C7H5O3)2·(C9H6NO)(s)] in a mixed solvent of anhydrous ethanol, dimethyl formamide (DMF) and perchloric acid were determined by calorimetry at 298.15 K. Based on Hess’ law, a new chemical cycle was designed, and the enthalpy change of the reaction

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $$NdCl_3 \cdot 6H_2 O(s) + 2C_7 H_6 O_3 (s) + C_9 H_7 NO(s) = Nd(C_7 H_5 O_3 )_2 \cdot (C_9 H_6 NO)(s) + 3HCl(g) + 6H_2 O(l)$$ \end{document}
((1)) was determined to be Δr H m Θ=117.89±0.37 kJ mol−1. From data in the literature, through Hess’ law, the standard molar enthalpy of formation of Nd(C7H5O3)2·(C9H7NO)(s) was estimated to be Δf H m Θ[Nd(C7H5O3)2·(C9H6NO)(s), 298.15 K]=−2031.80±8.6 kJ mol−1.

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Journal of Thermal Analysis and Calorimetry
Authors:
L. Xu
,
Y. De-Jun
,
L. Qiang-Guo
,
L. Ai-Tao
,
Y. Li-Juan
,
J. Qian-Hong
, and
L. Yi

Abstract  

The product from reaction of samarium chloride hexahydrate with salicylic acid and Thioproline, [Sm(C7H5O3)2·(C4H6NO2S)]·2H2O, was synthesized and characterized by IR, elemental analysis, molar conductance, and thermogravimetric analysis. The standard molar enthalpies of solution of [SmCl3·6H2O(s)], [2C7H6O3(s)], [C4H7NO2S(s)] and [Sm(C7H5O3)2·(C4H7NO2S)·H2O(s)] in a mixed solvent of absolute ethyl alcohol, dimethyl sulfoxide(DMSO) and 3 mol L−1 HCl were determined by calorimetry to be Δs H m Φ[SmCl3 δ6H2O (s), 298.15 K]= −46.68±0.15 kJ mol−1 Δs H m Φ[2C7H6O3 (s), 298.15 K]= 25.19±0.02 kJ mol−1, Δs H m Φ[C4H7NO2S (s), 298.15 K]=16.20±0.17 kJ mol−1 and Δs H m Φ[Sm(C7H5O3)2·(C4H6NO2S)]·2H2O (s), 298.15 K]= −81.24±0.67 kJ mol−1. The enthalpy change of the reaction

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $$SmCl_3 \cdot 6H_2 O(s) + 2C_7 H_6 O_3 (s) + C_4 H_7 NO_2 S(s) = Sm(C_7 H_5 O_3 )_2 \cdot (C_4 H_6 NO_2 S) \cdot 2H_2 O(s) + 3HCl(g) + 4H_2 O(1)$$ \end{document}
((1)) was determined to be Δs H m Φ =123.45±0.71 kJ mol−1. From date in the literature, through Hess’ law, the standard molar enthalpy of formation of Sm(C7H5O3)2(C4H6NO2S)δ2H2O(s) was estimated to be Δs H m Φ[Sm(C7H5O3)2·(C4H6NO2S)]·2H2O(s), 298.15 K]= −2912.03±3.10 kJ mol−1.

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, there is an urgent need for relevant thermodynamic data of sodium isophthalic acid derivatives. In this article, we synthesized sodium 5-methylisophthalic acid monohydrate (C 9 H 6 O 4 Na 2 ·H 2 O, s) and sodium isophthalic acid hemihydrate (C 8

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Journal of Flow Chemistry
Authors:
Mais J. Jebrail
,
Naila Assem
,
Jared M. Mudrik
,
Michael D.M. Dryden
,
Kaixiang Lin
,
Andrei K. Yudin
, and
Aaron R. Wheeler

Abstract

A microfluidic technique for combinatorial chemical synthesis of peptidomimetics has been developed. The new method is fast, automated and includes an integrated magnetic separation of inorganic catalysts from reaction products. This proof-of-concept study should lead to methods for generating libraries of compounds suitable for screening for bioactivity.

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formation of a yellow solid anticipated as KC 9 H 6 ON was observed. It was filtered and the filtrate was distilled off to remove excess of solvent. The concentrate was then dried under vacuum by treating it with petroleum ether whereupon black-, green- and

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complexes in the lanthanide series. Experimental Preparation of Ln 2 (C 12 H 6 O 4 ) 3 · n H 2 O Due to insolubility of 2,3-naphthalenedicarboxylic acid in water, we prepared its ammonium salt (pH = 5.8) to

Open access
Journal of Thermal Analysis and Calorimetry
Authors:
Li-Fang Song
,
Cheng-Li Jiao
,
Chun-Hong Jiang
,
Jian Zhang
,
Li-Xian Sun
,
Fen Xu
,
Qing-Zhu Jiao
,
Yong-Heng Xing
,
F. L. Huang
,
Yong Du
,
Zhong Cao
,
Fen Li
, and
Jijun Zhao

900489g . 12. Dinca , M , Long , JR 2005 Strong H-2 binding and selective gas adsorption within the microporous coordination solid Mg-3(O2C–C10H6–CO2)(3) . J Am Chem Soc 127 : 9376

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8-hydroxyquinoline (oxine) and uranyl acetate react in the solid state in 1∶3 stoichiometry to give UO2(C9H6NO)2·C9H6NOH. This reaction is diffusion controlled with an activation energy of 44.4 kJ mol−1. The reaction occurs by the surface migration of 8-hydroxyquinoline, which penetrates the product lattice to react with uranyl acetate. The isothermal decomposition of the solution phase product UO2Q2·HQ (Q=C9H6NO) obeys the Prout-Tompkins equation with an energy of activation of 53.3 kJ mol−1.

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-source precursor[Pb(H 2 O) 3 ] 2 [Ti 2 (O 2 ) 2 O(NC 6 H 6 O 6 ) 2 ]·4H 2 O ( 1 ) The flowchart for synthesis of compound 1 and PbTiO 3 material is summarized in Scheme 1 . To the suspension of H 3 nta (9.57 g, 50 mmol) in 50 mL of deionized water was

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chromatograph with a thermal conductivity detector (TCD) and a flame ionization detector (FID). A TDX01 column was used for the separation of O 2 , CO, CH 4 and CO 2 , and a [DNBM+ODPN] column was used for the analysis of CH 4 , C 2 H 4 , C 2 H 6 , C 3 H 6 and

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