Ethylamine gas sensing properties of SnO2/rGO nanocomposite materials
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Abstract Ethylamine has been widely used in production and life, but it needs to be monitored in real-time because of its important harm to human health. In this study, an SnO 2 /rGO nanocomposite gas sensitive material was synthesized by hydrothermal method, and the gas-sensing properties of ethylamine were tested by a self-made gas sensitivity test platform. The results show that the SnO2/rGO nanocomposite materials have good gas-sensitive performance of ethylamine and low detection limit (up to 1 ppm). Finally, the mechanism of gas sensitivity is proposed.Keywords:
Ethylamine
Ethylamine
Chemisorption
Lone pair
Phosphide
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A method for fast determination of chloride in ethylamine substance by ion chromatography was developed.With the valve-switching technique, a large amount of ethylamine substance were eliminated from sample solution and in the meantime Cl- was accumulated on concentration column, which resulted in the removal of the matrix.The method has been successfully applied to determine the concentration of Cl- in ethylamine substance.
Ethylamine
Ion chromatography
Matrix (chemical analysis)
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Ethylamine
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Abstract Bis chelate complexes of Cu(II) and Zn(II) were synthesized with methylamine and ethylamine Schiff base derivatiies of 2-acetylpyrrole. Stable complexes were obtained, with the exception of the Cu(II) ethylamine adduct. which slowly hydrolyzed in air to yield a mixed ligand product containing one ethylamine Schiff base and one 2-acetylpyrrole per metal centre. The instability of the bis Cu(II) ethylamine Schiff base complex with respect to stable Cu(II) methylamine and Zn(1I) ethylamine complexes is discussed.
Ethylamine
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Ethylamine
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Abstract ( S )‐(−)‐α‐(1‐naphthyl)ethylamine product: ( S )‐(−)‐α‐(1‐ Naphthyl)ethylamine reactant: 58.44 g. (0.1849 mole) of (−)‐2,3:4,6‐di‐ O ‐isopropylidene‐2‐keto‐ L ‐gulonic acid hydrate [(−)‐DAG] reactant: 34.24 g. (0.2002 mole) of racemic α‐(1‐naphthyl)ethylamine intermediate: (−)‐amine (−)‐DAG
Ethylamine
Mole
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Abstract The ability of ethylamine to influence hydroxyapatite (HAp) crystal growth has been studied. HAp crystals were obtained from the mixture of HAp precursor slurry and various amount of ethylamine under hydrothermal condition. The products synthesized with 5 wt% or more ethylamine were plate-like crystals whose grown face was a-plane of HAp. Several analyses suggested that the role of ethylamine was the inhibition of crystal growth along a particular axis.
Ethylamine
Crystal (programming language)
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OBJECTIVE To establish an HPLC method to determine the content of the S- enantiomer in R- 1-( 1- naphthyl) ethylamine. METHODS The separation was performed on a Daicel Chiralcel OJ- H column( 250 mm × 4. 6 mm,5 μm) with n-hexane- ethanol- ethanolamine( 95∶5∶0. 1) as the mobile phase at a flow rate of 1. 0 mL·min- 1. The detection wavelength was 222 nm with the column temperature of 25 ℃. RESULTS R- 1-( 1- naphthyl) ethylamine and S- 1-( 1- naphthyl) ethylamine were well separated. The linear range of R- 1-( 1- naphthyl) ethylamine was 0. 02- 2. 0 μg·mL- 1( r =0. 9998). The LOD was 0. 1 ng and the LOQ was 0. 3 ng. CONCLUSION The method is quick,accurate and sensitive for the determination and control of the enantiomer of R- 1-( 1- naphthyl) ethylamine.
Ethylamine
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The 13C n.m.r. spectra of the unprotonated and fully protonated forms of ethylenediame (en), N-(2-aminoethyl)propane-1,3-diamine (2,3-tri), 2,2′-ethylene di-iminobis(ethylamine)(trien), 2,2′-trimethylenedi-iminobis (ethylamine)(2,3,2-tet), and 3,3′-trimethylenedi-iminobis(propylamine)(3,3,3-tet) are reported, together with those of the unprotonated forms of 2,2′-iminobis(ethylamine)(dien), 3,3′-iminobis(propylamine)(dpt), 2,2′-iminodiethylenedi-iminobis(ethylamine)(tetren), and 2,2′,2″-nitrilotris(ethylamine)(tren). A full assignment of the chemical shifts is proposed, based on a two-term empirical relationship employing 'amine shift parameters'π and π+.
Ethylamine
Propylamine
Propane
Chemical shift
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The configuration and preparation methods of 2-( 2-Thienyl) ethylamine were summarized. Domestic and overseas actuality of development and application of 2-( 2-Thienyl) ethylamine in all fields were introduced. The primary directions of 2-( 2-Thienyl) ethylamine in current research were putted forward.
Ethylamine
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