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  1. No Access

    Article

    Synthesis of butyl-octyl-diphenylamine as lubricant antioxidant additive by ionic liquids

    Ionic liquid used in Friedel-Crafts reaction catalytic of dialkyl diphenylamine is a green environmental method. In this paper, butyl-octyl-diphenylamine (BODPA) was synthesized by the series of 1-butyl-3-meth...

    W. Zhan, J. S. Tu, X. Z. Qian, J. Li, J. Liu in The International Journal of Advanced Manu… (2018)

  2. No Access

    Article

    Calculation of 2p 4(3 P)nl(l=s, d) Rydberg spectra of the fluorine isoelectronic sequence

    The basic structure parameters of 2p 4(3 P)ns and 2p 4(3 P)nd (J=1/2, 3/2 and 5/2) Rydberg spectra for the fluorine isoelectronic sequence from FI to NiXX, as functions of effective nuclear charge, are calculated...

    X. -Z. Qian, Z. -W. Wang in Zeitschrift für Physik D Atoms, Molecules and Clusters (1996)

  3. No Access

    Article

    An investigation of concentration variations of trace elements during storage of natural water samples

    Contamination and adsorption of trace elements during storage of natural water samples in polyethylene containers have been studied. Variations of concentrations of 29 elements in pH=1.5 natural water samples ...

    X. Z. Qian, X. X. Li, X. Y. Mao, C. F. Chai in Journal of Radioanalytical and Nuclear Che… (1987)