Science Journal of Chemistry

Volume 6, Issue 4, August 2018

  • On Branched Chain Processes, the Laws of Development of Which Are Expressed by Numerical Sequences Like Fibonacci Numbers, a New Look at Their Nature

    Yurii Petrenko

    Issue: Volume 6, Issue 4, August 2018
    Pages: 30-42
    Received: 23 July 2018
    Accepted: 15 August 2018
    Published: 11 October 2018
    Abstract: Branched chain chemical reactions represent a special class of chemical transformation reactions of matter, for the discovery and experimental-theoretical development of which Semenov N. N. and Hinshelwood C. N. were awarded the Nobel Prize in 1956. In nature, such processes are widespread. Objective. To investigate the nature of various numerical ... Show More
  • Synthesis of n-Butyl Lactate by Transition-Metal-Substituted Phosphotungstic Acid Salt

    Ke Wu, Li Xu, Ling Xu, Lijuan Xie, Zongrui Liu

    Issue: Volume 6, Issue 4, August 2018
    Pages: 43-49
    Received: 16 September 2018
    Published: 18 October 2018
    Abstract: Fatty acid ester perfume occupied an important position in food industry. The characteristics of them were variety, easy synthesis and low price. They were widely used in daily flavor, edible flavor and industrial flavor. POMs were a kind of stong acid bifunctional mild environment-friendly catalysts, their drawback was excellent solubility and cou... Show More
  • Syntheses, Geometrical and Electronic Structure of Alkyladamantanes and Their Thermodynamic Characteristic According to the Density Functional Theory

    Amanzhan Saginayev, Marina Kursina, Altynai Kalauova

    Issue: Volume 6, Issue 4, August 2018
    Pages: 50-55
    Received: 3 September 2018
    Accepted: 26 September 2018
    Published: 22 October 2018
    Abstract: Propyladamantanes synthesized by of alkylation adamantane with isopropyl alcohol temperature range from 5 to 40°C in the presence of 96% sulfuric acid. Tetramethyl- and Dimethylethyladamantanes synthesized by of isomerization of Perhydroanthracene in the presence of aluminium oxide catalyst on the setting of the flow type. Isomers Butyladamantanes ... Show More
  • Consideration of Contamination Status of Soils within the Vicinity of Automobile Workshops in Warri, Delta State, Nigeria

    Doris Fovwe Ogeleka, Oghenekohwiroro Edjere, Ogechi Okokon-Ndem Nmai, Prisca Ezeogu, Felix Ebodaghe Okieimen

    Issue: Volume 6, Issue 4, August 2018
    Pages: 56-65
    Received: 17 July 2018
    Accepted: 20 August 2018
    Published: 26 October 2018
    Abstract: This research appraised the extent of contamination in soils within the vicinity of automobile workshops in Warri, Delta State, Nigeria. This was with the view of ascertaining the effects of the estimated contamination would have on the quality of soils and terrestrial organisms in the impacted soils. The soils were moderate to slightly acidic with... Show More
  • Oxidation State of 229Th Recoils Implanted into MgF2 Crystals

    Beau J. Barker, Edmund R. Meyer, Michael H. Schacht, Lee A. Collins, Marianne P. Wilkerson, Jason K. Ellis, Richard L. Martin, Xinxin Zhao

    Issue: Volume 6, Issue 4, August 2018
    Pages: 66-76
    Received: 31 August 2018
    Accepted: 25 September 2018
    Published: 31 October 2018
    Abstract: A solid-state nuclear clock based on the low-lying isomeric state in 229Th has attracted growing interest. One potential problem for the solid-state nuclear clock approach is the suitability of the doped environment for photon emission of the nuclear isomeric state. Specifically, Thn+ n < 4 ions could open non-radiative decay routes for deexcitation, hindering the photon emission. Here we have used time-resolved photoluminescence (TRPL) and density functional theory (DFT) calculations to characterize MgF2 crystals that have been implanted with 229Th recoils via a-d... Show More