Studies on Cation Selectivities of Some Pyridine-Based Ionophores for Use in Polymer Membrane Chemical Sensors

1991 ◽  
Vol 44 (11) ◽  
pp. 1603 ◽  
Author(s):  
MRM Bates ◽  
TJ Cardwell ◽  
RW Cattrall ◽  
LW Deady ◽  
K Murphy
Keyword(s):  
Dicarboxylic Acid ◽  
Related Compound ◽  
Chemical Sensors ◽  
Membrane Electrodes ◽  
Macrocyclic Compounds ◽  
Cation Selectivity ◽  
Poly Vinyl Chloride ◽  
Class B ◽  
Sulfur Containing ◽  
Sulfur Containing Compounds

The synthesis of some macrocyclic compounds based on 4-octyloxypyridine-2,6-dicarboxylic acid, containing sulfur and/or oxygen atoms in the 2 to 6-bridging unit, along with some non-cyclic analogues is reported. These were tested for cation selectivity in poly(vinyl chloride)-based membrane electrodes. Little selectivity was found for any ion with the oxygen-containing compounds, and none approached the selectivity for potassium reported previously for a related compound. High bonding affinities for class b acceptors, particularly Ag+ and Hg2+, were found for sulfur-containing compounds. The complexation with Hg2+ was so strong that the electrodes showed behaviour characteristic of an anion response.

Potentiometric Sensors Based on Macrocyclic Ligands: 1,8-Naphthyridine and 1,10-Phenanthroline Derivatives

1992 ◽  
Vol 45 (6) ◽  
pp. 983 ◽  
Author(s):  
TJ Cardwell ◽  
RW Cattrall ◽  
LW Deady ◽  
KA Murphy ◽  
SS Tan
Keyword(s):  
Vinyl Chloride ◽  
Divalent Cations ◽  
Potassium Ion ◽  
Macrocyclic Ligands ◽  
Potentiometric Sensors ◽  
Macrocyclic Compounds ◽  
Cation Selectivity ◽  
Poly Vinyl Chloride ◽  
High Preference ◽  
Oxygen Atoms

The synthesis of some macrocyclic compounds based on 1,8-naphthyridine and 1,10-phenanthroline with rings containing four and five oxygen atoms is reported. These compounds were tested for cation selectivity in poly(vinyl chloride)-based potentiometric sensors. Nernstian esponse was observed towards the potassium ion but with low discrimination for potassium in the presence of other cations. Dimethyl 4-octyloxy-1,10-phenanthroline-2,9-dicarboxylate, a precursor to one of the macrocyclic series, showed a high preference for divalent cations such as Zn2+, Ba2+, Cu2+ and Co2+. .

Molecular Reconstruction of Hydrocarbons and Sulfur-Containing Compounds in Atmospheric and Vacuum Gas Oils

2021 ◽  
Author(s):  
Aleksandar Bojkovic ◽  
Thomas Dijkmans ◽  
Hang Dao Thi ◽  
Marko Djokic ◽  
Kevin M. Van Geem
Keyword(s):  
Sulfur Containing ◽  
Sulfur Containing Compounds

scholarly journals Effect of WC/Ni–Cr additive on changes in the composition of an atmospheric residue in the course of cracking

2019 ◽  
Vol 17 (2) ◽  
pp. 499-508 ◽  
Author(s):  
Galina S. Pevneva ◽  
Natalya G. Voronetskaya ◽  
Nikita N. Sviridenko ◽  
Anatoly K. Golovko
Keyword(s):  
Molecular Weight ◽  
Tungsten Carbide ◽  
Aromatic Hydrocarbons ◽  
Aromatic Compounds ◽  
Low Molecular Weight ◽  
Nickel Chromium ◽  
Atmospheric Residue ◽  
Sulfur Containing ◽  
Catalytic Additive ◽  
Sulfur Containing Compounds

AbstractThe paper presents the results of investigation of changes in the composition of hydrocarbons and sulfur-containing compounds of an atmospheric residue in the course of cracking in the presence of a tungsten carbide–nickel–chromium (WC/Ni–Cr) catalytic additive and without it. The cracking is carried out in an autoclave at 500 °C for 30 min. The addition of the WC/Ni–Cr additive promotes the deepening of reactions of destruction not only of resins and asphaltenes, but also high molecular weight naphthene-aromatic compounds of the atmospheric residue. It is shown that the content of low molecular weight C9–C17 n-alkanes and C9–C10 alkylbenzenes rose sharply in the products of cracking with addition of WC/Ni–Cr in comparison with those produced without the additive. Alkyl- and naphthene-substituted aromatic hydrocarbons of benzene, naphthalene, phenanthrene series, polyarenes, benzo- and dibenzothiophenes are identified.

Effect of sulfur-containing compounds on viscose ripening

1980 ◽  
Vol 11 (3) ◽  
pp. 208-210
Author(s):  
E. P. Ovchinnikova ◽  
L. S. Abramova ◽  
Z. A. Rogovin
Keyword(s):  
Sulfur Containing ◽  
Sulfur Containing Compounds

Studies on analogs of DAMASCENOLIDETM: Part 4. Synthesis and odor evaluation of sulfur-containing analogs of DAMASCENOLIDETM

2021 ◽  
Author(s):  
Yamato Miyazawa ◽  
Kenji Kawaguchi ◽  
Ryo Katsuta ◽  
Tomoo Nukada ◽  
Ken Ishigami
Keyword(s):  
Sulfur Atom ◽  
Development Project ◽  
Aroma Compounds ◽  
Odor Intensity ◽  
Aroma Compound ◽  
Odor Evaluation ◽  
Damask Rose ◽  
Sulfur Containing ◽  
Sulfur Containing Compounds

ABSTRACT DAMASCENOLIDETM [1, 4-(4-methylpent-3-en-1-yl)furan-2(5H)-one], which is isolated from damask rose, is a useful aroma compound with a citrus-like odor. We have previously reported on the synthesis and odor properties of 34 analogs of 1 as part of our new aroma compound development project. In order to develop better aroma compounds and to gather more information on structure-odor relationships, six novel sulfur-containing analogs of 1 were synthesized. Odor evaluation revealed that their odors differed significantly from those of the corresponding sulfur-free compounds. The introduction of a sulfur atom does not necessarily result in a sulfur-like odor. In particular, the 2(5H)-thiophenone analogs gave waxy, oily and lactone-like odors that are uncharacteristic of sulfur-containing compounds. In many synthesized analogs, the introduction of a sulfur atom led to an increase in odor intensity, as expected.

Control of the Nephrotoxicity of Cisplatin by Clinically Used Sulfur-Containing Compounds

1992 ◽  
Vol 18 (2) ◽  
pp. 181-188
Author(s):  
MARK M. JONES ◽  
MARK A. BASINGER ◽  
MYRON A. HOLSCHER
Keyword(s):  
Sulfur Containing ◽  
Sulfur Containing Compounds
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