Surface catalytic effect of liposome formation on lecithin-iodine interaction. A kinetic study

Langmuir ◽  
1989 ◽  
Vol 5 (4) ◽  
pp. 1035-1037
Author(s):  
Ira Chatterjee ◽  
Benoy B. Bhowmik ◽  
Papiya Nandy
Keyword(s):  
Kinetic Study ◽  
Catalytic Effect

Kinetic Study on the Catalytic Effect of Ionic Liquids on the Polymerization of Methyl Methacrylate Co-initiated by Imine Bases

2014 ◽  
Vol 216 (4) ◽  
pp. 386-394
Author(s):  
Ingmar Polenz ◽  
Ivan Tchernook ◽  
Joachim Friedrich ◽  
Friedrich Georg Schmidt ◽  
Stefan Spange
Keyword(s):  
Ionic Liquids ◽  
Methyl Methacrylate ◽  
Kinetic Study ◽  
Catalytic Effect

Catalytic effect of silver-bearing solid waste on chalcopyrite bioleaching: A kinetic study

2020 ◽  
Vol 27 (5) ◽  
pp. 1395-1403
Author(s):  
Rui Liao ◽  
Xing-xing Wang ◽  
Bao-jun Yang ◽  
Mao-xing Hong ◽  
Hong-bo Zhao ◽  
...  
Keyword(s):  
Kinetic Study ◽  
Solid Waste ◽  
Catalytic Effect

scholarly journals Determination of Dissolution Rates of Ag Contained in Metallurgical and Mining Residues in the S2O32−-O2-Cu2+ System: Kinetic Analysis

Minerals ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 309 ◽  
Author(s):  
Julio Juárez Tapia ◽  
Francisco Patiño Cardona ◽  
Antonio Roca Vallmajor ◽  
Aislinn Teja Ruiz ◽  
Iván Reyes Domínguez ◽  
...  
Keyword(s):  
Kinetic Study ◽  
Dissolution Rate ◽  
Catalytic Effect ◽  
Particle Diameter ◽  
Favorable Effect ◽  
Leaching Rate ◽  
Materials Used ◽  
Mining Residues ◽  
Thiosulfate Concentration

The materials used to conduct kinetic study on the leaching of silver in the S2O32−-O2-Cu2+ system were mining residues (tailings) from the Dos Carlos site in the State of Hidalgo, Mexico, which have an estimated concentration of Ag = 71 g∙ton−1. The kinetic study presented in this paper assessed the effects of the following variables on Ag dissolution rate: particle diameter (d0), temperature (T), copper concentration [Cu2+], thiosulfate concentration [S2O32−], pH, [OH−], stirring rate (RPM), and partial pressure of oxygen (PO2). Temperature has a favorable effect on the leaching rate of Ag, obtaining an activation energy (Ea) = 43.5 kJ∙mol−1 in a range between 288 K (15 °C) and 328 K (55 °C), which indicates that the dissolution reaction is controlled by the chemical reaction. With a reaction order of n = 0.4, the addition of [Cu2+] had a catalytic effect on the leaching rate of silver, as opposed to not adding it. The dissolution rate is dependent on [S2O32−] in a range between 0.02 mol·L−1 and 0.06 mol·L−1. Under the studied conditions, variables d0, [OH−] and RPM did not have an effect on the overall rate of silver leaching.

A kinetic study of the influence of alcohols on the nitrosation of morpholine in acid media. Equilibrium constants for the formation of alkyl nitrites

1984 ◽  
Vol 62 (1) ◽  
pp. 136-138 ◽  
Author(s):  
Julio Casado ◽  
Francisco Manuel Lorenzo ◽  
Manuel Mosquera ◽  
Maria Flor Rodriguez Prieto
Keyword(s):  
Kinetic Study ◽  
Nitrous Acid ◽  
Kinetic Data ◽  
Catalytic Effect ◽  
Equilibrium Constants ◽  
Inhibitory Effect ◽  
Aliphatic Alcohols ◽  
Acid Media ◽  
Alkyl Nitrites ◽  
Alkyl Nitrite

The effect of the aliphatic alcohols methanol, ethanol, propanol, isopropanol, 2-butanol, isobutanol, and tert-butanol on the rate of nitrosation of morpholine at pH 3 and 25 °C has been studied. The inhibition observed is attributed to the formation of alkyl nitrites, which are poor nitrosating agents in acid media. The equilibrium constants for the formation of alkyl nitrites from nitrous acid and alcohols have been calculated both spectrophotometrically and from kinetic data for the inhibitory effect, and there is agreement between the two sets of results. The molar absorptivities at 265 nm of the alkyl nitrites have also been determined. When the concentration of alkyl nitrite is very low, a slight catalytic effect considered to be an effect of the medium has been observed.

Catalytic Effect of Iron and Nickel on Gas Formation from Fast Biomass Pyrolysis in a Microfluidized Bed Reactor: A Kinetic Study

2017 ◽  
Vol 31 (11) ◽  
pp. 12278-12287 ◽  
Author(s):  
Yuan Liu ◽  
Feiqiang Guo ◽  
Xiaolei Li ◽  
Tiantao Li ◽  
Kuangye Peng ◽  
...  
Keyword(s):  
Kinetic Study ◽  
Catalytic Effect ◽  
Biomass Pyrolysis ◽  
Gas Formation

Catalytic effect of a single water molecule on the atmospheric reaction of HO2 + OH: fact or fiction? A mechanistic and kinetic study

RSC Advances ◽  
2013 ◽  
Vol 3 (20) ◽  
pp. 7381 ◽  
Author(s):  
Tianlei Zhang ◽  
Wenliang Wang ◽  
Chunying Li ◽  
Yongmei Du ◽  
Jian Lü
Keyword(s):  
Water Molecule ◽  
Kinetic Study ◽  
Catalytic Effect ◽  
Single Water Molecule ◽  
Atmospheric Reaction
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