Pyrolysis behaviors of model compounds with representative oxygen-containing functional groups in coal over calcium

Fuel ◽  
2022 ◽  
Vol 310 ◽  
pp. 122247
Author(s):  
Yanpeng Ban ◽  
Lijun Jin ◽  
Fanggang Liu ◽  
Jialong Zhu ◽  
Yang Li ◽  
...  
Keyword(s):  
Functional Groups ◽  
Model Compounds

Effect of functional groups on hydrogenolysis of lignin model compounds

2016 ◽  
Vol 154 ◽  
pp. 132-138 ◽  
Author(s):  
Guodian Zhu ◽  
Xinping Ouyang ◽  
Linfeng Jiang ◽  
Yuan Zhu ◽  
Dongxue Jin ◽  
...  
Keyword(s):  
Functional Groups ◽  
Model Compounds ◽  
Lignin Model Compounds ◽  
Lignin Model

Filler-Elastomer Interactions. Part I: Silica Surface Energies and Interactions with Model Compounds

1991 ◽  
Vol 64 (4) ◽  
pp. 559-576 ◽  
Author(s):  
Meng-Jiao Wang ◽  
Siegfried Wolff ◽  
Jean-Baptiste Donnet
Keyword(s):  
Functional Groups ◽  
Phenyl Ring ◽  
Silica Surface ◽  
Rubber Matrix ◽  
Low Molecular Weight ◽  
Free Energies ◽  
Model Compounds ◽  
Surface Energies ◽  
Surface Areas ◽  
Degree Of Unsaturation

Abstract Inverse gas-solid chromatography, operated at infinite dilution, has been used to assess the surface energies of silicas, both fumed and precipitated. The dispersive components of the surface free energies of the silicas were calculated from the free energies of adsorption, corresponding to the —CH2— group, obtained from n-alkane adsorption. The specific components of the surface energies were evaluated separately by comparison of the free energies of adsorption of polar probes with those of n-alkanes, based on the surface areas covered by the probe molecules. The results indicate that while the dispersive components of silica surface energies is somewhat higher for the fumed silicas, the specific components are much higher for precipitated silicas, probably resulting from the higher silanol concentration on their surfaces. Moreover, the interaction able to take place between rubber matrix and the silicas are also estimated chromatographically from the adsorptions of low-molecular-weight analogs of elastomers. The free energies and enthalpies indicate that the interactions of functional groups with the fillers decrease in the order of nitrile, phenyl ring, double bond. The saturated rubber analogs show lower interactions with silicas. The lowest interactions of iso-alkanes imply poor interactions between butyl rubber and the fillers. As expected, the experimental data reflect an attenuation of polymer-silica interactions with decreasing content of functional groups and degree of unsaturation in NR, BR, SBR, and NBR.

scholarly journals Chlorite formation during ClO2 oxidation of model compounds having various functional groups and humic substances

2019 ◽  
Vol 159 ◽  
pp. 348-357 ◽  
Author(s):  
Wenhui Gan ◽  
Sirong Huang ◽  
Yuexian Ge ◽  
Tom Bond ◽  
Paul Westerhoff ◽  
...  
Keyword(s):  
Humic Substances ◽  
Functional Groups ◽  
Model Compounds

Thermal Dehydrochlorination of Poly(vinyl chloride) Model Compounds. II. Computer Analysis of Kinetic Results

1991 ◽  
Vol 44 (4) ◽  
pp. 581 ◽  
Author(s):  
NM Boughdady ◽  
KR Chynoweth ◽  
DG Hewitt
Keyword(s):  
Computer Simulation ◽  
Thermal Degradation ◽  
Functional Groups ◽  
Vinyl Chloride ◽  
Computer Analysis ◽  
Condensed Phase ◽  
Allylic Rearrangement ◽  
Model Compounds ◽  
Relative Significance ◽  
Poly Vinyl Chloride

Computer simulation has been used to analyse the condensed-phase thermal degradation of a series of compounds with functional groups related to defects found in poly(vinyl chloride) ( pvc ). We have been able to estimate the relative significance of catalysed and non- catalysed processes and make some estimates of the significance of allylic rearrangement.

The Contamination Behavior of System Derived Organic Model Compounds on PEMFC Based upon Functional Groups

2015 ◽  
Vol 162 (9) ◽  
pp. F1056-F1067 ◽  
Author(s):  
Hyun-Seok Cho ◽  
Mayukhee Das ◽  
Md. S. Opu ◽  
Masato Ohashi ◽  
J. W. Van Zee
Keyword(s):  
Functional Groups ◽  
Model Compounds
Sign in / Sign up

Export Citation Format

Share Document