A mechanism study on preparation of rayon based carbon fibers with (NH4)2SO4/NH4Cl/organosilicon composite catalyst system

2007 ◽  
Vol 67 (13) ◽  
pp. 2675-2682 ◽  
Author(s):  
Hui Li ◽  
Yonggang Yang ◽  
Yuefang Wen ◽  
Lang Liu
Keyword(s):  
Carbon Fibers ◽  
Catalyst System ◽  
Composite Catalyst ◽  
Mechanism Study

scholarly journals Fabrication and characterization of the ternary composite catalyst system of ZnGA/RET/DMC for the terpolymerization of CO2, propylene oxide and trimellitic anhydride

RSC Advances ◽  
2021 ◽  
Vol 11 (15) ◽  
pp. 8782-8792
Author(s):  
Ningzhang Liu ◽  
Chuanhai Gu ◽  
Qinghe Wang ◽  
Linhua Zhu ◽  
Huiqiong Yan ◽  
...  
Keyword(s):  
Propylene Oxide ◽  
Ternary Complex ◽  
Catalyst System ◽  
Composite Catalyst ◽  
Trimellitic Anhydride ◽  
Ternary Composite ◽  
Metal Cyanide ◽  
Fabrication And Characterization ◽  
Poly Propylene

For poly(propylene carbonate trimellitic anhydride) with good yield, thermal stability and high molecular weight, a catalyst of zinc glutarate/rare earth ternary complex/double metal cyanide was used for terpolymerization of CO2, propylene oxide and trimellitic anhydride.

scholarly journals A mechanism study of acid-assisted oxidative stabilization of asphaltene-derived carbon fibers

Carbon Trends ◽  
2021 ◽  
pp. 100090
Author(s):  
Desirée Leistenschneider ◽  
Peiyuan Zuo ◽  
Yuna Kim ◽  
Zahra Abedi ◽  
Douglas G. Ivey ◽  
...  
Keyword(s):  
Carbon Fibers ◽  
Mechanism Study ◽  
Oxidative Stabilization

Syngas conversion to gasoline-range hydrocarbons over Pd/ZnO/Al2O3 and ZSM-5 composite catalyst system

2014 ◽  
Vol 123 ◽  
pp. 65-74 ◽  
Author(s):  
Robert A. Dagle ◽  
Jair A. Lizarazo-Adarme ◽  
Vanessa Lebarbier Dagle ◽  
Michel J. Gray ◽  
James F. White ◽  
...  
Keyword(s):  
Catalyst System ◽  
Composite Catalyst ◽  
Syngas Conversion

EXELFS Studies of Carbon Fibers

1990 ◽  
Vol 48 (2) ◽  
pp. 72-73
Author(s):  
V. Serin ◽  
K. Hssein ◽  
G. Zanchi ◽  
J. Sévely
Keyword(s):  
Carbon Fibers ◽  
Energy Analysis ◽  
Electron Excitation ◽  
Complex Structures ◽  
High Modulus ◽  
Promising Technique ◽  
X Ray ◽  
Fine Structures ◽  
X Ray Absorption

The present developments of electron energy analysis in the microscopes by E.E.L.S. allow an accurate recording of the spectra and of their different complex structures associated with the inner shell electron excitation by the incident electrons (1). Among these structures, the Extended Energy Loss Fine Structures (EXELFS) are of particular interest. They are equivalent to the well known EXAFS oscillations in X-ray absorption spectroscopy. Due to the EELS characteristic, the Fourier analysis of EXELFS oscillations appears as a promising technique for the characterization of composite materials, the major constituents of which are low Z elements. Using EXELFS, we have developed a microstructural study of carbon fibers. This analysis concerns the carbon K edge, which appears in the spectra at 285 eV. The purpose of the paper is to compare the local short range order, determined by this way in the case of Courtauld HTS and P100 ex-polyacrylonitrile carbon fibers, which are high tensile strength (HTS) and high modulus (HM) fibers respectively.

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