An investigation of changes in structural parameters and organic functional groups of inertinite rich lignite during acid treatment processes

2021 ◽  
pp. 1-18
Author(s):  
Yash Jaiswal ◽  
Sunder Lal Pal ◽  
Harsh Jaiswal ◽  
Anusha Jain ◽  
Lav Kush ◽  
...  
Keyword(s):  
Functional Groups ◽  
Acid Treatment ◽  
Structural Parameters ◽  
Treatment Processes ◽  
Organic Functional Groups

Application of X-ray Photoelectron Spectroscopy to the Study of Fiberglass Surfaces

1974 ◽  
Vol 28 (3) ◽  
pp. 219-222 ◽  
Author(s):  
Gary D. Nichols ◽  
David M. Hercules ◽  
Roy C. Peek ◽  
Dennis J. Vaughan
Keyword(s):  
Functional Groups ◽  
Photoelectron Spectroscopy ◽  
Acid Treatment ◽  
X Ray ◽  
Organic Functional Groups ◽  
Glass Surfaces

The application of x-ray photoelectron spectroscopy (ESCA) to the study of fiberglass surfaces is reported. Qualitatively, ESCA has been used to show the change in concentration of elements at the surface when fiberglass is subjected to heat and/or acid treatment. Diffusion of calcium to the surface as a function of temperature has been studied. Similarly, leaching of aluminum by acid as a function of pH is reported. The ability of ESCA to detect organic functional groups attached to fiberglass surfaces has been demonstrated for nitrogen and sulfur. Fiberglass coated with organic groups having chelating properties has been shown to extract metals from solution. It has also been demonstrated that ESCA can follow reactions of organic functional groups on glass surfaces, namely sulfonation of an amine.

A Study of Surface Modification on Adsorption Behaviors of Nanoporous Carbon

2007 ◽  
Vol 119 ◽  
pp. 211-214 ◽  
Author(s):  
Byeoung Ku Kim ◽  
Young Seak Lee ◽  
Seung Kon Ryu ◽  
Byung Joo Kim ◽  
Soo Jin Park
Keyword(s):  
Nitric Acid ◽  
Functional Groups ◽  
Carbon Fibers ◽  
Acid Treatment ◽  
Surface Acidity ◽  
Activated Carbon Fibers ◽  
Adsorption Behaviors ◽  
Toxic Gases ◽  
Adsorption Amount ◽  
Polar Functional Groups

In this work, to introduce polar functional groups on carbon surfaces, activated carbon fibers (ACFs) were treated by nitric acid in order to enhance the adsorption capacity of propylamine which was one of toxic gases in cigarette smoke. It was found that the polar functional groups were predominantly increased up to 2.0 M of nitric acid, resulting in the increase of total surface acidity. It was found that the adsorption amount of propylamine of the modified ACFs was increased around 17% after a nitric acid treatment. From the XPS results, it was observed that propylamine was reacted with strong or weak polar (acidic) groups, such as COOH, -COO or OH existed on the ACF surfaces.

The Swiss army knife of biological catalysis: A compact toolkit of organic functional groups

Complexity ◽  
2006 ◽  
Vol 11 (3) ◽  
pp. 9-10 ◽  
Author(s):  
Harold J. Morowitz ◽  
Vijayasarathy Srinivasan ◽  
Eric Smith
Keyword(s):  
Functional Groups ◽  
Organic Functional Groups ◽  
Biological Catalysis

Colorimetric methods for determining organic functional groups. II

1969 ◽  
Vol 57 (4) ◽  
pp. 821-825 ◽  
Author(s):  
Walter L. Nazimowitz ◽  
T. S. Ma
Keyword(s):  
Functional Groups ◽  
Organic Functional Groups ◽  
Colorimetric Methods

Styrylsilane coupling reagents for immobilization of organic functional groups on silica and glass surfaces

2018 ◽  
Vol 54 (71) ◽  
pp. 9961-9964 ◽  
Author(s):  
Soo-Bin Kim ◽  
Chang-Hee Lee ◽  
Chul-Ho Jun
Keyword(s):  
Functional Groups ◽  
Coupling Reagents ◽  
Organic Functional Groups ◽  
Glass Surfaces

Styrylsilanes serve as new coupling reagents for introducing organic functional groups on silica and glass surfaces.

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