scholarly journals Extraction and FTIR characterization of chitosan from Portunus pelagicus shell wastes

2018 ◽  
Vol 3 (10) ◽  
Author(s):  
Vigneshwari V. Gokula
Keyword(s):  
Portunus Pelagicus ◽  
Ftir Characterization

Versatile thin layer spectroelectrochemical cell employing specular reflectance

1987 ◽  
Vol 65 (5) ◽  
pp. 919-923 ◽  
Author(s):  
A. Scott Hinman ◽  
Brad J. Pavelich
Keyword(s):  
Thin Layer ◽  
Specular Reflection ◽  
Incident Light ◽  
Tetrabutylammonium Perchlorate ◽  
Specular Reflectance ◽  
Advantages And Disadvantages ◽  
Ftir Characterization ◽  
Sandwich Type

A versatile thin layer spectroelectrochemical cell employing specular reflection of the incident light beam from the electrode surface is described. Its application to in-situ uv–vis and FTIR characterization of the products of electrochemical reactions and to thin layer voltammetry and coulometry as well as conventional cyclic voltammetry is demonstrated for the oxidation of tetraphenylporphinatozinc in dichloroethane/tetrabutylammonium perchlorate solution. The advantages and disadvantages of this type of cell as compared to more conventional sandwich type optically transparent thin layer electrodes are discussed.

In situ FTIR characterization of the adsorption of CO and its reaction with NO on Pd-based FCC low NOx combustion promoters

2007 ◽  
Vol 127 (1-4) ◽  
pp. 189-198 ◽  
Author(s):  
Oleg S. Alexeev ◽  
Sundaram Krishnamoorthy ◽  
Cody Jensen ◽  
Michael S. Ziebarth ◽  
George Yaluris ◽  
...  
Keyword(s):  
In Situ Ftir ◽  
Ftir Characterization ◽  
Low Nox Combustion ◽  
Adsorption Of Co ◽  
Combustion Promoters

XRD, SEM/EDX and FTIR Characterization of Brazilian Natural Coral

2005 ◽  
pp. 43-46
Author(s):  
Herman S. Mansur ◽  
Alexandra A.P. Mansur ◽  
Marivalda Pereira
Keyword(s):  
Ftir Characterization ◽  
Natural Coral

Amber Sources and Trade in the Prehistory of the Iberian Peninsula

2012 ◽  
Vol 15 (2) ◽  
pp. 187-216 ◽  
Author(s):  
Mercedes Murillo-Barroso ◽  
Marcos Martinón-Torres
Keyword(s):  
Iberian Peninsula ◽  
Northern Europe ◽  
Review Of The Literature ◽  
Long Distance ◽  
Trade Networks ◽  
Ftir Characterization ◽  
Fossil Resin ◽  
Chalcolithic Period ◽  
The Fourier Transform

The use of amber is documented in the Iberian peninsula since the Palaeolithic. The procurement and trade of this fossil resin has often been considered in discussions of long-distance trade and the emergence of social complexity, but so far no comprehensive view of the Iberian evidence has been produced to allow a more overarching interpretive model. This paper presents the Fourier-transform infrared spectroscopy (FTIR) characterization of archaeological amber from three Iberian prehistoric sites: a necklace recovered from the megalithic site of Palacio III (Almadén de la Plata, Sevilla), a pommel from PP4 Montelirio (Valencina de la Concepción, Sevilla), and a necklace from the Muricecs de Cellers cave (Llimiana, Pallars Jussà, Lleida). Based on these new data and a review of the literature, we present an overview that outlines fluctuations in the use of amber since the Upper Palaeolithic and demonstrates long-distance amber exchange connecting Iberia with northern Europe and the Mediterranean region since the Chalcolithic period at least. We discuss changes in the origins and cultural use of amber and their implications for the consolidation of trade networks.

scholarly journals Development of FTIR Spectroscopy Methodology for Characterization of Boron Species in FCC Catalysts

Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1327 ◽  
Author(s):  
Claire Chunjuan Zhang ◽  
Xingtao Gao ◽  
Bilge Yilmaz
Keyword(s):  
Structural Information ◽  
Glass Ceramics ◽  
Boron Trioxide ◽  
Fcc Catalyst ◽  
Ftir Characterization ◽  
Wide Range ◽  
The World ◽  
Contaminant Metals ◽  
Fcc Catalysts

Fluid Catalytic Cracking (FCC) has maintained its crucial role in refining decades after its initial introduction owing to the flexibility it has as a process as well as the developments in its key enabler, the FCC catalyst. Boron-based technology (BBT) for passivation of contaminant metals in FCC catalysts represents one such development. In this contribution we describe Fourier Transform Infrared Spectroscopy (FTIR) characterization of boron-containing catalysts to identify the phase and structural information of boron. We demonstrate that FTIR can serve as a sensitive method to differentiate boron trioxide and borate structures with a detection limit at the 1000 ppm level. The FTIR analysis validates that the boron in the FCC catalysts studied are in the form of small borate units and confirms that the final FCC catalyst product contains no detectable isolated boron trioxide phase. Since boron trioxide is regulated in some parts of the world, this novel FTIR methodology can be highly beneficial for further FCC catalyst development and its industrial application at refineries around the world. This new method can also be applied on systems beyond catalysts, since the characterization of boron-containing materials is needed for a wide range of other applications in the fields of glass, ceramics, semiconductors, agriculture, and pharmaceuticals.

DSC and FTIR characterization of biodegradation of polyethylene

1992 ◽  
Vol 32 (6) ◽  
pp. 438-442 ◽  
Author(s):  
D. Raghavan ◽  
A. E. Torma
Keyword(s):  
Ftir Characterization
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