Characterization of Fe2+ ions in Fe,H/SSZ-13 zeolites: FTIR spectroscopy of CO and NO probe molecules

2016 ◽  
Vol 18 (15) ◽  
pp. 10473-10485 ◽  
Author(s):  
János Szanyi ◽  
Feng Gao ◽  
Ja Hun Kwak ◽  
Márton Kollár ◽  
Yilin Wang ◽  
...  
Keyword(s):  
Ftir Spectroscopy ◽  
Ftir Spectra ◽  
Probe Molecules

FTIR spectra of adsorbed NO and CO were used to characterize Fe2+ ions in different cationic positions in Fe,H/SSZ-13 zeolites.

scholarly journals Characterization of essential oils extracted from different aromatic plants by FTIR spectroscopy

2017 ◽  
Vol 74 (1) ◽  
pp. 37 ◽  
Author(s):  
Maria Ioana MORAR ◽  
Florinela FETEA ◽  
Ancuta Mihaela ROTAR ◽  
Melinda NAGY ◽  
Cristina Anamaria SEMENIUC
Keyword(s):  
Essential Oils ◽  
Ftir Spectroscopy ◽  
Ftir Spectra ◽  
Aromatic Plants

Four essential oils isolated from dried leaves of parsley, lovage, basil, and thyme were investigated by FTIR spectroscopy. FTIR spectra revealed characteristic key bands for the main compounds of tested essential oils.

scholarly journals Quantitative and Qualitative Characterization of Gentiana rigescens Franch (Gentianaceae) on Different Parts and Cultivations Years by HPLC and FTIR Spectroscopy

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Lu-Ming Qi ◽  
Ji Zhang ◽  
Yan-Li Zhao ◽  
Zhi-Tian Zuo ◽  
Hang Jin ◽  
...  
Keyword(s):  
Medicinal Plant ◽  
Ftir Spectroscopy ◽  
Metabolic Profile ◽  
Iridoid Glycosides ◽  
Ftir Spectra ◽  
Comprehensive Investigation ◽  
Gentiana Rigescens ◽  
Different Parts

Gentiana rigescens Franch (Gentianaceae) is a famous medicinal plant for treatments of rheumatism, convulsion, and jaundice. Comprehensive investigation of different parts and cultivation years of this plant has not yet been conducted. This study presents the quantitative and qualitative characterization of iridoid glycosides from G. rigescens performed by HPLC and FTIR spectroscopy techniques. The accumulations of loganic acid, swertiamarin, gentiopicroside, and sweroside were determined. Results indicated that their content and distribution in different parts and cultivation years exhibit great variations. Gentiopicroside was identified as the most abundant compound among iridoid glycosides and its highest level was observed in the root of 2-year-old plant. With respect to qualitative variation of metabolic profile, the 1800–800 cm−1 band of FTIR spectra successfully discriminated different parts and cultivation years with the aid of PLS-DA. In addition, combined with PLSR, the feasibility of FTIR spectroscopy for determination of gentiopicroside was investigated by selecting characteristic wavelengths (1800–800 cm−1), which presented a good performance with a residual predictive deviation (RPD) of 3.646. Our results suggested that HPLC and FTIR techniques can complement each other and could be simultaneously applied for comparing and analyzing different parts and cultivation years of G. rigescens.

Characterization of fluoro-edenite by μ-Raman and μ-FTIR spectroscopy

2006 ◽  
Vol 70 (3) ◽  
pp. 291-298 ◽  
Author(s):  
C. Rinaudo ◽  
S. Cairo ◽  
D. Gastaldi ◽  
A. Gianfagna ◽  
S. Mazziotti Tagliani ◽  
...  
Keyword(s):  
Ftir Spectroscopy ◽  
Ftir Spectra ◽  
Mt Etna ◽  
Crystallographic Characteristics

AbstractThe prismatic variety of fluoro-edenite, a new amphibole found in lavas from Mt Etna in Biancavilla (Catania Province, Sicily, Italy), has been characterized by μ-Raman and μ-FTIR spectroscopy. The wavenumbers at which the bands are detected in the μ-Raman and μ-FTIR spectra are compared with tremolite, asbestos the chemical and crystallographic characteristics of which are very similar to those of fluoro-edenite.

Characterisation of Porous Materials by FTIR Spectroscopy of Isotopically Labelled Probe Molecules

2012 ◽  
Vol 2 (2) ◽  
pp. 151-161
Author(s):  
Konstantin Hadjiivanov ◽  
Kristina Chakarova ◽  
Nikola Drenchev ◽  
Mihail Mihaylov
Keyword(s):  
Porous Materials ◽  
Ftir Spectroscopy ◽  
Probe Molecules

scholarly journals Deposition of Zinc Oxide Coatings on Wood Surfaces Using the Solution Precursor Plasma Spraying Process

Coatings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 183
Author(s):  
Ghiath Jnido ◽  
Gisela Ohms ◽  
Wolfgang Viöl
Keyword(s):  
Zinc Oxide ◽  
Ftir Spectroscopy ◽  
Photoelectron Spectroscopy ◽  
Color Change ◽  
Uv Light ◽  
Beech Wood ◽  
Nitrate Solution ◽  
Ftir Spectra ◽  
Solution Precursor ◽  
Wood Surfaces

In the present work, the solution precursor plasma spray (SPPS) process was used to deposit zinc oxide (ZnO) coatings on wood surfaces using zinc nitrate solution as precursor to improve the hydrophobicity and the color stability of European beech wood under exposure to ultraviolet (UV) light. The surface morphology and topography of the wood samples and the coatings were characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The formation of ZnO was detected with the help of X-ray photoelectron spectroscopy (XPS) and by Fourier transform infrared (FTIR) spectroscopy. The FTIR spectra of the coated samples showed the typical Zn–O band at 445 cm−1. According to the XPS analysis, the coatings consist of two different Zn-containing species: ZnO and Zn(OH)2. Variation of the deposition parameters showed that the most significant parameters affecting the microstructure of the coating were the solution concentration, the deposition scan speed, and carrier gas flow rate. The wettability behaviors of the coated wood were evaluated by measuring the water contact angle (WCA). The coatings that completely covered the wood substrates showed hydrophobic behaviors. UV-protection of wood surfaces after an artificial UV light irradiation was evaluated by color measurements and FTIR spectroscopy. The ZnO-coated wood surfaces were more resistant to color change during UV radiation exposure. The total color change decreased up to 60%. Additionally, the FTIR spectra showed that the wood surfaces coated with ZnO had more stability. The carbonyl groups formation and C=C-bonds consumption were significantly lower.

ChemInform Abstract: FTIR Spectroscopy of Adsorbed Probe Molecules for Analyzing the Surface Properties of Supported Pt (Pd) Catalysts

ChemInform ◽  
2013 ◽  
Vol 44 (51) ◽  
pp. no-no ◽  
Author(s):  
Olga B. Belskaya ◽  
Irina G. Danilova ◽  
Maxim O. Kazakov ◽  
Roman M. Mironenko ◽  
Alexander V. Lavrenov ◽  
...  
Keyword(s):  
Ftir Spectroscopy ◽  
Surface Properties ◽  
Probe Molecules ◽  
Pd Catalysts

Acidity of Alginate Aerogels Studied by FTIR Spectroscopy of Probe Molecules

2005 ◽  
Vol 230 (1) ◽  
pp. 71-77 ◽  
Author(s):  
Romain Valentin ◽  
Raluca Horga ◽  
Barbara Bonelli ◽  
Edoardo Garrone ◽  
Francesco Di Renzo ◽  
...  
Keyword(s):  
Ftir Spectroscopy ◽  
Probe Molecules
Sign in / Sign up

Export Citation Format

Share Document