Micro‐Raman spectroscopy on analcime and pollucite in comparison to X‐ray diffraction

Presser, Volker; Kloužková, Alexandra; Mrázová, Martina; Kohoutková, Martina; Berthold, Christoph

doi:10.1002/jrs.1886

Cited by 21 publications

(10 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, one band seems to be located just below the 300 cm −1 range limit. The reference Raman bands positions are in a good agreement to our data: 298, 391, 479, 675, all due to O(Al,Si)O bending vibrations, and 1,109 cm −1 (Si,AlO stretching) . Using the manual settings, no fluorescence was present in the raw spectra.…”

Section: Resultssupporting

confidence: 83%

A database of Raman spectra of precious gemstones and minerals used as cut gems obtained using portable sequentially shifted excitation Raman spectrometer

Culka

Jehlička

2018

J Raman Spectroscopy

View full text Add to dashboard Cite

Raman spectra of 42 minerals, commonly and less frequently used as gemstones in gemmology s. s. or works of arts, have been recorded using a portable sequentially shifted excitation Raman spectrometer. Analyzed minerals include chrysoberyl, diamond, emerald, garnets, magnesiotaaffeite-2N'2S (taaffeite), magnesiotaaffeite-6N'3S (musgravite), ruby, topaz as well as other less precious minerals. Some minerals are represented by several different samples with various causes for fluorescence in order to ascertain the results of the fluorescence removal process on a larger set of natural mineralogical samples. This novel instrumentation is able to effectively suppress the laser-induced fluorescence that is sometimes present in the Raman spectra of natural and often coloured samples of mostly silicate minerals, and at the same time allow the analyses of gemstones and works of arts in situ, which can be important in many cases.

show abstract

Section: Resultssupporting

confidence: 83%

A database of Raman spectra of precious gemstones and minerals used as cut gems obtained using portable sequentially shifted excitation Raman spectrometer

Culka

Jehlička

2018

J Raman Spectroscopy

View full text Add to dashboard Cite

show abstract

“… (A) Optical image, combined Raman image, and components maps of a 7 day old AAM sample (B) Raman spectra of AAM’s components, raw metakaolin powder, reference Anatase (TiO 2 ) ( Zhang et al, 2000 ), and reference Analcime (Na(AlSi 2 O 6 )·H2O) ( Presser et al, 2008 ; Tsai et al, 2021 ). …”

Section: Resultsmentioning

confidence: 99%

“…Recently, Raman imaging has been instrumental in understanding various complex, heterogeneous systems such as granites (Polavaram and Garg, 2021b), pure cement phases (Potgieter-Vermaak et al, 2006), phase quantification in anhydrous cements (Polavaram and Garg, 2021a), hydrating cements (Loh et al, 2021), calcium aluminate cements (Black et al, 2006;Torréns-Martín et al, 2013a), and sulfate-attacked cementitious materials (Yue et al, 2013). The purpose of applying Raman spectroscopy and imaging here was to estimate the (Zhang et al, 2000), and reference Analcime (Na(AlSi 2 O 6 )•H2O) (Presser et al, 2008;Tsai et al, 2021).…”

Section: Spatial Phase Mapping Via Raman Spectroscopy and Imagingmentioning

confidence: 99%

Impact of Na/Al Ratio on the Extent of Alkali-Activation Reaction: Non-linearity and Diminishing Returns

Abdel‐Rahman

Garg

2022

Front. Chem.

View full text Add to dashboard Cite

To address the high CO2 footprint associated with cement production, many alternative, sustainable binders are now gaining worldwide attention–including alkali-activated materials. The alkali-activation reaction of metakaolin is a fairly complex process involving transformation of one amorphous reactant (precursor metakaolin) into another amorphous product or products (N-A-S-H gel and/or disordered zeolite type phases). In spite of this complexity, researchers in the past 2 decades have gained significant knowledge on the nature of this reaction at multiple scales. Understanding and developing a clear relationship between the alkalinity of the mix and the extent of reaction is of high interest for practical applications. However, detailed and thorough investigations on this important relationship are limited. Here, in this study, we address this gap by systematically investigating a series of alkali-activated materials samples with a wide range of Na/Al ratios (0.5–1.8) using seven different yet complementary analytical techniques (isothermal calorimetry, FTIR, XRD, TGA, NMR, and Raman imaging). Applied in tandem, these tools reveal a clear but non-linear relationship between the Na/Al ratio and the extent of alkali-activation reaction indicating diminishing returns at higher Na/Al ratios, where higher Na/Al ratios cause an increase in the degree of reaction until a certain point at which the increase in Na/Al ratio does not significantly affect the reaction kinetics, but may affect the gel polymerization. These findings could potentially aid decision making for commercial applications of AAMs where alkalinity of the mix is an important parameter for performance as well as safety.

show abstract

“…Other temperature-dependent Raman scattering studies were carried out by Saraiva et al [151] on the Na 2 MoO 4 crystal and by Chiang et al [152] on iron perchlorate hexahydrate (Fe(ClO 4 ) 2 · 6H 2 O). Raman scattering and X-ray diffraction studies on YBiTi 2 O 7 and on analcime and pollucite were carried out by Garbout et al [153] and Presser et al, [154] respectively.…”

Section: Vibrational Studies In Chemistry (Combined Raman Infrared mentioning

confidence: 99%

Recent advances in linear and non‐linear Raman spectroscopy. Part III

Kiefer

2009

J Raman Spectroscopy

View full text Add to dashboard Cite

Following the first two reviews on recent advances in linear and non-linear Raman spectroscopy, the present review summarises papers mainly published in the Journal of Raman Spectroscopy during 2008. This again serves to give a brief overview of recent advances in this research field and to provide readers of this journal a quick introduction to the various sub-fields of Raman spectroscopy. It also reflects the current research interests and trends in the Raman community.

show abstract

Micro‐Raman spectroscopy on analcime and pollucite in comparison to X‐ray diffraction

Cited by 21 publications

References 9 publications

A database of Raman spectra of precious gemstones and minerals used as cut gems obtained using portable sequentially shifted excitation Raman spectrometer

A database of Raman spectra of precious gemstones and minerals used as cut gems obtained using portable sequentially shifted excitation Raman spectrometer

Impact of Na/Al Ratio on the Extent of Alkali-Activation Reaction: Non-linearity and Diminishing Returns

Recent advances in linear and non‐linear Raman spectroscopy. Part III

Contact Info

Product

Resources

About