کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1238866 968960 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Raman spectra of gas hydrates—differences and analogies to ice 1h and (gas saturated) water
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Raman spectra of gas hydrates—differences and analogies to ice 1h and (gas saturated) water
چکیده انگلیسی

It is generally accepted that Raman spectroscopic investigations of gas hydrates provide vital information regarding the structure of the hydrate, hydrate composition and cage occupancies, but most research is focused on the vibrational spectra of the guest molecules. We show that the shape and position of the Raman signals of the host molecules (H2O) also contain useful additional information. In this study, Raman spectra (200–4000 cm−1) of (mixed) gas hydrates with variable compositions and different structures are presented. The bands in the OH stretching region (3000–3800 cm−1), the OH bending region (1600–1700 cm−1) and the OO hydrogen bonded stretching region (100–400 cm−1) are compared with the corresponding bands in Raman spectra of ice Ih and liquid water. The interpretation of the differences and similarities with respect to the crystal structure and possible interactions between guest and host molecules are presented.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 61, Issue 10, August 2005, Pages 2399–2403
نویسندگان
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