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pro vyhledávání: '"M.J.D. Low"'
Autor:
M.J.D. Low
Publikováno v:
Spectroscopy Letters. 26:453-459
Nearly fifty years have passed since Sutherland et al. [1] found that coal had a discrete infrared (IR) spectrum and pointed out that the group frequency approach would be useful in obtaining structural information from the absorptions in various reg
Publikováno v:
Materials Chemistry and Physics. 28:9-31
Chars prepared by pyrolyzing polyvinyl chloride, polyvinyl bromide, and polyvinyl fluoride in vacuum were oxidized in pure 0 2 at 150 Torr over the 100–600°C range. The chars were chosen to be representative of each of the different stages of the
Autor:
M.J.D. Low, Ning Wang
Publikováno v:
Materials Chemistry and Physics. 27:359-374
Although coconut chars have been used extensively as adsorbents for a century, they have not been studied spectroscopically. Consequently, infrared spectra were recorded, using FT photothermal beam deflection spectroscopy, of coconut shell heated in
Publikováno v:
Materials Chemistry and Physics. 27:155-179
Fourier transform photothermal beam deflection spectroscopy was used to record the spectra of chars produced by heating in vacuo pure polyvinylidene chloride (PVDC) and the copolymer Saran over the 100–690°C range. The infrared spectra obtained pr
Autor:
Wang Ning, M.J.D. Low
Publikováno v:
Materials Chemistry and Physics. 26:465-481
Series of infrared spectra were recorded of chars produced by heating sucrose in vacuum at successively increasing temperatures, up to 750°C. Photothermal beam deflection spectroscopy was used. Some of the aliphatic components of the sucrose melt ar
Autor:
Ning Wang, M.J.D. Low
Publikováno v:
Materials Chemistry and Physics. 26:117-130
Rice hulls were pyrolyzed in vacuo at various temperatures up to 800°C and infrared spectra of the chars were recorded using FT phototherma l beam deflection spectroscopy. There was a substantial weight loss in the 200–400°C range during which th
Publikováno v:
Materials Chemistry and Physics. 26:193-209
Fourier transform photothermal beam deflection spectroscopy was used to examine chars produced by heating pure polyvinylidene fluoride (PVDF) in a N2 stream at temperatures ranging from 300 to 700°C. The infrared spectra obtained provide direct info
Autor:
M.J.D. Low, Ning Wang
Publikováno v:
Materials Chemistry and Physics. 26:67-80
A purified lignin, composed mainly of guaiacyl units and prepared by the Kraft process, was pyrolyzed in vacuo at temperatures up to 700°C. Infrared spectra of the chars at various stages of formation were recorded with Fourier transform phototherma
Spectroscopic studies of carbons. XIV. The vacuum pyrolysis of non-oxygen containing materials : PVF
Publikováno v:
Materials Chemistry and Physics. 25:501-521
Although the degradation of polyvinyl fluoride (PVF) has been studied, emphasis has been placed on weight loss analyses and the study of the gases evolved during the degradation process. Little is currently known about the nature of the pyrolytic res
Publikováno v:
Spectroscopy Letters. 23:527-531
When organic materials are charred at low or medium temperatures (up to about 450–500°C), their infrared (IR) spectra show a plethora of bands below about 2000 cm−1, and there are additional bands in the OH and CH stretching regions, above about