Mössbauer and Raman spectroscopic characterization of iron and carbon in iron-loaded Japanese cypress charcoal
Mössbauer and Raman spectroscopic characterization of iron and carbon in iron-loaded Japanese cypress charcoal
复制标题
含铁日本柏木炭中铁和碳的穆斯堡尔和拉曼光谱表征
DOI：
10.1186/s10086-020-01930-y
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发表时间：
2020
影响因子：
2.9
通讯作者：
Y. Sakai
中科院分区：
文献类型：
--
作者：
Takayuki Yamagishi;S. Yamauchi;Kyoko Suzuki;Tsutomu Suzuki;Y. Kurimoto;T. Takayama;Y. Sakai
采用一步法和两步法对浸渍Fe 3+的日本扁柏（Chamaparis obtusa）木粉进行炭化处理，并利用穆斯堡尔谱和拉曼光谱对炭化后的载铁炭进行分析，以阐明炭化后铁和碳的物理化学状态。在一步法中，穆斯堡尔谱证实了750 °C和800 °C的木炭粉中含有Fe 3C，表明Fe 3+的还原开始于低于750 °C。在850 °C和900 °C时，木炭样品中Fe 3C的含量显著增加，同时还检测到金属铁（γ -Fe和/或α -Fe）。活性炭在750 °C和800 °C的拉曼谱线形状与活性炭在850 °C和900 °C的拉曼谱线形状明显不同，表明活性炭在800-850 °C的温度范围内晶化速度较快。拉曼谱的变化与穆斯堡尔谱的变化相对应，即石墨化与Fe 3+的还原密切相关。在850 °C下，两步法制备的炭浆的石墨化度高于一步法制备的炭浆。穆斯堡尔谱表明，两步碳化提高铁物种的产率在载铁木炭。
Japanese cypress ( Chamaecyparis obtusa ) wood powder impregnated with Fe 3+ ions was carbonized using one-step and two-step procedures, and the iron-loaded charcoal was examined using Mössbauer and Raman spectroscopy to elucidate the physicochemical states of iron and carbon after carbonization at various temperatures. In the one-step procedure, the Mössbauer spectra confirmed that charcoal carbonized at 750 °C and 800 °C contained Fe 3 C, suggesting that the reduction of Fe 3+ started at lower than 750 °C. The content of Fe 3 C increased substantially in charcoal carbonized at 850 °C and 900 °C, and metallic iron ( γ -Fe and/or α -Fe) was also detected in these charcoal samples. Raman spectral line-shapes of the charcoal carbonized at 750 °C and 800 °C were notably different from those of charcoal carbonized at 850 °C and 900 °C, which indicated that crystallization of carbon progressed rapidly in the temperature range 800–850 °C. The changes in Raman spectra probably corresponded to those in the Mössbauer spectra, namely, the graphitization was closely related to the reduction of Fe 3+ . The degree of graphitization in the charcoal carbonized at 850 °C using the two-step procedure was higher than that using the one-step procedure. Mössbauer spectra suggested that the two-step carbonization enhances the yield of ferromagnetic iron species in iron-loaded charcoal.
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影响因子：
1.6
作者：
Tsutomu Suzuki;H. Matsuzaki;Kyoko Suzuki;Yukie Saito;S. Yasui;N. Okazaki;Tetsuo Yamada
通讯作者：
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载镍木炭中石墨纳米结构形成的电子显微镜研究
影响因子：
10.9
作者：
Y. Kodama;K. Sato;K. Suzuki;Y. Saito;T. Suzuki;T. J. Konno
通讯作者：
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镍催化木材碳化联产功能性碳和流体燃料 II：改善油馏分的燃料质量并增加气体馏分的热值
DOI：
--
发表时间：
2009
期刊：
J.Wood Sci. 55
影响因子：
--
作者：
K. Suzuki;T. Suzuki;Y. Takahashi;M. Okimoto;T. Yamada;N. Okazaki;Y. Shimizu;M. Fujiwara
通讯作者：
M. Fujiwara
DOI：
--
发表时间：
2010
期刊：
影响因子：
--
作者：
Y. Koizumi;S. Sakashita;K. Suzuki;T. Suzuki;H. Tamai;重松彰・佐藤宣子;T.Suzuki
通讯作者：
T.Suzuki
镍催化木材碳化联产功能碳和流体燃料 I：结晶介孔碳的生产
DOI：
--
发表时间：
2007
期刊：
J.Wood Sci. 53
影响因子：
--
作者：
T. Suzuki;K. Suzuki;Y. Takahashi;M. Okimoto;T. Yamada;N. Okazaki;Y. Shimizu;M. Fujiwara
通讯作者：
M. Fujiwara