Functional Forms of Carbon and Chlorine in Dust Samples Formed in the Sintering Process of Iron Ores

Functional Forms of Carbon and Chlorine in Dust Samples Formed in the Sintering Process of Iron Ores
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铁矿石烧结过程中形成的粉尘样品中碳和氯的功能形态

DOI:
10.2355/tetsutohagane1955.91.10_751
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发表时间:
2005
影响因子:
0.3
通讯作者:
Y. Ohtsuka
Y. Ohtsuka
中科院分区:
材料科学4区
文献类型:
--
作者:
N. Tsubouchi;E. Kasai;K. Kawamoto;Noda Hidetoshi;Yoshihiro Nakazato;Y. Ohtsuka

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简介:用X射线衍射(XRD)和X射线光电子能谱(XPS)研究了烧结机风箱粉尘中碳和氯的化学形态。粉尘样品中的氯以KCl的形式存在,平均晶体尺寸为40-50 nm,未燃烧碳表面的稠合芳族结构中存在共价C-Cl键。氯代芳香族结构的比例几乎线性增加,未燃烧的碳上的表面氧络合物的增加,强烈表明在烧结过程中形成的碳的活性表面位点的工作与HCl和Cl 2的反应位点。模型前-
Synopsis : The chemical forms of the carbon and chlorine present in dust samples obtained from windboxes of the iron are sintering machine have been studied with X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The chlorine in the dust samples is present as KCl with the average crystalline size of 40-50 nm and covalent C-Cl bonds in condensed aromatic structures of unburned carbon surface. The proportion of chlorinated aromatic structures increases almost linearly with increasing that of surface oxygen complexes on unburned carbon, strongly suggesting that active surface sites of the carbon formed in the sintering process work as reaction sites with HCl and Cl2. Model ex-
DOI: 10.1021/es034041h
发表时间: 2003-04
影响因子: 11.4
作者:
S. Kuzuhara;H. Sato;E. Kasai;T. Nakamura
通讯作者: S. Kuzuhara;H. Sato;E. Kasai;T. Nakamura