Cheng Weijie, Guo Shaoqing, Sun Zhengxuan, Wei Xian-Xian, Gao Libing, Cao Yanzhi
School of Environment and Resources, Taiyuan University of Science and Technology, Taiyuan, Shanxi 030024, P. R. China.
ACS Omega. 2023 May 1;8(19):16612-16619. doi: 10.1021/acsomega.2c06981. eCollection 2023 May 16.
The metallic elements in high-temperature coal tar pitch (HCTP) will affect the properties of carbon materials produced from the HCTP. The study on the metallic elements in HCTP is essential for the quality improvement of its derived carbon materials. In this paper, the content of 15 metallic elements in HCTP and its four group components, including -heptane-soluble substance (HS), -heptane-insoluble-toluene-soluble substance (HI-TS), toluene-insoluble-quinoline-soluble substance (TI-QS), and quinoline-insoluble substance (QI), was determined. The results show that the content of Na, Ca, Fe, Mg, Zn, K, Pb, and Al is more than 100 ppm and is much higher than that of other metallic elements. The content of Ni, V, Cr, Mo, Sb, Cu, and Mn ranges from 0 to 50 ppm. By mass calculation of the contents of four group components in HCTP, it can be concluded that Na and Fe are randomly distributed in the group components. Al, Zn, Pb, V, and Mn are mainly distributed in the inorganic form in the QI component. Ca, Mg, K, Ni, Cr, Mo, Sb, and Cu are mainly distributed in the small molecular group components such as HS and HI-TS.
高温煤焦油沥青（HCTP）中的金属元素会影响由HCTP制备的炭材料的性能。研究HCTP中的金属元素对于提高其衍生炭材料的质量至关重要。本文测定了HCTP及其四个族组分（包括正庚烷可溶物（HS）、正庚烷不溶-甲苯可溶物（HI-TS）、甲苯不溶-喹啉可溶物（TI-QS）和喹啉不溶物（QI））中15种金属元素的含量。结果表明，Na、Ca、Fe、Mg、Zn、K、Pb和Al的含量超过100 ppm，远高于其他金属元素。Ni、V、Cr、Mo、Sb、Cu和Mn的含量在0至50 ppm之间。通过对HCTP中四个族组分含量进行质量计算可知，Na和Fe在族组分中呈随机分布。Al、Zn、Pb、V和Mn主要以无机形式分布在QI组分中。Ca、Mg、K、Ni、Cr、Mo、Sb和Cu主要分布在HS和HI-TS等小分子族组分中。
