The XPS Analysis of Surface Texture of Different-Density-Level Coking Coal of Fenxi County

Abstract

Abstract:In the present paper, X-ray photoelectron spectrum (XPS) is used to reveal the surface texture, main elements and occurrence mode of different-density-level sample coal of Fenxi County. The experimental results demonstrate that: (1) there is an extremely low content of nitrogen in the sample coal; (2) carbon mainly exists in the form of C-C and the contents of carbonyl (C=O) and carboxyl is still relatively low; (3) with the increasing of density, such content has a growing trend; (4) the organic sulfur of the coking coal in Fenxi County has the three major forms, i.e., （sub） sulfone, thiophene and thiol (ether), with their respective content in a low-to-high order.

Adsorption of Organic Constituents from Reverse Osmosis Concentrate in Coal Chemical Industry by Coking Coal

“…Three types of vibration peaks can be observed in the infrared spectrum of ROC. They are the absorption peaks of the associative amides C=O and N-H vibration peaks near 1647 cm −1 and 702 cm −1 , the peak of the aliphatic primary amine(C-N) near 1069 cm −1 [24] and the stretching vibration peak and deformation vibration peak of C-Cl near 624 cm −1 and 473 cm −1 .…”