XPS Analysis of Carbon and Oxygen in Coking Coal with Different Density Intervals

Abstract:

Study on the occurrence state of carbon and oxygen in the coking coal has a certain guiding meaning to make the most use of coking coal. Divide coal samples into different density level by float-sink experiments, and then use XPS to investigate the types and content of carbon and oxygen. The XPS spectrum of raw coal shows that the elements of raw coal are mainly consists of carbon and oxygen, a little of sulfur and silicon. The fitting map indicates that the content of carbon decrease with the increasing density; oxygen is just the opposite. C-C and C-H are the main forms of carbon; Oxygen exists in the forms of C-O or C=O and-OH.

• Periodical: Applied Mechanics and Materials (Volumes 347-350)
• Pages: 1239-1243
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.347-350.1239
• Online since: August 2013
• Authors: Chuan Chuan Cai, Ming Xu Zhang
• Keywords: Carbon Oxygen Element, Coking Coal, Density, XPS

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