Qualitative and Quantitative NMR Analysis of 1,2-Butanediol in Polymer Grade Coal-Based Ethylene Glycol

• Main Authors: YU Gang-jin, ZHOU Zhi-ming, LV Ming, QIAN Sheng-tao, KONG Yu-hua, ZHANG Xu, MAO Shi-zhen, LIU Mai-li
• Format: Article
• Language: zho
• Published: Science Press 2019-03-01
• Series: Chinese Journal of Magnetic Resonance
• Subjects: liquid NMR; signal suppression; impurity identification; polymer grade coal-based ethylene glycol; 1; 2-butanediol
• Online Access: http://html.rhhz.net/bpxzz/html/20190106.htm

Ethylene glycol is a raw chemical material for production of polyester fibers used in coating material, dynamite and etc. The presence of trace methyne (CH) containing impurities greatly affects the quality, transportation and storage of ethylene glycol. So far it is difficult to analyze these trace impurities quickly with the traditional methods. Hereby, we demonstrated a simple procedure to analyze the key impurity (1, 2-butanediol) in polymer grade coal-based ethylene glycol by the nuclear magnetic resonance (NMR) multiple signal suppression technique combined with peak shape analysis.