化工学报

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有机硅高沸物复杂组分化学结构解析

孙思涵1,2(), 张计梅1, 石艳春1,2(), 李加旺3, 敖艳波3, 李兴贵3, 张连永3, 马海悦3, 张琪4, 石昕4, 王磊1   

  1. 1.中国科学院绿色过程制造创新研究院,中国科学院过程工程研究所,北京 100190
    2.中国科学院大学,北京 100049
    3.云南能投硅材科技发展有限公司,云南 曲靖 655000
    4.中国化学中化二建集团有限公司,山西 太原 030021
  • 收稿日期:2025-06-19 修回日期:2025-09-10 出版日期:2025-12-30
  • 通讯作者: 石艳春
  • 作者简介:孙思涵(1996—),男,博士,助理研究员,sunsihan1996@qq.com
  • 基金资助:
    中央引导地方科技发展专项资金(202507AC040018)

Chemical structure analysis of complex components in organosilicone high-boiling residues

Sihan SUN1,2(), Jimei ZHANG1, Yanchun SHI1,2(), Jiawang LI3, Yanbo AO3, Xinggui LI3, Lianyong ZHANG3, Haiyue MA3, qi ZHANG4, Xin SHI4, Lei WANG1   

  1. 1.Innovation Academy for Green Manufacturing, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
    2.University of Chinese Academy of Sciences, Beijing 100049, China
    3.Yunnan Energy Investment Silicon Materials Technology Development Co. , Ltd. , Qujing 655000, Yunnan, China
    4.China Chemical Engineering Second Construction Corporation, Taiyuan 030021, Shanxi, China
  • Received:2025-06-19 Revised:2025-09-10 Online:2025-12-30
  • Contact: Yanchun SHI

摘要:

有机硅高沸物(HBRs),作为甲基氯硅烷单体生产中的主要副产物,其复杂化学组成的解析是制约资源化利用的关键瓶颈。本研究提出一种针对有机硅高沸物复杂组分化学结构解析方法。以某企业的高沸物样品为案例,通过分子离子峰识别、同位素峰簇分析及特征碎片离子解析,详细解析了其中42种组分(含37种新识别化合物),涵盖Si-Si、Si-Si-Si、Si-Cn、Si-CH2-Si和Si-O-Si等5类骨架结构。研究发现,Si-CH2-Si和Si-O-Si骨架稳定性高于Si-Si,氯原子数目可通过同位素峰比例精准推断;此外,揭示了甲基和氯的迁移机制源于氯原子的电负性诱导效应。本研究建立的解析方法为高沸物形成机理研究、合成工艺优化及催化转化技术开发提供了分子级数据支撑,助力有机硅产业绿色可持续发展。

关键词: 化学分析, 分子工程, 定性定量, 气质联用, 有机硅高沸物

Abstract:

As the main by-product of methylchlorosilane monomer production, the analysis of the complex chemical composition of organosilicon high-boiling residues (HBRs) is a key bottleneck restricting their resource utilization. This study proposes a method for analyzing the chemical structure of complex components in organosilicon HBRs. Taking an industrial HBR sample from an enterprise as a case study, 42 components (including 37 newly identified compounds) were successfully identified through molecular ion peak recognition, isotope peak cluster analysis, and characteristic fragment ion analysis, covering five types of skeleton structures: Si-Si, Si-Si-Si, Si-Cn, Si-CH2-Si, and Si-O-Si. The study found that the stability of Si-CH2-Si and Si-O-Si skeletons is higher than that of Si-Si skeletons, and the number of chlorine atoms can be accurately inferred from the isotope peak ratio; in addition, it reveals that the migration mechanism of methyl and chlorine originates from the electronegative induction effect of chlorine atoms. The analytical method established in this study provides molecular-level data support for the research on the formation mechanism of HBRs, the optimization of synthesis processes, and the development of catalytic conversion technologies, thereby facilitating the green and sustainable development of the organosilicon industry.

Key words: chemical analysis, molecular engineering, qualitative and quantitative analysis, gas chromatography-mass spectrometry (GC-MS), high-boiling residues (HBRs)

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