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TG-FTIR, Py-two-dimensional GC-MS with heart-cutting and LC-MS/MS to reveal hydrocyanic acid formation mechanisms during glycine pyrolysis
Hao, Jufang1,2; Guo, Jizhao2; Ding, Li2; Xie, Fuwei2; Xia, Qiaoling2; Xie, Jianping2
KeywordGlycine Pyrolysis Hydrocyanic Acid Formation Mechanism
Source PublicationJOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
2014
DOI10.1007/s10973-013-3214-0
Volume115Issue:1Pages:667-673
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Analytical ; Chemistry, Physical
WOS Research AreaChemistry
WOS KeywordALPHA-AMINO-ACIDS ; MASS-SPECTROMETRY ; THERMAL-DECOMPOSITION ; SOLID-STATE ; PRODUCTS ; LEUCINE
AbstractTo elucidate the formation process of HCN from the pyrolysis of glycine, the small molecule gaseous pyrolysates, H2O, NH3, CO2, CO, HNCO, and HCN, were analyzed in real-time by TG-FTIR. The appearance of the volatile pyrolysis products and the solid residue was determined in real-time at their corresponding formation temperatures by online Py-two-dimensional GC-MS with heart-cutting and LC-MS/MS. The pyrolysis of 2,5-diketopiperazine, a thermolytic by-product of glycine pyrolysis, was also studied. The results showed that: (1) the pyrolysis of glycine can be divided into three temperature ranges 200-300, 300-440, and 440-900 A degrees C; HCN forms in each range with three peaks appearing at 273, 422, and 763 A degrees C, respectively. (2) The mechanistic pathways of HCN formation from glycine in the low- and high-temperature heating stages are different. Below 273 A degrees C, glycine undergoes a decarboxylation reaction to produce methylamine, which subsequently forms HCN by means of dehydrogenation. Above 300 A degrees C, glycine gives relatively large amounts of HCN via 2,5-diketopiperazine and subsequent HNCO or methylenimine formation.
Language英语
WOS IDWOS:000329621100081
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/145817
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.CNTC, Zhengzhou Tobacco Res Inst, Zhengzhou 450001, Henan, Peoples R China
Recommended Citation
GB/T 7714
Hao, Jufang,Guo, Jizhao,Ding, Li,et al. TG-FTIR, Py-two-dimensional GC-MS with heart-cutting and LC-MS/MS to reveal hydrocyanic acid formation mechanisms during glycine pyrolysis[J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,2014,115(1):667-673.
APA Hao, Jufang,Guo, Jizhao,Ding, Li,Xie, Fuwei,Xia, Qiaoling,&Xie, Jianping.(2014).TG-FTIR, Py-two-dimensional GC-MS with heart-cutting and LC-MS/MS to reveal hydrocyanic acid formation mechanisms during glycine pyrolysis.JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,115(1),667-673.
MLA Hao, Jufang,et al."TG-FTIR, Py-two-dimensional GC-MS with heart-cutting and LC-MS/MS to reveal hydrocyanic acid formation mechanisms during glycine pyrolysis".JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 115.1(2014):667-673.
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