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Development and Application of High Resolution Photoionization Time-of-Flight Mass Spectrometer for Online Monitoring of Catalytic Processes
Li Qing-Yun1; Hua Lei2; Jiang Ji-Chun2,3; Hou Ke-Yong2; Qi Ya-Chen1; Tian Di1; Wang Hai-Yan4; Li Hai-Yang1
KeywordCatalytic Process Monitoring Methanol To Olefins Photoionization Source High Resolution Time-of-flight Mass Spectrometer
Source PublicationCHINESE JOURNAL OF ANALYTICAL CHEMISTRY
2015-10-01
ISSN0253-3820
Volume43Issue:10Pages:1531-1537
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Analytical
WOS Research AreaChemistry
WOS KeywordSINGLE-PHOTON IONIZATION ; ENHANCED PHOTOELECTRON IONIZATION ; VACUUM-ULTRAVIOLET LAMP ; STATE NMR-SPECTROSCOPY ; ZEOLITE H-ZSM-5 ; LIGHT OLEFINS ; VUV-LAMP ; METHANOL ; CONVERSION ; HYDROCARBONS
AbstractMethanol to olefins (MTO) technology is developed to produce fundamental organic chemical raw materials, the low carbon olefins, from coal and nature gas, which are firstly converted to methanol. MTO has become the key technique in coal to olefins route, and thus it is of great economic value and strategic significance. However, it is a great challenge for traditional analytical methods to real time and online analyze the catalytic products during MTO catalytic reaction process, which makes it difficult to optimize the catalytic reaction condition and explore the reaction mechanism. In this paper, in order to realize on. line monitoring of MTO catalytic reaction process, a home. made high resolution photoionization time. of. flight mass spectrometer (TOFMS) based on a vacuum ultraviolet (VUV) lamp was developed, using single photon ionization as the soft ionization source. The field. free region was 348. 5 mm, and the overall size of the TOFMS was 750 mm. 460 mm. 413 mm. As a result, a mass resolution of 3960 was achieved at m/z 28, and the mass peaks of N-2 and C2H4 were baseline separated, which avoided the interference of the carrier gas N-2 to the identification of the product C2H4 during MTO catalytic process. Under the condition of ionization region pressure 7 Pa, the limits of detection down to 0.51, 0.052, and 0.042 mL/m(3) were obtained for ethylene, propylene and butylene within 5 s, respectively. The instrument was successfully applied to the real. time, fast, and on. line analysis of gas phase products during MTO catalytic process. The results indicated that this instrument had potential application value and broad application prospects in industrial process monitoring.
Language英语
WOS IDWOS:000371688100008
PublisherELSEVIER SCIENCE INC
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/171027
Collection中国科学院大连化学物理研究所
Corresponding AuthorLi Qing-Yun
Affiliation1.Jilin Univ, Coll Instrumentat & Elect Engn, Changchun 130023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Jiangsu Prov Inst Qual & Safety Engn, Nanjing 210046, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Li Qing-Yun,Hua Lei,Jiang Ji-Chun,et al. Development and Application of High Resolution Photoionization Time-of-Flight Mass Spectrometer for Online Monitoring of Catalytic Processes[J]. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,2015,43(10):1531-1537.
APA Li Qing-Yun.,Hua Lei.,Jiang Ji-Chun.,Hou Ke-Yong.,Qi Ya-Chen.,...&Li Hai-Yang.(2015).Development and Application of High Resolution Photoionization Time-of-Flight Mass Spectrometer for Online Monitoring of Catalytic Processes.CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,43(10),1531-1537.
MLA Li Qing-Yun,et al."Development and Application of High Resolution Photoionization Time-of-Flight Mass Spectrometer for Online Monitoring of Catalytic Processes".CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 43.10(2015):1531-1537.
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