Development and Application of High Resolution Photoionization Time-of-Flight Mass Spectrometer for Online Monitoring of Catalytic Processes

	Development and Application of High Resolution Photoionization Time-of-Flight Mass Spectrometer for Online Monitoring of Catalytic Processes
	Li Qing-Yun 1; Hua Lei 2; Jiang Ji-Chun 2,3; Hou Ke-Yong 2; Qi Ya-Chen 1; Tian Di 1; Wang Hai-Yan 4; Li Hai-Yang 1
刊名	CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
	2015-10-01
卷号	43 期号:10 页码:1531-1537
关键词	Catalytic Process Monitoring Methanol To Olefins Photoionization Source High Resolution Time-of-flight Mass Spectrometer
ISSN号	0253-3820
文献子类	Article
英文摘要	Methanol 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.
WOS关键词	SINGLE-PHOTON IONIZATION ; ENHANCED PHOTOELECTRON IONIZATION ; VACUUM-ULTRAVIOLET LAMP ; STATE NMR-SPECTROSCOPY ; ZEOLITE H-ZSM-5 ; LIGHT OLEFINS ; VUV-LAMP ; METHANOL ; CONVERSION ; HYDROCARBONS
WOS研究方向	Chemistry
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000371688100008
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/171026]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Li Qing-Yun
作者单位	1.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
推荐引用方式 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.