DICP OpenIR
Single photon ionization time-of-flight mass spectrometry with a windowless RF-discharge lamp for high temporal resolution monitoring of the initial stage of methanol-to-olefins reaction
Li, QingYun1; Hua, Lei2; Xie, Yuanyuan2; Jiang, Jichun2; Li, Hanwei1; Hou, Keyong2; Tian, Di1; Li, HaiYang2
Corresponding AuthorTian, Di(tiandi@jlu.edu.cn) ; Li, HaiYang(hli@dicp.ac.cn)
Source PublicationANALYST
2019-02-21
ISSN0003-2654
DOI10.1039/c8an01840e
Volume144Issue:4Pages:1104-1109
Funding ProjectNational Natural Science Foundation of China[21675155] ; National Natural Science Foundation of China[21605142]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS SubjectChemistry, Analytical
WOS Research AreaChemistry
WOS KeywordONLINE GAS-ANALYSIS ; VUV-LAMP ; CONVERSION ; LIGHT ; PHOTOIONIZATION ; HYDROCARBONS ; MECHANISM ; AMMONIA ; TOFMS ; WATER
AbstractMethanol-to-olefins (MTO) is a very important industrial catalysis technique for the production of light olefins, which is of great economic value and strategic significance. However, it is a great challenge for the traditional analytical methods to obtain the real-time information of product variation during MTO reaction process, which is vital for the conversion process research and mechanism explanation. In this study, a single photon ionization time-of-flight mass spectrometry (SPI-TOFMS) based on a windowless RF-discharge (WLRF) lamp was developed for real-time measurement of catalytic product during the initial stage of MTO reaction. The vacuum ultraviolet (VUV) photon energy was easily adjusted by changing the discharge gas. Argon (Ar) gas was eventually adopted as the discharge gas, since it produces photons with appropriate energy of 11.6 eV and 11.8 eV for ionization of light olefin molecules. The detection sensitivities of ethylene and propylene were largely improved to a substantially similar level with limits of detection (LODs) down to 16.98 and 9.64 ppbv, respectively. The initial stage of MTO reaction was real-time monitored with a high temporal resolution of 0.5 s, revealing that ethylene was the first olefin product followed by propylene. The successful application of WLRF-SPI-TOFMS in the monitoring of MTO catalytic process indicated broad application prospects of this instrument in the industrial reaction process monitoring.
Language英语
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS IDWOS:000459637300042
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/165949
Collection中国科学院大连化学物理研究所
Corresponding AuthorTian, Di; Li, HaiYang
Affiliation1.Jilin Univ, Coll Instrumentat & Elect Engn, Changchun 130061, Jilin, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Li, QingYun,Hua, Lei,Xie, Yuanyuan,et al. Single photon ionization time-of-flight mass spectrometry with a windowless RF-discharge lamp for high temporal resolution monitoring of the initial stage of methanol-to-olefins reaction[J]. ANALYST,2019,144(4):1104-1109.
APA Li, QingYun.,Hua, Lei.,Xie, Yuanyuan.,Jiang, Jichun.,Li, Hanwei.,...&Li, HaiYang.(2019).Single photon ionization time-of-flight mass spectrometry with a windowless RF-discharge lamp for high temporal resolution monitoring of the initial stage of methanol-to-olefins reaction.ANALYST,144(4),1104-1109.
MLA Li, QingYun,et al."Single photon ionization time-of-flight mass spectrometry with a windowless RF-discharge lamp for high temporal resolution monitoring of the initial stage of methanol-to-olefins reaction".ANALYST 144.4(2019):1104-1109.
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