| Title: | A ship-lock-type reactor for ion-molecule reactions of mass-selected ions under high-pressure conditions |
| Author(s): | Wei GP; Liu QY; Ren Y; He SG; |
| Address: | "State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China" |
| ISSN/ISBN: | 1089-7623 (Electronic) 0034-6748 (Linking) |
| Abstract: | "A ship-lock-type reactor has been developed to study ion-molecule reactions of mass-selected ions under high-pressure conditions. Neutral gas molecules can be confined in the reactor by controlling two electromagnet valves to close both the inlet and the outlet of the reactor. Gas-phase ions can be trapped in an ion funnel trap installed in the reactor and interacted with a high-pressure (up to 1000 Pa) reactant gas for a period of time (up to 1 s). The reactions of mass-selected V(2)O(6) (-) with CH(4) and n-C(4)H(10) and mass-selected Au(+) with n-C(7)H(16) were investigated to evaluate the performance of the reactor. The hydrogen atom abstraction product V(2)O(6)H(-) was observed for the reaction of V(2)O(6) (-) with CH(4), the rate constant was measured to be (1.9 +/- 0.4) x 10(-16) cm(3) molecule(-1) s(-1), and the kinetic isotope effect value was determined to be 5.4 +/- 1.1. Furthermore, the detection limit of n-C(7)H(16) with 1-min measurements was determined to be (19 +/- 2) pptv, which is significantly lower than those in previous studies. These results indicate that the current apparatus is a prospective for the study of slow ion-molecule reactions and the detection of trace amounts of gas species, such as volatile organic compounds" |
| Notes: | "PubMed-not-MEDLINEWei, Gong-Ping Liu, Qing-Yu Ren, Yi He, Sheng-Gui eng 2021/11/01 Rev Sci Instrum. 2021 Oct 1; 92(10):104104. doi: 10.1063/5.0059570" |
