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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Exchange of a Tetrapositive Cation into a Zeolite and a New Inorganic Scintillator. I. Crystal Structures and Scintillation Properties of Anhydrous Zr1.7Tl5.4Cl1.7-LTA and Zr2.1Tl1.6Cl3.0-LTA
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Exchange of a Tetrapositive Cation into a Zeolite and a New Inorganic Scintillator. I. Crystal Structures and Scintillation Properties of Anhydrous Zr1.7Tl5.4Cl1.7-LTA and Zr2.1Tl1.6Cl3.0-LTA

机译：将四正阳离子交换为沸石和新型无机闪烁体。 I.无水Zr1.7Tl5.4Cl1.7-LTA和Zr2.1Tl1.6Cl3.0-LTA的晶体结构和闪烁特性

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A new inorganic scintillator has been prepared by the assembly of thallium, zirconium, and chloride ions in a zeolite. Also, for the first time, a 4+ cation has been exchanged directly into a zeolite. From vertical bar Na-12(H2O)(x)vertical bar[Si12Al12O48]-A (zeolite LTA), vertical bar Zr1.7Tl5.4Cl1.7 vertical bar [Si13.5Al10.5O48]-A and vertical bar Zr2.1Tl1.6Cl3.0 vertical bar[Si17.4Al6.6O48]-A were prepared by the thallous ion exchange (TIE) method: fully dehydrated Tl-12-A was treated with ZrCl4 (g, 3.7 X 10(3) Pa) at 553 and 623 K, respectively. Their crystal structures were determined by single-crystal crystallography using synchrotron X-radiation and their compositions were partially confirmed by SEM-EDX analyses. Their structures were refined in the space group Pm (3) over barm (a = 12.215(1) and 11.945(1) angstrom) with all unique data to the final error indices R-1 = 0.047 and 0.075 for the 680 and 380 reflections for which F-o > 4 sigma(F-o), respectively. Extraframework Zr4+ and Zr2+ ions had replaced some of the Tl+ ions in Tl-12-A. Some Zr4+. ions are 4-coordinate with three bonds to framework oxygen atoms and one to a Cl- ion; others are 5-coordinate, bonding to two Cl- ions. Tetrahedral Zr2+ was found as ZrCl42- in vertical bar Zr2+ T1,.6C13.01[Si174A16.6048]-A; each of its cr ions bonds linearly to a Zr4+ ion, which in turn bonds linearly to another cr ion to form Zr5C1810 clusters centered in and extending out of the sodalite cavities. The Tr ions are in the large cavities. The X-ray induced emission spectrum of Zr,TI,C1-A has a broad band between 330 and 750 nm, peaking at 490 nm. The integrated light yield observed for Zr,T1,C1-A powder is about five times greater than that of anthracene, a well documented scintillator. This strong radioluminescence appears to be due to the simultaneous presence of Zr and T1 within the zeolite.
机译：通过将th，锆和氯离子组装在沸石中制备了一种新的无机闪烁体。同样，第一次将4+阳离子直接交换成沸石。从垂直棒Na-12（H2O）（x）垂直棒[Si12Al12O48] -A（沸石LTA），垂直棒Zr1.7Tl5.4Cl1.7垂直棒[Si13.5Al10.5O48] -A和垂直棒Zr2.1Tl1通过th离子交换（TIE）方法制备了.6Cl3.0垂直棒[Si17.4Al6.6O48] -A：在ZrCl4（g，3.7 X 10（3）Pa）下对完全脱水的Tl-12-A进行处理分别为553 K和623K。它们的晶体结构是通过使用同步加速器X射线的单晶晶体学确定的，并且其组成通过SEM-EDX分析得到了部分确认。它们的结构在空间组Pm（3）上经过barm（a = 12.215（1）和11.945（1）埃）精炼，所有唯一数据的最终误差指数R-1 = 0.047和0.075，用于680和380次反射其中Fo> 4 sigma（Fo）。框架外的Zr4 +和Zr2 +离子已经取代了Tl-12-A中的一些Tl +离子。一些Zr4 +。离子是4配位的，三个键与骨架氧原子相连，一个键与Cl-离子相连;其他的是5坐标，与两个Cl离子键合。在垂直条Zr2 + T1，.6C13.01 [Si174A16.6048] -A中发现四面体Zr2 +为ZrCl42-。它的每个cr离子均与Zr4 +离子线性键合，Zr4 +离子又与另一个cr离子线性键合，形成Zr5C1810簇，该簇以方钠石腔为中心并向外延伸。 Tr离子位于大空腔中。 Xr诱导的Zr，TI，C1-A的发射光谱在330至750 nm之间有一个宽带，在490 nm处达到峰值。对Zr，T1，C1-A粉末观察到的综合光产率比蒽（一种有据可查的闪烁体）高约5倍。这种强的辐射发光似乎是由于沸石中同时存在Zr和T1所致。

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