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首页> 外文期刊>Acta Crystallographica, Section B. Structural Science >Zeolite rho loaded with methylamines .2. Dimethylamine loadings
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Zeolite rho loaded with methylamines .2. Dimethylamine loadings

机译：装有甲基胺的rho沸石.2。二甲胺负载量

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Samples of two differently prepared zeolite rho loaded with different amounts of dimethylamine (DMA) were studied in their hydrated forms by X-ray diffraction. Both zeolites are partially dealuminated, as indicated by nonframework Al which is assumed to be Al2O3 or AlOOH. Series I was prepared from dry-calcined NH4-rho at 873 K, series II from steam-calcined NH4-rho at 773 K. The samples were loaded with different amounts of DMA. Rietveld refinements yielded the following results for series I: (1) H-3.8(H-DMA)(5)Cs0.2Al9Si39O96.Al2O3.21H(2)O, X-ray data collection at room temperature, , a = 15.0590 (2) Angstrom, R-wp = 0.089; (2) (H-DMA)(8.8)-Cs0.2Al9Si39O96.Al2O3.18H(2)O, X-ray data collection at room temperture, , a = 15.0680 (2) Angstrom, R-wp = 0.091. Series II: (3) H-0.3(H-DMA)(5)Cs0.7Al6Si42O96.2.5Al(2)O(3).24H(2)O, X-ray data collection at room temperature, , a = 15.096 (2) Angstrom, R-wp = 0.120. DMA resides on the center axis through the alpha-cage with the N atoms pointing to the single eight-ring and the two methyl groups oriented towards the center of the alpha-cage.
机译：通过X射线衍射研究了水合形式的两种不同制备的，负载有不同量的二甲胺（DMA）的沸石样品。两种沸石都被部分脱铝，如非框架Al所示，假定为Al2O3或AlOOH。 I系列是由873 K的干法煅烧NH4-rho制备的，II系列是由773 K的蒸汽煅烧的NH4-rho制备的。样品装有不同量的DMA。 Rietveld的改进针对系列I得到了以下结果：（1）H-3.8（H-DMA）（5）Cs0.2Al9Si39O96.Al2O3.21H（2）O，室温下X射线数据收集，上，a ＝ 15.0590（2）埃，R-wp ＝ 0.089; （2）（H-DMA）（8.8）-Cs0.2Al9Si39O96.Al2O3.18H（2）O，室温下X射线数据收集，，a = 15.0680（2）埃，R-wp ＝ 0.091。系列II：（3）H-0.3（H-DMA）（5）Cs0.7Al6Si42O96.2.5Al（2）O（3）.24H（2）O，室温下X射线数据收集，上，a = 15.096（2）埃，R-wp = 0.120。 DMA通过alpha笼保持在中心轴上，N个原子指向单个八环，两个甲基指向α笼的中心。

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