英语翻译2.2.Characterization of OMS-22.2.1.XRDXRD experiments we

英语翻译
2.2.Characterization of OMS-2
2.2.1.XRD
XRD experiments were done using a Scintag XDS 2000 X-ray diffractometer using a tube voltage of 45 kV and a tube current of 40 mA with Cu Kα radiation.The instrument was calibrated using α-quartz as an external standard.The sample (fresh or after reaction) was ground and placed into a sample holder for experiments.XRD patterns were taken in a continuous scan mode at a scanning speed of 5°/min 2θ.
2.2.2.IR and adsorbate IR
The IR experiments were done on a Nicolet Magna-IR System 750 FT-IR spectrometer equipped with an in situ cell for heating,adsorption,and reactions.To take IR spectra of a sample,standard procedures of single beam diffuse reflectance methods with an MCT-B detector and a KBr beamsplitter were employed.For each sample,200 scans were taken with a resolution of 4 cm−1.Powders of OMS-2,OL-1,or OMS-1 were put in a desiccator containing a saturated solution of NH4NO3 for overnight sorption of water for IR studies.To detect adsorbed species,a sample was heated in the IR cell at 250°C for 4 h while purging with air.After the heated sample was cooled to room temperature,a flow of air saturated with adsorbate (benzene and/or water) was introduced for adsorption.Nitrogen is used to remove extra adsorbate before IR spectra were taken.
2.2.3.TGA,DSC,TPD–MS,and TPSR–MS
TGA profiles of the samples were made on a Hi-Res TGA 2950 thermogravimetric analyzer (TA instruments).DSC experiments were carried out on a DSC 2900 differential scanning calorimeter (TA instruments).The samples were heated in nitrogen or oxygen from room temperature to a required temperature at a rate of 10°C and held at the final temperatures for 10 min.
In TPD–MS experiments,0.1 g of samples were placed in a U-type quartz tube which was placed in a temperature programmable furnace.The sample was purged in He to remove adsorbed air and heated at 10°C/min in He to 700°C,with the downstream gas monitored with an MKS-UTI quadrupole mass spectrometer.In temperature programmed surface reaction (TPSR) experiments,a sample (0.1 g) was heated at 250°C for 1 h and cooled to room temperature for adsorption of benzene (benzene vapor saturated at 0°C with He).Helium was then flowed through the sample to remove excess benzene (monitored by MS) before TPSR–MS studies.
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2.2.表征的业务管理系统- 2 2.2.1.X射线衍射X射线衍射实验等使用Scintag的XDS 2000 X -射线衍射仪使用Kα线辐射管电压45千伏及铜一管与目前的40毫安.该仪器是利用一个外部校准标准α-石英.该示例（新鲜或反应后）的地面和转化为实验样本置于其上.XRD分析了发生在一个连续扫描模式,在2θ/分钟的扫描速度5 °.2.2.2.红外光谱和红外光谱,红外吸附试验,做一个尼科莱麦格纳- 750红外系统红外吸附光谱仪,配备有暖气,在原位细胞,和反应.采取一海运码头- B的探测器和红外溴化钾分光镜样本,单束漫反射光谱法标准程序聘用.对于每个样品,200扫描被带到了4厘米的决议草案1.对业务管理系统- 2,其他职等- 1或业务管理系统- 1粉末放入含有的水隔夜吸附的红外研究硝酸铵饱和溶液的干燥器.为了检测吸附物种,一个样本加热250 ° C,而4小时净化空气中的IR细胞.样本加热后冷却到室温,流动的空气与吸附（饱和苯和/或水）的吸附介绍.氮是用来删除多余的吸附红外光谱前采取了.2.2.3.热分析,程序升温脱附- MS和TPSR - MS分析样品剖面的热重分析,是基于一个高分辨率热重2950热分析仪（TA仪器）.数码相机进行了实验,在DSC 2900扫描量热（差动TA仪器）.对样品进行加热,氮气或氧气从室温到所需的温度在10 ° C价位和温度为10分举行的决赛.在程序升温脱附质谱实验,0.1克样品被放置在一个石英U型管于一炉的温度可编程放置.该样本是在他消除清除吸附空气和加热10℃/ min到他在700℃与1万机,泌尿道感染四极质谱仪监测下游天然气.在程序升温表面反应（TPSR）实验,一个样本（0.1克）是在250 ° C加热1小时,冷却到室温吸附苯（苯蒸气在0 °,他ç饱和）.氦当时流经前,取出的样品TPSR - MS研究过量苯（由MS监测）.