英语翻译Infrared spectroscopy:A powder of M(bdc)(ted)0.5 2 mg) w

英语翻译
Infrared spectroscopy:A powder of M(bdc)(ted)0.5 2 mg) was pressed onto a KBr pellet(~1 cm diameter,1-2 mm thick) and placed into a high pressure high temperature cell purchased from Specac (product number P/N 5850c) at the focal point of the sample compartment of the infrared spectrometer (Nicolet 6700,Thermo Scientific) equipped with a liquid N2–cooled MCT-B detector.
The cell was connected to a vacuum line for evacuation.SO2 gas was introduced into the pressure cell and all spectra were recorded in transmission between 400 and 4000 cm-1 (4 cm-1 spectral resolution).The pressure was determined by calibrating the SO2 gas IR absorption at low pressures (3 Torr) with a convection gauge (KJL 285801,KurtJLeskerCo) and then using the integrated IR absorption to determine the higher pressures since there is no dependence of the internal mode dipole moment on pressure.
Adsorption isotherm:Measurements of SO2 uptake were performed using a volumetric system specially constructed for low-pressure experiments (see Figure S12).It comprises two chambers,A and B,whose volumes have been determined using helium.Chamber B is loaded with the sample and chamber A is a gas reservoir.A known amount of powder sample was placed in chamber B (volume = 4.134 cm3) with a layer of glass wool on top to prevent sudden suction of the powder sample.

4　红外光谱:M(bdc)(ted)0.5粉末 (~ 2毫克)制成溴化钾压片(~1厘米,直径1 - 2毫米厚),置入从Specac购买的高压高温样品池中(产品编号P / N 5850 c).　红外光谱仪(Nicolet 6700, ThermoScientific)样品室的测试点配备液氮气冷却的MCT-B检测器.
样品池连接真空以便疏散.二氧化硫气体引入到压力池,光谱记录范围在400 and 4000 cm-1(分辨率为100px - 1).压力是在低压下(3Torr)用对流压力计（KJL 285801, KurtJLeskerCo)由校准SO2气体红外吸收光谱　来确定的.　由于内部模式的偶极矩与压力无相关性,更高的压力是通过积分红外吸收来确定的.
等温吸附:测量SO2进样用低压下特殊构造容量系统来进行的 (参见图S12),　由A和B两个进样室组成.其体积用氦气测定.室B加载样品,室A是气体储藏室.已知量的粉末样品被放置在室B(体积= 4.134立方厘米),上方放一层玻璃棉以防止粉末样品的倒吸.