英语翻译2.2.4.Sorption experimentsPhysisorption experiments were done on an ASAP 2100 physisorption apparatus to obtain isotherms of N2 adsorption and BET surface areas of the samples.Sorption of water,methanol,benzene,or binary mixtures of the a

英语翻译2.2.4.Sorption experimentsPhysisorption experiments were done on an ASAP 2100 physisorption apparatus to obtain isotherms of N2 adsorption and BET surface areas of the samples.Sorption of water,methanol,benzene,or binary mixtures of the a
英语翻译
2.2.4.Sorption experiments
Physisorption experiments were done on an ASAP 2100 physisorption apparatus to obtain isotherms of N2 adsorption and BET surface areas of the samples.Sorption of water,methanol,benzene,or binary mixtures of the above-mentioned adsorbates were studied at room temperature with static weighing.Samples (ca.0.20 g,after being pressed,crushed,and sieved to 20–40 mesh) were heated at 250°C for 4 h and put in a desiccator containing a saturated solution of NH4NO3,pure ethanol,or benzene for sorption of water,ethanol,or benzene,respectively,and containing water–ethanol or water–benzene mixtures (contained in different beakers) for sorption experiments.Accurate weighing was done before and after sorption to obtain uptake data.
2.3.Catalytic evaluation
Catalysts (0.12 g) of 20–40 mesh were placed in a U-type stainless steel reactor packed with quartz wool.A thermocouple was attached to the external surface of the reactor at the catalyst bed to record reaction temperatures.After the catalyst was pretreated at 250°C in flowing air for 1 h,the temperature was lowered to 100°C and then the reaction started.Benzene vapor was introduced into the reactor by using air as carrier gas that was flowed through a benzene-containing bubbler,which was placed in an ice bath.Another flow of air was used to dilute the reactant.By adjusting the two flow rates (controlled by a flow controller),the concentration of benzene in the reactant was adjusted to be 0.6–3.5 vol%.Under our reaction conditions,both internal and external diffusional resistances have been eliminated if the reaction temperature was above 200°C,as confirmed by experiments with different amounts and different sizes of catalysts.
Analyses of benzene were done on-line with an HP 5990 A GC gas chromatograph (GC) equipped with a thermal conductivity detector (TCD),an HP 3395 integrator,and a 30 m×0.32 mm×0.25 μm HP-5 capillary column.The downstream gas was connected to another HP 5990 A GC with a TCD and a 25 ft Carboxen 1000 packed column for analyses of O2,N2,CO,and CO2.Helium was used as carrier gas for all analyses.Concentrations are determined by external standard methods.Relative errors of these GC analyses are within 5%.At each temperature or flow rate,analyses of reaction products were taken at a time-on-stream of 30 min.
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英语翻译2.2.4.Sorption experimentsPhysisorption experiments were done on an ASAP 2100 physisorption apparatus to obtain isotherms of N2 adsorption and BET surface areas of the samples.Sorption of water,methanol,benzene,or binary mixtures of the a
2.2.4.吸附实验
物理吸附试验尽快与您做了2100年物理吸附仪对N2的吸附和BET表面积的样品“获取等温线.吸附的水,甲醇,苯,或上述吸附质研究了二元混合物在室温静态称重温度.样品（约0.20克,被按下后,粉碎,过筛,并以20-40目）在250℃,加热4小时ç被放在一个载有一吸附硝酸铵,纯乙醇或苯饱和溶液干燥器水,乙醇,或苯,分别载有水或水和乙醇,苯混合物（在不同的烧杯内）的吸附实验.准确称量完成前,后吸收吸附获取数据.
2.3.
催化剂（0.12克20-40目）被安置在一个U型不锈钢石英羊毛包装反应堆.热电偶又是挂在催化剂床反应器的外表面,记录反应温度.预处理后的催化剂在250℃时为1小时在流动的空气,温度降至100 ° C,然后在反应开始.苯蒸气引入采用空气为载气流通,这是一个苯含起泡,这是放置在冰浴一年的反应堆.另一种用空气流稀释反应物.通过调整两种流率（由流量控制器控制）,对苯的反应物浓度调整为0.6-3.5％,第二卷.反应条件下澳,内部和外部的扩散电阻都取消了,如果反应温度高于200 ° C的有不同大小和不同金额的催化剂当日之实验.
苯的分析,做一个与惠普5990气相色谱气相色谱仪（GC）中有热导检测器（TCD检测装置）,集成的HP 3395上线,一个30米× 0.32毫米× 0.25微米的HP - 5毛细管柱.下游天然气连接到另外一个是惠普5990与TCD和一25英尺Carboxen 1000包装为02柱气相色谱分析,氮气,一氧化碳,二氧化碳和.采用氦载气为所有测试.水平是由外部的标准方法.争论的气相色谱分析,相对误差在5％以内.在每一个黄金温度,流速,分析反应产物在时间上的30分钟流措施.

2.2.4。吸附实验,
物理吸附试验尽快完成仪器得到2100提出静态吸附等温线N2吸附和打赌表面区域的样品。对水的吸收、甲醇、苯、二元上述adsorbates在室温下进行静重。样品(ca。0.20 g,后被压碎,石,20-40网格)被加热到250℃经4小时,包含了饱和溶液除湿、纯酒精,或者NH4NO3苯为吸附的水、乙醇、或苯、分别为water-benzene混合物(含解释或包含在不同的...

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2.2.4。吸附实验,
物理吸附试验尽快完成仪器得到2100提出静态吸附等温线N2吸附和打赌表面区域的样品。对水的吸收、甲醇、苯、二元上述adsorbates在室温下进行静重。样品(ca。0.20 g,后被压碎,石,20-40网格)被加热到250℃经4小时,包含了饱和溶液除湿、纯酒精,或者NH4NO3苯为吸附的水、乙醇、或苯、分别为water-benzene混合物(含解释或包含在不同的烧杯为)实验。吸附精确的重量是之前和之后的吸附获取数据。摄取
23。催化评价
催化剂(0.12 g)20-40网格被放在一个U-type不锈钢反应堆挤满了石英羊毛。一个热偶是连接到外部表面的床反应器催化剂反应温度记录。预处理后的催化剂在250摄氏度的流动的空气中,温度是1小时降到100°C的反应,然后开始。介绍了苯蒸汽进入反应堆通过空气作为载体,通过气体流动benzene-containing喷水,放置在一个冰浴。另一个流动的空气被用来稀释了反应物。通过调整两个流量(控制流量控制器)、浓度的苯的修正0.6-3.5反应物是卷%。我们的反应条件下,内部和外部两方面diffusional抗性已经被消灭如反应温度超过200℃,作为试验证实不同数量和尺寸的催化剂。
分析了网上与苯作了气相色谱5990惠普公司(GC)配备了热导检测器(经),惠普3395积分器,一个30米××0.25μm HP-5 0.32毫米毛细管柱。下游气体被连接到一个

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