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摘要翻译 就几句话 化工吸附剂类的文章
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Fixed-bed adsorption using different π-complexation adsorbents for desulfurization of liquid fuels was investigated. Cu(I)-Y (autoreduced Cu(II)-Y), Ag-Y, H-Y, and Na-Y zeolites were used to separate low-concentration thiophene from mixtures including benzene and/or n-octane, all at room temperature and atmospheric pressure. Sulfur-free (i.e., below the detection limit of 4 ppmw sulfur) fuels were obtained with Cu(I)-Y, Ag-Y, and H-Y but not Na-Y. Breakthrough and saturation adsorption capacities obtained for an influent concentration of 760 ppmw sulfur (or 2000 ppmw thiophene) in n-octane follow the order Cu(I)-Y > Ag-Y > H-Y > Na-Y and Cu(I)-Y > H-Y > Na-Y > Ag-Y, respectively. Cu(I)-Y zeolite adsorbed 5.50 and 7.54 wt % sulfur at breakthrough and saturation, respectively, for an influent concentration of 760 ppmw sulfur in n-octane. For the case of 190 ppmw sulfur in mixtures containing both benzene and n-octane, Cu(I)-Y adsorbed 0.70 and 1.40 wt % sulfur at breakthrough and saturation, respectively. Regeneration of the adsorbent was accomplished by using air at 350 °C, followed by reactivation in helium at 450 °C. The observed adsorption behavior, in general, agrees well with previous studies performed for pure-component vapor-phase adsorption of thiophene and benzene with the same adsorbents. |
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jiangguofeng
金虫 (著名写手)
- 翻译EPI: 248
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- 注册: 2005-06-04
- 专业: 合成药物化学
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小小起: 金币+3, ★★★很有帮助 2015-05-03 10:56:50
小小起: 金币+3, ★★★很有帮助 2015-05-03 10:56:50
| 对使用不同π-络合吸附剂用于液体燃料脱硫的固定床吸附作用进行了调查。Cu(I)-Y（自还原Cu(II)-Y), Ag-Y, H-Y, Na-Y型分子筛用于从包含苯及/或正辛烷的混合物中分离低浓度噻吩，全部都在室温下和常压下。由Cu (I)-Y、Ag-Y和H-Y而不是Na-Y得到不含硫的（即,低于4 ppmw硫的检测极限）燃料。分别按照Cu(I)-Y > Ag-Y > H-Y > Na-Y和Cu(I)Y > H-Y > Na-Y > Ag-Y的顺序，得到了于正辛烷中进水760 ppmw硫(或2000 ppmw噻吩)浓度的穿透吸附容量和饱和吸附容量。 正辛烷中进水硫浓度760ppmw，Cu(I)-Y型分子筛于穿透点和饱和点分别吸附5.50和7.54wt%硫。 在既含有苯又含有正辛烷的混合物中190 ppmw硫的情况下，Cu(I)-Y于穿透点和饱和点吸附的硫分别为0.70和1.40wt%。吸附剂的再生通过于350°C利用空气，随后于450°C于氦中进行再活化而完成的。在一般情况下吸附行为的观测结果与以前用同样的吸附剂对于纯组分汽相噻吩和苯的吸附进行的研究结果相吻合。 |
2楼2015-04-24 13:07:51
