交了66900可以得到1040传销万说是国家在操作为什么乳山明间传销这么乱。

来源：蜘蛛抓取(WebSpider) 时间：2017-03-10 21:47 标签： 合肥1040传销最新消息
我朋友在山东乳山交69800元说能挣1040万，请问是传销吗 - 110网免费法律咨询
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我朋友在山东乳山交69800元说能挣1040万，请问是传销吗
上海&05-26 21:38&&悬赏 0&&发布者:ask201…… & 回答:(1)
我朋友在山东乳山交69800元说能挣1040万，请问是传销吗
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, 31 January 2010, Pages 66–70
Dehydrogenation of n-butane over Pd&Ga/Al2O3 catalysts, , , , , , ,
Instituto de Superficies y Cat&lisis, Facultad de Ingenier&a, Universidad del Zulia, Maracaibo 4003A, VenezuelaDehydrogenation of n-butane over alumina-supported Pd and Pd&Ga catalysts was studied. Catalysts were prepared by incipient wetness impregnation with a Pd content of 0.66 wt% and atomic Ga/Pd ratios from 0 to &, using aqueous solutions of PdCl2 and Ga(NO3)3. Fresh (uncalcined) and calcined catalysts were characterized by X-ray fluorescence spectroscopy (XRF), N2 adsorption, temperature programmed reduction (TPR), CO and H2 chemisorptions and O2/H2 titrations. n-Butane dehydrogenation reaction was carried out at 500 &C, atmospheric pressure and a H2/C4H10 ratio of 10. An increase in the Pd dispersion with increasing Ga content was observed for the fresh catalysts, according to CO chemisorption results. H2 chemisorption and H2/O2 titrations were not reliable methods to determine the Pd dispersion in the fresh catalysts. For the calcined catalysts with low Ga contents, the CO/Pd, H/Pd and O/Pd values were very similar, but different for those with the higher Ga contents. These differences were explained based on the presence of chlorine. Coke deposition produced the deactivation of the catalysts and inhibited hydrogenolysis reactions on Pd, favoring the dehydrogenation selectivity. In the fresh catalysts, the Ga addition caused an effect similar to that produced by coke, reducing the activity and increasing the dehydrogenation selectivity. In the calcined catalysts, the effect of Ga addition on activity was diminished by the calcination treatment. The combination of calcination and high Ga content led to a catalyst with enhanced activity and very high dehydrogenation selectivity.Dehydrogenation of n-butane over alumina-supported Pd&Ga catalysts was studied. In the reduced catalysts (without a previous calcination), the Ga addition caused an effect similar to that produced by coke, that is, it reduced the activity and increased the dehydrogenation selectivity. The effect of Ga addition on catalytic activity was partially inhibited by the calcination treatment. At higher Ga contents, the calcination led to catalysts with enhanced activities and very high dehydrogenation selectivities.KeywordsPd&Ga/Al2O3 catalysts; n-C4H10 dehydrogenation; TPR; CO chemisorption; O2/H2 titration
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