PROMOTION OF AROMATIZATION OF PARAFFINS WITH PRESSURE SWING REACTOR

1)将ApparatusA连续流管式反应系统改造为单柱变压吸附式反应器。选取环己烷、正己烷和丙烷为起始原料。产物的分析采用两套毛细管气相色谱法进行。芳烃和石蜡产物的快速分析和各组分的精确分析，既能快速测定非稳态反应条件下的活性，又能同时对所有产物进行精确的定量分析。2)模型反应环己烷脱氢是典型的脱氢模型反应。在Pt/Al203和含镍储氢合金同时存在的情况下，转化率几乎达到100%，远远超过了平衡极限。指出PSA操作适用于提高脱氢效果。通过周期性地降低反应系统的压力来再生催化剂。3)石蜡脱氢芳构化在石蜡类化合物中，选择正己烷和丙烷作为起始原料，在Zn-ZSM5催化剂的PSA反应体系中进行了应用。含镁储氢合金在反应条件下对正己烷的脱氢反应是有效的，钛和钽对丙烷的反应也是有效的。在这两种情况下，反应都超出了表观平衡。该反应器采用吹扫气对储氢合金进行周期性再生的PSA操作。正己烷的反应结果发表在《科学学报》上。

1) ApparatusA coutinuous flow tubular reaction system was modified into a single column PSA (presure swing adosorption) type reactor. Cyclohexane, n-hexane and propane were selected as starting materials. Ananlysis of products were carried out with two sets of capillary G.C.Quick analysis of both aromatic and paraffinic products and precise analysis of each components enabled both the quick determination of activity under unsteady state reaction conditions and the precise quantitative analysis of all products at the same time.2) Model reactionAs a model reaction of typical dehydrogenation, dehydrogenation of cyclohexane was carried out. Under the presence of both Pt/Al203 and nickel containing hydrogen storage alloys, almost 100% conversion was obtained wich is far exceeded the equilibrium limitation. It is pointed out that the PSA operation is applicable to enhance the dehydrogenation. The catalyst was regenerated by reducing periodically the pressure of the reaction system.3) Dehydroaromatization of paraffinsAmong paraffinic compounds, n-hexane and propane were selected as a starting materials for the application to PSA reaction system with Zn-ZSM5 catalyst. Magnesium containing hydrogen storage alloys were effective for the reaction of n-hexane by removing hydrogen under reaction conditions Titanium and tantalum were also effective in the reaction of propane. In both cases, the reaction proceeded beyond the apparent equilibrium. PSA operation which regenerated hydrogen storage alloy periodically with purging gas was applicable for this reactor. The results of the reaction of n-hexane was published on the Sekiyu Gakkaishi.