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研制应用于正戊烷异构化的非贵金属催化剂Mo-Ni0/HM。以丝光沸石作载体,经两次2mol/L的NH4NO3铵交换,一次质量分数为0.36的乙酸交换;用常规方法在室温下先后浸渍活性组分Mo,助催化剂组分Ni,w(Mo)与w(Ni)的最佳配比为3.2%:1.0%,焙烧温度为475℃。在临氢高压微反-色谱联合装置上对该催化剂进行考察,工艺条件为:反应温度340℃,压力3.0MPa,空速1.0h-1,氢油摩尔比4:1。结果为:异戊烷收率达到55.2%,≥C5液体收率为95.2%。研究表明,此催化剂具有活性高,选择性好,成本低等特点,异构化性能优于只用两次铵交换、不同焙烧温度的其它催化剂。
Development of non-precious metal catalyst Mo-Ni0 / HM for n-pentane isomerization. Mordenite was used as carrier, exchanged twice with 2mol / L NH4NO3, and the first mass fraction of acetic acid was 0.36. Mo was impregnated with the active component Mo and the promoter component Ni, w (Mo ) And w (Ni) best ratio of 3.2%: 1.0%, calcination temperature of 475 ℃. The catalyst was investigated on a hydrogen high pressure micro-reversed-phase chromatography combined device. The reaction conditions were as follows: reaction temperature 340 ℃, pressure 3.0 MPa, space velocity 1.0 h-1, molar ratio of hydrogen to oil 4: 1. The results are as follows: the yield of isopentane reaches 55.2% and the liquid yield of ≥C5 is 95.2%. The results show that the catalyst has the characteristics of high activity, good selectivity and low cost. The isomerization performance is better than other catalysts which use only two ammonium exchanges and different calcination temperatures.