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在氧化铝表面,以葡萄糖为炭源,通过高温热解方法制备了覆炭氧化铝载体(CCA),利用浸渍法制备Ni-Cu/CCA催化剂,并对催化剂进行了IR、BET、TG、SEM表征。利用微型连续管式反应器与气相色谱联用装置,考察了Ni-Cu/CCA催化剂对甲基环己烷(MCH)气相脱氢的催化性能。结果表明,载体覆炭质量分数为10%,金属活性组分Ni、Cu质量比为10∶1,反应温度为650 K,甲基环己烷微量进料为0.015 m L/min,载气流速为8 m L/min,反应压力为0.4 MPa时,使用0.6 g Ni-Cu/CCA,甲基环己烷脱氢转化率达到95.27%,甲苯的选择性接近100%。
On the surface of alumina, carbonated carbonaceous support (CCA) was prepared by high temperature pyrolysis using glucose as carbon source. The Ni-Cu / CCA catalyst was prepared by impregnation method. The catalysts were characterized by IR, BET, TG and SEM Characterization. The catalytic performance of Ni-Cu / CCA catalyst for gas phase dehydrogenation of methylcyclohexane (MCH) was investigated using a microtiter-pipe reactor coupled with a gas chromatograph. The results show that the mass fraction of carbon supported on the carrier is 10%, the mass ratio of Ni to Cu is 10:1, the reaction temperature is 650 K, the feed of methyl cyclohexane is 0.015 m L / min, the carrier gas flow rate When the reaction temperature was 8 m L / min and the reaction pressure was 0.4 MPa, 0.6 g Ni-Cu / CCA was used. The dehydrogenation conversion of methylcyclohexane was 95.27% and the selectivity of toluene was nearly 100%.