十氢萘是一种储氢密度很高的氢能载体,通过催化脱氢反应可将储存在十氢萘中的氢气释放出来.本文考察了用于制氢的十氢萘液相脱氢反应,在Pt负载的活性炭颗粒催化剂(Pt/AC)上可获得约47%的脱氢转化率;浓度分布显示十氢萘脱氢为分别生成萘及四氢萘的平行反应.在温度290~335℃、压力0.7~1.3MPa、搅拌转速1000r/min的条件下,在间歇高压釜中考察了十氢液相催化脱氢动力学,建立了脱氢反应表观动力学模型,对十氢萘脱氢实验数据进行非线性拟合,得到十氢萘脱氢表观动力学模型参数,生成萘及四氢萘的表观活化能分别为 116.27kJ/mol、114.38kJ/mol.经统计检验,结果表明所建立的十氢萘催化脱氢表观动力学模型和参数估值是可靠的.%Decalin,a representative liquid organic hydride,is a promising candidate for hydrogen carrier. Hydrogen stored in decalin can be released through catalytic dehydrogenation. The dehydrogenation of liquid decalin for hydrogen production was investigated,and about 47% decalin conversion was achieved over a Pt catalyst supported on granular activated carbon. Production distribution showed that decalin dehydrogenation was a parallel reaction with the formation of naphthalene and tetralin respectively. The kinetic experiment was carried out in a high pressure autoclave,under the conditions of 290-335℃,0.7-1.3MPa and stirring speed of 1000 r/min. An apparent kinetic model was used for the description of reaction,and kinetic parameters were obtained by nonlinear fitting of experimental data. The acquired apparent activation energy of naphthalene and tetralin formation was 116.27kJ/mol and 114.38kJ/mol respectively. The results of statistic test showed that the rate equation was rational and reliable.
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