Pt-Sn催化剂上异丁烷催化脱氢反应宏观动力学模型

在温度555～619℃、压力101.32～202.64 kPa、原料气空速2000～5000h~(-1)条件下,采用Pt-Sn催化剂,在积分固定床反应器中进行了异丁烷催化脱氧实验,建立了包括脱氢和裂解两个反应的异丁烷催化脱氢反应宏观动力学模型。根据实验数据,采用多元线性回归分析得到宏观动力学模型的参数,异丁烷脱氢反应的活化能约为166.78 kJ/mol,异丁烷裂解反应的活化能约为87.56 kJ/mol。统计检验结果表明,所建立的异丁烷催化脱氧反应宏观动力学模型准确可靠。

Macrokinetics of Catalytic Dehydrogenation of Isobutane on Platinum-Stannum Catalyst

The catalytic dehydrogenation of isobutane to isobutene on platinum-stannum catalyst was carried out in an integral fixed-bed reactor under the reaction conditions of temperature 555-619℃, pressure 101.32-202.64 kPa and space velocity 2000-5000h~(-1).The macrokinetics models of both the catalytic dehydrogenation and the cracking of isobutane were obtained.By means of the multiple linear regression analysis,the parameters of the macrokinetics models were worked out.Activation energies of the dehydrogenation and the cracking are about 166.78 kJ/mol and about 87.56 kJ/mol, respectively.The statistical test of the macrokinetics models showed that the rate equations were rational and reliable.