铜钴催化剂上碳链增长基元反应动力学的研究

KINETICS IN CARBON CHAIN GROWTH ELEMENTARY REACTION ON Cu-Co CATALYST

在压力为 3.5MPa、空速为 4 0 0 7h- 1的条件下 ,对铜钴催化剂上低碳醇合成的碳链增长基元反应动力学进行了深入的研究 ,根据Anderson -Sclmlz-Flory(ASF)分布 ,求得了铜钴催化剂上 (Cu/Co=0 .35 8)低碳醇合成中每个反应温度下的碳链增长因子α ;应用杨雁南等人创立的“碳链增长基元步骤动力学”模型 ,求得了在反应温度 (5 5 3～ 6 0 3K)与 (6 13～ 6 43K)之间的链增长与链终止基元步骤活化能的相对大小 [Ep-Et=- 34.2 5kJ/mol,(5 5 3～ 6 0 3K) ;Ep-Et=- 74 .33kJ/mol,(6 13～ 6 43K) ],并将其与前人的一些理论计算结果进行了比较 ,取得了满意的结果。

The carbon chain growth elementary reaction kinetics of higher alcohol synthesis (HAS) on copper-cobalt catalyst have been studied in this paper.According to the theory of Anderson-Schulz-Flory (ASF),the carbon chain growth factor α at different temperature is obtained at the pressure of 35atm and on the condition of sv=4007 h -1 in HAS on the copper-cobalt catalyst (Cu/Co=0.358).By using the model of elementary reaction kinetics behavior proposed by Dr.Yang,the relative value of the barriers of carbon chain growth and termination from 553K to 603K and from 613K to 643K were obtained ｛E p-E t=34.25 kJ/mol,(553-603K);E p-E t=74.33 kJ/mol,(613-643K)｝.Compared with the values in theories,the results are satisfactory.