【摘要】：通過DOE實驗設計對沉淀鐵費托合成催化劑焙燒過程進行了優(yōu)化,并給出了焙燒過程的分子模擬與粒子長大模型。結果表明,隨著焙燒溫度的升高和焙燒時間的延長,催化劑的孔容減小,堆比及骨架密度增加,耐磨性改善。BET表面與磨耗的變化趨勢一致,即比表面積越小磨耗越小;磨耗與密度成線性反比關系,密度越高磨耗越小。通過焙燒工藝的優(yōu)化,可調變Cu、Si通過O原子與Fe原子的鍵合作用及催化劑的粒子粒徑,得到較高F-T活性且穩(wěn)定性好的沉淀鐵催化劑。在該實驗中,優(yōu)化的焙燒溫度為560℃。
[Abstract]:The calcination process of precipitated iron ferrite synthesis catalyst was optimized by DOE experimental design, and the molecular simulation and particle growth model of the calcination process were given. The results show that with the increase of calcination temperature and the prolongation of calcination time, the pore volume of the catalyst decreases, the bulk ratio and the skeleton density increase, and the surface wear resistance of the BET surface is in accordance with the change trend of wear, that is, the smaller the specific surface area is, the smaller the wear rate is. Wear is linearly inversely proportional to density, and the higher the density, the smaller the wear. By optimizing the calcination process, the precipitated iron catalyst with high F-T activity and good stability can be obtained by adjusting the Cu-Si through the bond cooperation between O atom and Fe atom and the particle size of the catalyst. In this experiment, the optimized roasting temperature is 560 鈩，

本文編號：2127627