【摘要】 本文通过淬冷法制备了催化剂前驱体NiFeCrAl合金粉末,活化后得到铁、铬改性的骨架镍催化剂,并将其用于液相催化硝基T酸加氢还原制备T酸的反应。该催化剂具有很高的催化活性,在c(NitroT-Acid)=0.73mol/L、V(H2O)=40mL、m(cat.)=0.5g、θ=90℃、p=3.0MPa的条件下,反应99分钟,硝基T酸的转化率和T酸的选择性均达100%,平均吸氢速率达1.73mmolH2/min.g,高于市售的骨架镍、钼改性骨架镍和实验室自制的钼改性骨架镍催化剂。对催化剂进行了寿命实验考察,每克催化剂可转化626g原料,催化剂具有良好的稳定性。更多还原

【Abstract】 In this paper,the precursor NiFeCrAl alloy powder was prepared by rapid quenching technique and skeletal Ni modified by Fe and Cr was obtained from the precursor by activation.The catalyst was used for liquid phase hydrogenation of nitro T-acid to T-acid.The catalyst showed high activity.Under the conditions:C(nitro T-acid)=0.73mol/L,V(H2O)=40mL,m(cat.)=0.5g,θ=90℃,p=3.0Mpa,time=99min,both the conversion of nitro T acid and the selectivity of T acid were 100%,and the average hydrogen adsorption rate was 1.73mmol H2/min·g,which is higher than commercial skeletal Ni,Mo modified skeletal Ni and self made Mo modified skeletal Ni.The durability of the catalyst was investigated.The catalyst exhibited excellent stability and per gram catalyst can convert 626g nitro T-acid.更多还原