糠醇加氢制四氢糠醇催化剂的研究

制备了负载型镍催化剂 ,并加入碱性和过渡金属氧化物助剂 ,各种氧化物总负载量低于催化剂质量的 30 %。在 393～ 413K、0 .2 5～ 0 .4h-1、2 .0～ 4.0MPa条件下 ,用上述催化剂加氢还原糠醇制备四氢糠醇。对于含少量助剂的镍催化剂Ⅱ ,在 393K、4.0MPa和空速 0 .2 5h-1时 ,糠醇转化率可达 99%以上 ,四氢糠醇收率和选择性都达到或接近 97%。在相同反应条件和糠醇转化率条件下 ,四氢糠醇收率和选择性均比没有助剂的镍催化剂Ⅰ高 2 .0 % ,比骨架镍催化剂高3.0 %

Study of the Catalysts for Hydrogenation of Furfuryl Alcohol to Tetrahydrofurfuryl Alcohol

The supported-nickel catalyst was prepared in which basic oxides and transition-metal oxides were added as promoter,and all the oxides in amount were less than 30% of the mass of catalyst.Tetrahydrofurfuryl alcohol (THFA) was prepared from furfuryl alcohol with hydrogenation reduction by using the catalyst at 393-413 K,0.25-0.4 h-1 and 2.0-4.0 MPa.It is found that conversion of furfuryl alcohol was higher than 99%,and THFA yield and selectivity achieved or were close to 97% by using catalyst Ⅱ with a small quantity of promoters.The THFA yield and selectivity were 2.0% higher than those by using catalyst Ⅰ without promoter,3.0% higher than those by using Raney nickel catalyst under the same reaction conditions and furfuryl alcohol conversion.