摘要
本文研究了Mo2N和Mo2N/Al2O3上肉桂醛选择加氢反应特性,并与Co/Al2O3进行了比较.结果表明,影响肉桂醛加氢的主要因素是肉桂醛在催化剂上的吸附和反应物的使用时间.使用新鲜原料时,Mo2N/Al2O3与Co/Al2O3上肉桂醛选择加氢反应性能相当,具有很高的C=O键加氢选择性.423K时,在反应原料使用较长时间后,由于吸收空气中的氧,反应过程中使Mo2N催化剂表面氧化而使其丧失C=O键选择加氢能力.
In this paper, the selective hydrogenation of cinnamaldehyde on Mo2N and Mo2N/Al2O3 compared with Co/Al2O3 is studied. The results show that the main effective factors on catalytic reaction are absorption of cinnamaldehyde on catalyst and the time for reactant exposed into air. When the reactants are fresh, Mo2N/Al2O3 is as good as Co/Al2O3 for selective hydrogenation of C = O bond in cinnamaldehyde with very high selectivity. If the reactant is exposed into air for a longer time, cinnamaldehyde will absorb oxygen to oxide Mo2N and make Mo2N and Mo2N/Al2O3 be no longer selective for hydrogenation of C = O bond at 423K.
出处
《大连大学学报》
2003年第2期59-62,共4页
Journal of Dalian University
基金
国家重点基础研究发展规划项目(G20008003)
