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OALib Journal期刊
ISSN: 2333-9721
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添加钒对pd/al2o3-tio2催化剂上醇醛催化氧化性能及表面特性的影响
, PP. 481-486
Keywords: v-pd/al2o3-tio2,完全催化氧化,nh3-tpd,表面酸性
Abstract:
？采用浸渍法分别制备了pd/al2o3-tio2、v/al2o3-tio2和不同钒含量的v-pd/al2o3-tio2催化剂,并对乙醇、乙醛的完全催化氧化性能进行了测试。结果表明,添加适量的钒组分(1%~3%)能够有效地提高催化剂的深度氧化活性。采用xrd、nh3-tpd、n2吸附等技术分析研究催化剂的表面特性与催化活性之间的关系,发现pd/al2o3-tio2催化剂添加适量钒组分后,调变了催化剂的表面酸性、比表面积和孔容,使得v组分和pd组分与载体之间产生较强的相互作用,双金属组分的协同效应提高了催化剂对乙醇、乙醛的深度氧化活性。
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