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中文摘要：
采用浸渍法制备Rh/CeO2催化剂。通过粉末X线衍射仪（XRD）、N2吸附-脱附分析、扫描电子显微镜（SEM）和透射电子显微镜（TEM）等对催化剂的性能进行表征。以苯甲醛和乙酸铵的还原胺化反应为模板反应,考察Rh/CeO2催化剂的催化性能。结果表明：Rh/CeO2催化剂具有多孔结构,且其在醛的还原胺化反应中表现出较高的活性和选择性。在反应温度为50℃、H2压力为0.1 MPa、乙醇作溶剂、n（乙酸铵）∶n（苯甲醛）∶n（Rh/CeO2）=50∶10∶0.1时,苯甲醛的转化率为100%,苄胺的产率为88%。催化剂重复使用5次后,依旧可以保持较高的催化活性。在优化条件下,系列苯甲醛均可选择性地还原胺化得到相应一级胺。
英文摘要：
The rhodium catalyst Rh /CeO2 was prepared by incipient wetness impregnation method. The sample was characterized by X-ray powder diffraction（ XRD）,N2adsorption-desorption analysis,scanning electron microscope（ SEM）,and transmission electron microscope（ TEM）. The Rh /CeO2 catalysed reductive amination of benzaldehyde with ammonium acetate was investigatied as a model reaction. Results showed that Rh /CeO2 had a porous structure and was highly active for the reductive amination of benzaldehyde. The conversion of benzaldehyde and the yield to benzylamine were 100% and 88% under the optimized operation conditions at 50 ℃,in ethanol,at 0. 1 MPa H2,with the ratio of starting substances as n（ NH4OAC） ∶ n（ benzaldehyde） ∶ n（ Rh /CeO2） =50∶ 10∶ 0. 1. The Rh/CeO2 catalyst was reusable and active after 5 times recycles. Several aldehydes were used for the reductive amination,and most of the primary amines were obtained in high yields.
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