Pt/MIL-101(Cr)在肉桂醛选择性加氢反应中的催化性能
Pt/MIL-101(Cr) for the Selective Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol
作者单位E-mail
路宁悦 太原理工大学精细化工研究所, 太原 030024  
周帆 太原理工大学精细化工研究所, 太原 030024  
范彬彬 太原理工大学精细化工研究所, 太原 030024 fanbinbin@tyut.edu.cn 
李瑞丰 太原理工大学精细化工研究所, 太原 030024  
摘要: 采用简单易行的浸渍法将Pt纳米粒子负载到MIL-101(Cr)上,制备了Pt/MIL-101(Cr)催化剂,并对其在肉桂醛选择性加氢反应的催化性能进行了研究。XRD、N2吸附、TEM和催化性能的研究结果表明,Pt的负载量对负载于MIL-101(Cr)上Pt纳米粒子的尺寸及所制备催化剂对肉桂醇的选择性有很大影响。低Pt负载量(1.0%)的Pt/MIL-101(Cr)较其他MOFs和无机材料在肉桂醛选择性加氢反应中表现出了高的催化性能,在优化的反应条件下肉桂醛转化率和对肉桂醇的选择性可分别达96.5%和86.2%。Pt/MIL-101(Cr)催化剂具有良好的稳定性。Pt/MIL-101(Cr)所表现出的优良的催化性能同MIL-101(Cr)载体的孔道结构及其表面性质密切相关。
关键词: 非均相催化  选择性加氢  肉桂醛  MIL-101(Cr)  Pt纳米颗粒
基金项目: 国家自然科学基金(No.20971095,21576177)和山西省回国留学人员科研资助项目(No.2013-047)资助。
Abstract: MIL-101(Cr) supported Pt nanoparticles (Pt/MIL-101(Cr)) catalyst was prepared by a facile impregna-tion method and used as an efficient catalyst for selective hydrogenation of cinnamaldehyde (CAL). The results of XRD, TEM and N2 adsorption and catalytic evaluation showed that Pt loadings greatly influenced the size of the supported nanoparticles on MIL-101(Cr) and the selectivity to cinnamyl alcohol (COL). Pt/MIL-101(Cr) catalyst with a low Pt loading (1.0%) exhibited much higher catalytic activity and COL selectivity in the selective hydrogenation of CAL as compared with Pt nanoparticles supported on other MOFs or inorganic supports, and its activity and selectivity to COL can reach 96.5% and 86.2% under optimized reaction conditions, respectively. The prepared Pt/MIL-101(Cr) catalyst is stable and can be reused at least five times without significant loss in the activity and selectivity. The excellent catalytic performance of Pt/MIL-101(Cr) is greatly related with the unique structure and surface property of MIL-101(Cr) support.
Keywords: heterogeneous catalysis  selective hydrogenation  cinnamaldehyde  MIL-101(Cr)  Pt nanoparticles
投稿时间:2015-06-11 修订日期:2015-10-20
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路宁悦,周帆,范彬彬,李瑞丰.Pt/MIL-101(Cr)在肉桂醛选择性加氢反应中的催化性能[J].无机化学学报,2015,31(12):2324-2330.
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