控制戊二醛(GA)含量制备一系列不同交联度的负载Pt的壳聚糖(CS)催化膜,并探讨其对肉桂醛选择性加氢制备肉桂醇的催化效果。Pt纳米簇用微波法制备,用透射电子显微镜(TEM)测得其平均粒径为3.6 nm。用气相色谱–质谱联用、X射线衍射仪、紫外分光光度计对所得产物进行表征,X射线光电子能谱(XPS)测定结果显示Pt与CS膜之间存在配位作用。实验结果表明,随着交联度的增加,肉桂醇的催化选择性呈现先增后减的趋势,其中交联度为57.32%时肉桂醇选择性为84.27%。 A series of Pt-loaded chitosan (CS) catalytic membranes with different degree of crosslinking were prepared by controlling the content of glutaraldehyde (GA), and the catalytic effect of selective hydrogenation of cinnamaldehyde on cinnamyl alcohol was investigated. Pt nanoclusters were prepared by microwave method and the average particle size was 3.6 nm as measured by transmission electron microscopy (TEM). The obtained product was characterized by gas chromatography-mass spectrometry, X-ray diffractometer and UV spectrophotometer. The results of X-ray photoelectron spectroscopy (XPS) showed that there was coordination between Pt and CS membrane. The experimental results showed that the catalytic selectivity of cinnamyl alcohol increased first and then decreased with the increase of the degree of crosslinking. The selectivity of cinnamyl alcohol was 84.27% when the degree of crosslinking was 57.32%.