高校化学工程学报2017，Vol.31Issue(1)：51-57,7.DOI:10.3969/j.issn.1003-9015.2017.00.002
不同形貌ZnO与Cu的相互作用及对醋酸异丙酯加氢性能的影响
Synergy between Different Morphology ZnO/Cu and their Effects on Isopropyl Acetate Hydrogenation
摘要
Abstract
Plate and rod-like hexagonal ZnO crystals were synthesized via a facile solution by adjusting precursor concentration. Crystal structure, growth habit and synergy between Cu and different morphology ZnO were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectra and H2 temperature-programmed reduction (H2-TPR). The results show that ZnO crystals are elongated along the length axis and the plane diameter is reduced with the decrease of precursor concentration, which leads to morphology evolution from hexagonal plate to prismatic rod. The resulted ZnO crystals were used as a co-catalyst of copper for isopropyl acetate hydrogenation to prepare ethanol and isopropanol. The results indicate that ZnO morphology have a significant impact on isopropyl acetate hydrogenation. The Plate-like Cu/ZnO-a catalyst has the highest isopropyl acetate conversion rate and selectivity. A linear relationship between the percentage of polar plane surface area and conversion rate is identified. The isopropyl acetate conversion rate increases with the increase of polar surface percentage, which is because higher polar surface ratio of ZnO can lead to stronger interaction between ZnO and Cu. Moreover, the active component (copper) is better dispersed and easier to be reduced, which results in better catalytichydrogenation performance.关键词
ZnO形貌/极性面/醋酸异丙酯/加氢/乙醇/异丙醇Key words
ZnO morphology/polar planes/isopropyl acetate/hydrogenation/ethanol/isopropanol分类
化学化工引用本文复制引用
王森,崔咪芬,费兆阳,陈献,汤吉海,乔旭..不同形貌ZnO与Cu的相互作用及对醋酸异丙酯加氢性能的影响[J].高校化学工程学报,2017,31(1):51-57,7.基金项目
江苏高校优势学科建设工程资助项目(PADD). （PADD）
