摘要
采用铝阳极氧化法和浸渍法制备出新型SO42-/Al2O3-Al固体酸催化剂,通过BET,XRD,XPS等物性表征,考察了阳极氧化时间、焙烧温度等对催化剂制备的影响。BET结果表明,催化剂的比表面积要小于载体Al2O3的比表面积;XRD结果表明,载体Al2O3为无定形结构,且负载SO42-后,催化剂的物相结构没有发生改变;XPS结果表明,催化剂表面主要由SO42-和Al2O3组成。活性评价表明,该催化剂对酯化反应具有较好的催化活性。
A new solid acid catalyst was prepared by supporting SO4^2- onto a thin alumina film that had been formed by anodic oxidation of high-purity aluminium foils. The characters of the prepared catalyst were figured out in the term of BET, X Ray Diffraction （XRD） and X Photoelectron Spectra （XPS）. The result showed that specific surface area of the catalyst was much smaller than that of the oxide which had not undergone the sulfate treatment. X Ray Diffraction （XRD） demonstrated the supporter Al2O3 layer was in amorphous configuration and the structure of the cataiyst was not changed after loading SO4^2-. X-ray Photoelectron Spectroscopy （XPS） showed the catalyst surface is composed of SO4^2- and Al2O3. The catalyst also showed higher activity for esterification.
出处
《长春工业大学学报》
CAS
2006年第4期279-282,共4页
Journal of Changchun University of Technology
基金
吉林省科技厅科学基金资助项目(19990557)
