A facile rout to synthesis lamellate structure mesoporous alumina using polyethylene glycol 6000 (PEG, molecular weight=6000) as structure directing agent

作者：Su Ai ping^*; Zhou Yong; Yao Yun hai; Yang Cheng min; Du Hui

来源：Microporous and Mesoporous Materials, 2012, 159: 36-41.

DOI：10.1016/j.micromeso.2012.04.002

• Mesoporous alumina
• Lamellate structure
• PEG6000 surfactant
• Morphology

In this study, Al-2(SO4)(3) and NaAlO2 were used as aluminum precursors for preparing lamellate structure mesoporous alumina with crystalline framework walls in the presence of non-ionic surfactant PEG6000. The characterization by SEM, TEM, TG-DSC and FTIR revealed that PEG surfactant induced the formation of the lamellate structure boehmite with relatively lower water content. XRD and SAED results conveyed the formation of well-crystallined mesoporous gamma-alumina after the samples were calcined at 600 degrees C for 3 h. N-2 physisorption showed that the mesoporous alumina prepared in this way displayed very rich porosities with large mesopores, and both the pore volumes and the pore sizes increased with the addition of such surfactant in the precipitation process. The obtained gamma-alumina with lamellate morphology exhibited a large surface area of 279 m(2)/g, and the powder has no obvious agglomeration. The improved textural parameters in the samples should be attributed to the formation of lamellate structure nanoparticles.

• 出版日期2012-9-1
• 单位辽宁石油化工大学