介孔材料
材料科学
纹理(宇宙学)
化学工程
计算机科学
催化作用
化学
人工智能
有机化学
工程类
图像(数学)
作者
Kui Zhang,Changming Liu,Jian Yu,Shiqiu Gao,Guangwen Xu
标识
DOI:10.1016/j.cjche.2016.07.007
摘要
Abstract By varying concentration of PEG1000 as a structure-directing agent, mesoporous alumina with excellent textural properties was synthesized. The prepared mesoporous alumina displays high thermal stability, as shown by its textural properties at different calcination temperatures of 600–850 °C. Characterization by SEM and TEM revealed that the added PEG surfactant induced the formation of petal-like alumina. XRD results clarified that all samples were amorphous and their peaks were around the peaks of γ-alumina. N 2 adsorption–desorption analysis showed that the prepared mesoporous alumina, if with PEG1000 in hydrolysis of aluminum isopropoxide, had excellent textural properties with large specific surface area, high pore volume and suitable pore size. The petal-like structure existing in the alumina samples improved their textural parameters, and the role and influential mechanism of PEG1000 were analyzed.
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