介孔氧化铝材料自合成以来,因其在催化、吸附等领域的广泛应用受到了极大的关注.随着石油化工领域大分子反应不断增加,介孔氧化铝的使用逐渐受到限制,合成具有分级结构介孔-大孔氧化铝材料将具有重大意义.分级结构介孔-大孔氧化铝因其同时具有介孔和大孔孔道,不仅促进了客体分子在孔道内部的传送、减小扩散阻力,而且增大了孔道的比表面积,有助于改善吸附和分离效率、延长催化寿命,因此在吸附和催化方面具有广泛的应用前景.介绍了采用单模板法、双模板法和无模板法合成分级结构介孔-大孔氧化铝材料,并对材料在吸附和催化领域的应用进行探讨,最后对分级结构介孔-大孔氧化铝材料的发展趋势进行了展望.
From the first preparation of mesoporou alumina,more and more attentions have been paid to the material for its wide applications in catalysis and adsorption.With the development of macromolecule reaction in petrochemical industry,the use of mesoporous alumina has been gradually limited,so the preparation of hierarchically meso-marcoporous alumina will have great significance.The hierarchically meso-macroporous alumina with mesopores and macropores simultaneously has many potential applications in adsorption and catalytic fields,because the meso-macroporous structure is not only benefical to the transmission of guest molecule in channel,but also good for the improvement of specific surface area,then the efficiency of adsorption and separation can be promoted and the catalyst lifetime can also be extended.The review introduces the preparation methods of meso-macroporous alumina by single template,dual template and free template,as well as the practical applications in adsorption and catalytic fields.Finally,the development trend of hierarchically meso-macroporous alumina is also discussed.
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%