特定形貌介孔γ-氧化铝的形成机制及催化性能

项目名称： 特定形貌介孔γ-氧化铝的形成机制及催化性能

项目编号： No.51472018

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 一般工业技术

项目作者： 陈爱华

作者单位： 北京航空航天大学

项目金额： 83万元

中文摘要： 介孔γ-氧化铝在石油催化领域有着重要应用，然而由于该材料在形貌控制方面的局限性，有关其形貌结构与功能特性的关联鲜有报道。申请人在近期研究中发现无定型骨架的介孔镍铝氧化物经过水、热处理可形成边长约为200 nm的正四面体状介孔γ-氧化铝，负载钌后作为一氧化碳甲烷化反应的催化剂，其催化性能显著优于传统形貌同系介孔催化剂。本申请拟在该发现的基础上深入开展四面体状介孔γ-氧化铝的可控合成及形成机制研究，探索出低维小尺度、特定形貌介孔γ-氧化铝的合成新方法。以不同形貌的介孔γ-氧化铝为载体，负载金属活性中心，研究介孔γ-氧化铝的形貌对活性中心颗粒的大小、分散及晶面分布等的影响，通过催化性能测试，从基础研究层面揭示催化剂载体自身形貌结构与催化性能的关联性。该项目的成功实施，可对介孔金属氧化物的形貌控制及相关催化剂的设计与开发研究给出理论指导。

中文关键词： 介孔材料；氧化铝；形貌调控；催化材料；纳米材料

英文摘要： Mesoporousγ-Al2O3 has been widely used in the field of petrohelm and catalysis. There are few report about the relationship between the morphology of γ-Al2O3 and the properties due to the difficulty in the fabrication of mesoporousγ-Al2O3 with controllabe morphology in the nanoscale. Recently, we found that mesoporous Al2O3 with amorphous sckelton will change to γ-Al2O3 mesoporous tetroderon with about 200 nm in length after water and heat treatment.The catalyst exhibits much better catalytic performance after loading Ru, compared with the same catalyst without treatment.In this research, the controllable systhesis of mesoporous γ-Al2O3 with special morphologies in the nano scale and the formation mechansim will be studied in detail based on the work. Then, the active metals will be loaded onto the obtained mesoporous γ-Al2O3 with different shape. The influnece of matrix shape on the size and distrubtion of metals, and location of the crystalline face will studied deeply. The realationship between the morphology of matrix on the catalytic performance will be set up. This study is promising to support some useful information for the design and fabrication of novel mesoporous oxides and catalysts.

英文关键词： mesoporous materials;alumina;morphology control;catalytic materials;nano materials