摘要
γ-Al2O3作为化工领域广泛使用的催化剂载体,具有吸附性好,比表面积大,活性高等显著优点。但是γ-Al2O3属于亚稳态,高温下有向α-Al2O3转化的趋势,这就会影响催化剂的活性,降低γ-Al2O3的效能。经研究发现向γ-Al2O3中掺杂一些元素能有效的提高其热稳定性。作者综述了近年来掺杂元素对γ-Al2O3热稳定性研究的进展情况。
As a kind of catalyst carrier, γ-alumina is in use throughout chemical industry, γ-Alumina has a large capacity of absorption,high surface area and catalytic activity. But there is a tendency that the metastable state γ-alumina turns into stable a-alumina in a high temperature. It can influence the activity of catalyst. And it can degrade the ability of γ-alumina. It was found that doping element on γ- alumina can improve the thermal stability effectively. This paper reviewed the status of the influence on thermal stability of γ-alumina doped with element.
出处
《化工科技》
CAS
2012年第3期58-61,共4页
Science & Technology in Chemical Industry
基金
辽宁省自然科学基金资助项目(201102119)
