摘要
随着社会的快速发展,人们生活环境压力越来越大,相关法律日趋完善,如何生产高性能和低污染燃料油成为研究热点,其中,异构化技术得到广泛应用。SAPO-11分子筛由于具有温和的酸性和适宜的孔道结构,在众多双功能催化剂中脱颖而出。目前,合成SAPO-11的主要方法有水热合成法和微波合成法等。在异构化反应中,金属性与酸性的匹配是决定性因素。负载贵金属改性技术相对较成熟,但存在多种缺陷,限制其应用,非贵金属改性成为目前研究的热点。综述SAPO-11分子筛的合成方法和结构特征及近年来SAPO-11分子筛改性研究进展,并指出今后应在提高催化剂性能和降低催化剂成本等方面加以深入研究,以适应不同催化反应的要求。
With the rapid development of society, the increasing pressure on people＇s living environment and relevant laws getting mature, how to produce high-performance and low-pollution fuels become the research hotspots. Isomerization technology has been widely used. SAPO-11 molecular sieves stand out in a number of bifunctional catalysts due to their mild acidity and a suitable pore structure. At present, the main methods for the synthesis of SAPO-11 molecular sieves are hydrothermal synthesis and microwave synthesis methods. In the isomerization reaction, the match of metallicity and acidity is the decisive factor. So far, the precious metal modified technology is relatively mature, but there existing several defects in itself, which limits its application. Non-precious metals modified technology becomes the focus of current research. The synthesis methods and structural characteristics of SAPO-11 molecular sieves were reviewed,and the recent researches on modification of SAPO-11 molecular sieves were discussed. It is pointed out that improving the catalytic performance and reducing the cost of the catalyst to meet the dif- ferent requirements of the catalytic reaction are the research direction in the future.
出处
《工业催化》
CAS
2014年第3期167-172,共6页
Industrial Catalysis
基金
黑龙江教育厅科技项目资助(12521063)
