化工学报2016，Vol.67Issue(8)：3429-3435,7.DOI:10.11949/j.issn.0438-1157.20160340
β沸石结构及其催化性能的调控
Regulation of structure and catalytic performance ofβ-zeolite by post treatments
摘要
Abstract
β-Zeolite, an important acidic catalyst, its structure and acidity can significantly influence the catalytic activity. Through two combinational treatments of acid-calcination and acid-steaming, the structure and acidity ofβ-zeolite were tuned. After treatment, the modifiedβ-zeolites was characterized by N2 adsorption and desorption, X-ray photoelectron spectroscopy (XPS), and infrared spectra (IR). The activity forcatalytic cracking of n-octane at 500℃ was evaluated. It showed that BET specific area and Lewis acid sites (L1445 and L1455) were tuned by different treatments. The catalyst by acid-calcination treatment exhibited better activity for catalytic cracking of n-octane than acid-steaming treatment. The higher BET surface area and the Lewis acid sites account for the higher catalytic cracking activity of the catalyst by acid-calcination treatment. The concentrations of Brønsted acid and two types of Lewis acid as well as textural properties were tuned, which lead to the difference in catalytic activity between the original and finalβ-zeolites.关键词
β沸石/酸处理/焙烧/水热/催化/酸性Key words
β-zeolite/acid treatment/calcination/steaming/catalysis/acidity分类
能源科技引用本文复制引用
王闻年,袁德林,李浩,任申勇,郭巧霞,申宝剑..β沸石结构及其催化性能的调控[J].化工学报,2016,67(8):3429-3435,7.基金项目
国家重点基础研究发展计划项目（2012CB215001）；国家自然科学基金项目（U1462202）。@@@@supported by the National Basic Research Program of China (2012CB215001) and the National Natural Science Foundation of China (U1462202) （2012CB215001）
