Synthesis and Toluene Adsorption/ Desorption Property of Beta Zeolite Coated on Cordierite Honeycomb by an In Situ Crystallization Method
Synthesis and Toluene Adsorption/ Desorption Property of Beta Zeolite Coated on Cordierite Honeycomb by an In Situ Crystallization Method
复制标题
原位结晶法合成堇青石蜂窝包覆β沸石及其甲苯吸附/解吸性能
DOI：
10.1002/ceat.200800260
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发表时间：
2008
影响因子：
2.1
通讯作者：
Zhaoliang Zhang
中科院分区：
文献类型：
--
作者：
Yexin Zhang;Qingyun Su;Zhongpeng Wang;Y. Yang;Ying Xin;Dong;Xi Yang;Hongbo Wang;Xiyan Gao;Zhaoliang Zhang
采用原位结晶法合成了堇青石陶瓷整体上的β沸石，并通过XRD、N 2 吸附/解吸、SEM和NH 3 -TPD技术进行了表征。采用甲苯吸附/解吸作为冷启动排放控制和挥发性有机化合物处理的探针测试。通过 XRD、SEM 和 N 2 吸附/解吸测量证实了载体上 β 的存在。沸石晶体既生长到堇青石大孔中，又生长在整体通道的表面上，形成一个集成的网络，确保牢固的附着力。较大的表面积和N 2 的吸附能力表明，载体上高度分散的β导致总酸度显着增加，从而对甲苯具有更大的吸附能力。此外，它可以将大量甲苯捕获到更高的温度，并对甲苯裂化和氧化表现出相当大的活性。这些归因于原位合成的β具有更大的酸性和更强的酸位。
The beta zeolite on cordierite ceramic monolith was synthesized by an in situ crystallization method and characterized by XRD, N 2 adsorption/desorption, SEM and NH 3 -TPD techniques. Toluene adsorption/desorption was used as probe test for the control of cold-start emissions and treatment of volatile organic compounds. The presence of beta on the supports was confirmed by XRD, SEM, and N 2 adsorption/desorption measurements. The zeolite crystals grow both into the cordierite macropores and on the surface of the monolith channels, which form an integrated network ensuring a strong adherence. The highly dispersed beta on supports, demonstrated by larger surface area and adsorption capacity of N 2 , resulted in a significant increase of the total acidity, and thus a greater adsorption capacity for toluene. Furthermore, it could trap larger amounts of toluene to higher temperature and show considerable activity for toluene cracking and oxidation. These are attributed to the greater acidity and stronger acid sites of in situ synthesized beta.
影响因子：
5.2
作者：
Elangovan, S. P.;Ogura, Masaru;Okubo, Tatsuya
通讯作者：
Okubo, Tatsuya