Interaction between Mo and Hb Zeolite

Liu Shenglin, Xin Wenjie, Huang Shengjun, Bai Jie, Xie Sujuan, Xu Longya
(Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023)

Abstract The effects of calcination temperature, Mo loading and pttvalme of molybdic acid salt solution. on the Hb zeolite structure was investigated by XRD and FT-IR, etc. Under calcination temperature 680oC and MoO42- precursor of aqueous solution of ammonium heptamolybdate, Al2(MoO4)3 forms from dealumination in Hb zeolite due to the strong interaction between Mo and Hb zeolite, which exists difference from the other interactions such as Mo and HZSM-5, MCM-22 or SSY. The amount of Al2(MoO4)3 increases with the loading of Mo on Hb zeolite.
Key words Hb zeolite, Mo loading, XRD/FT-IR characterization

　

Mo与Hb 分子筛之间的相互作用

刘盛林 辛文杰 黄声骏 白 杰 谢素娟 徐龙伢*
(中国科学院大连化学物理研究所 大连 116023)

摘要 利用XRD、FTIR等手段考察了焙烧温度，钼负载量和钼酸盐溶液的pH对Hb 分子筛结构的影响。结果表明，高温680° C、较高的MoO3含量(≥3.0(wt)%)并且Mo以MoO42-形式存在的情况下，Mo才与Hb 分子筛发生较强的相互作用，导致Hb 脱铝生成Al2(MoO4)3。随着Mo含量的增加，脱铝作用明显，生成的Al2(MoO4)3越多。这种相互作用和Mo与其它分子筛如HZSM-5、MCM-22以及SSY的相互作用存在明显的区别。
关键词 Hb 分子筛结构 Mo的添加 XRD FTIR

刘盛林 男，34岁，博士，从事多相催化研究。*联系人 E-mail:lyxu@dicp.ac.cn
国家自然科学基金资助项目

(PDF全文下载c03076)