高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (03): 453-457.doi: 10.3969/j.issn.0251-0790.2012.03.004

• 研究论文: 无机化学 • 上一篇    下一篇

一步水热合成Mn-ZSM-5纳米分子筛及其性能

张前1, 陈春影2, 丁双2, 张文婷2, 许迪欧2, 唐晓建2, 王润伟2, 姜日花3, 张宗弢2, 裘式纶2   

  1. 1. 吉林大学材料科学与工程学院, 长春 130021;
    2. 吉林大学无机合成与制备化学国家重点实验室, 长春 130021;
    3. 吉林大学中日联谊医院, 长春 130033
  • 收稿日期:2011-06-20 出版日期:2012-03-10 发布日期:2012-03-10
  • 通讯作者: 张宗弢, 男, 博士, 教授, 主要从事无机纳米能源材料研究.
    姜日花, 女, 博士, 教授, 主要从事医学材料研究. E-mail:zzhang@jlu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 20971052)资助.

Synthesis and Property of Nano-sized Mn-ZSM-5 Zeolite via One-step Hydrothermal Method

ZHANG Qian1, CHEN Chun-Ying2, DING Shuang2, ZHANG Wen-Ting2, XU Di-Ou2, TANG Xiao-Jian2, WANG Run-Wei2, JIANG Ri-Hua3, ZHANG Zong-Tao2, QIU Shi-Lun2   

  1. 1. College of Materials Science and Engineering,Jilin University, Changchun 130012, China;
    2. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, China;
    3. China-Japan Union Hospital, Jilin University, Changchun 130033, China
  • Received:2011-06-20 Online:2012-03-10 Published:2012-03-10

摘要:

在强碱性条件下直接引入二价锰源, 一步合成出高纯度的纳米级Mn-ZSM-5分子筛. 通过X射线粉末衍射(XRD)、 傅里叶变换红外光谱(FTIR)、 扫描电子显微镜(SEM)、 29Si核磁共振波谱(29Si NMR)、 电感耦合等离子光谱(ICP)和氮气吸附-脱附等测试方法对其进行结构表征和性能测试. 结果显示, 锰原子存在于沸石骨架中, 产物为具有MFI结构的纳米级分子筛. 使用苯乙烯氧化反应作为探针反应, 以过氧化氢为氧化剂, 结果显示苯乙烯转化率达到84.98%, 转化数(TON)为208, 环氧苯乙烷选择性为87.62%, 产率为74.46%.

关键词: Mn-ZSM-5分子筛, 强碱, 水热合成, 苯乙烯氧化

Abstract:

High pure Mn-ZSM-5 zeolite was synthesized through one-step hydrothermal method by direct introduction of divalent manganese source under strong alkaline condition. The samples were characterized by XRD, FTIR, 29Si NMR, SEM, ICP and N2 adsorption-desorption techniques. The results indicated that manganese irons were incorporated into the zeolite skeleton. Using styrene oxidation as a probe reaction, H2O2 as the oxidant and Mn-ZSM-5 as the catalyst, the conversion of styrene reached 84.98%, turnover number was 208, styrene epoxide selectivity and yield was about 87.62% and 74.46%, respectively.The synthesized nano sized Mn-ZSM-5 is a promising catalyst for oxidation reactions.

Key words: Mn-ZSM-5 zeolite, Strong alkaline, Hydrothermal synthesis, Styrene oxidation

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