后处理工艺制备多级孔Ti-BEA沸石及其环氧化催化性能

任文超 华子乐 葛同广 周晓霞 陈立松 朱颜 施剑林

引用本文: 任文超, 华子乐, 葛同广, 周晓霞, 陈立松, 朱颜, 施剑林. 后处理工艺制备多级孔Ti-BEA沸石及其环氧化催化性能[J]. 催化学报, 2015, 36(6): 906-912. doi: 10.1016/S1872-2067(14)60267-9 shu
Citation:  Wenchao Ren, Zile Hua, Tongguang Ge, Xiaoxia Zhou, Lisong Chen, Yan Zhu, Jianlin Shi. Post-synthesis of hierarchically structured Ti-β zeolites and their epoxidation catalytic performance[J]. Chinese Journal of Catalysis, 2015, 36(6): 906-912. doi: 10.1016/S1872-2067(14)60267-9 shu

后处理工艺制备多级孔Ti-BEA沸石及其环氧化催化性能

    通讯作者: 华子乐,电话: (021)52412708; 传真: (021)52413122; 电子信箱: huazl@mail.sic.ac.cn;施剑林,电话: (021)52412712; 传真: (021)52413122; 电子信箱: jlshi@mail.sic.ac.cn; 华子乐,电话: (021)52412708; 传真: (021)52413122; 电子信箱: huazl@mail.sic.ac.cn;施剑林,电话: (021)52412712; 传真: (021)52413122; 电子信箱: jlshi@mail.sic.ac.cn
  • 基金项目:

    国家重点基础研究发展计划(973计划, 2013CB933200) (973计划, 2013CB933200)

    国家高技术研究发展计划(863计划, 2012AA062703) (863计划, 2012AA062703)

    国家杰出青年科学基金(51225202) (51225202)

    重质油国家重点实验室开放课题(SKLOP201402003). (SKLOP201402003)

摘要: 基于脱铝多级孔BEA沸石与二氯二茂钛的固相反应, 开展了钛掺杂量可调的多级孔Ti-beta后处理工艺制备研究. 对制备的多级孔Ti-beta样品的理化性质进行了表征, 包括X射线衍射、氮气吸附脱附测试、扫描电镜、透射电镜、紫外可见吸收光谱和紫外拉曼光谱等. 结果表明, 多级孔BEA沸石具有较好的化学稳定性, 脱铝-钛化的后处理过程未对样品多级孔结构产生明显影响. 以环己烯和十二烯的烯烃环氧化为探针反应表征了合成多级孔Ti-beta与纯相微孔Ti-beta沸石的催化性能. 结果表明, 在小分子环己烯的环氧化反应中, 多级孔Ti-beta沸石的催化活性(转化率59.4%)与微孔Ti-beta相当(转化率57.9%); 但是在较大分子十二烯的催化反应中, 多级孔结构Ti-beta材料的催化性能(转化率11.1%)明显优于纯相微孔材料(转化率6.8%), 且产物中环氧化物选择性更高(分别为60.3%和37.8%).

English

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  • 发布日期:  2015-06-20
  • 收稿日期:  2014-11-03
  • 网络出版日期:  2014-12-15
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