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首页> 外文期刊>RSC Advances >Enhancement in activity and shape selectivity of zeolite BEA by phosphate treatment for 2-methoxynaphthalene acylation
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Enhancement in activity and shape selectivity of zeolite BEA by phosphate treatment for 2-methoxynaphthalene acylation

机译：磷酸盐处理2-甲氧基萘酰化的沸石BEA活性和形状选择性的增强

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摘要

Pore-engineering of large pores of zeolite BEA by phosphate treatment effectively narrowed the pores with the creation of new acid sites. Phosphate modification of BEA with lower loading was more effective in pore modification without affecting the zeolite structure. Pyrophosphates and polyphosphates are mainly responsible for the narrowing of the zeolite pores. Both the activity and shape selectivity for 2-acetyl-6-methoxynaphthalene were enhanced in the acylation of 2-methoxynaphthalene. At higher concentration of phosphates, conversion and selectivity decreased due to dealumination. 1% P loading was found to be optimum for the acylation of 2-methoxynaphthalene. With the optimized phosphate modification of BEA, high selectivity of 78% to 2-acetyl-6-methoxynaphthalene was achieved with 77% conversion.
机译：通过磷酸盐处理的沸石BEA大孔的孔工程有效地缩小了毛孔与新的酸位点的产生。 磷酸盐改性具有较低负载的BEA在孔改性中更有效而不影响沸石结构。 焦磷酸盐和多磷酸盐主要负责沸石孔的变窄。 在2-甲氧基萘的酰化的酰基化中提高了2-乙酰基-6-甲氧基萘的活性和形状选择性。 在较高浓度的磷酸盐，转化和选择性因荒营而降低。 发现1％p加载为2-甲氧基萘的酰化为最佳。 随着BEA的优化磷酸盐改性，通过77％转化率实现了78％至2-乙酰基-6-甲氧基萘的高选择性。

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  • 来源
    《RSC Advances》 |2016年第93期|共8页
  • 作者

    Hodala Janardhan L.; Halgeri Anand B.; Shanbhag Ganapati V.;

  • 作者单位

    Poornaprajna Inst Sci Res Div Mat Sci Bangalore 562164 Karnataka India;

    Poornaprajna Inst Sci Res Div Mat Sci Bangalore 562164 Karnataka India;

    Poornaprajna Inst Sci Res Div Mat Sci Bangalore 562164 Karnataka India;

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  • 正文语种 eng
  • 中图分类 化学;
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