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High Selective Alkylation of Aniline with Methanol to N-Methylaniline over [Fe]-KL Molecular Sieves

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Abstract

In the alkylation of aniline with methanol, [Al]-KL zeolite exhibits a much higher NMA (N-methylaniline) selectivity (>95%) and more stable activity with time on stream than NaX, NaY and Naβ under the same experimental conditions. Incorporation of an appropriate amount of Fe into the framework of zeolite L can enhance the reaction activity without loss of high NMA selectivity. This improvement is attributed to an increase in the basicity of the zeolite as shown by pyrrole-IR spectra. The high NMA selectivity of zeolite L may be due to its one-dimensional channel structure with no large cavities and its lower number of accessible acid sites.

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Authors and Affiliations

  1. Department of Chemistry, Nanjing University, Nanjing, 210097, China

    Chun Yang & Qinhua Xu

  2. National Laboratory of Molecular & Biomolecular Electronics, Nanjing, 210096, China

    Nongyue He

Authors
  1. Chun Yang
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  2. Nongyue He
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  3. Qinhua Xu
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Yang, C., He, N. & Xu, Q. High Selective Alkylation of Aniline with Methanol to N-Methylaniline over [Fe]-KL Molecular Sieves. Journal of Inclusion Phenomena 35, 123–130 (1999). https://doi.org/10.1023/A:1008158702009

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