Reaction Kinetics and Catalysis Letters

, Volume 55, Issue 2, pp 291–304 | Cite as

Methylation of pyridine over zeolites. FT-IR studies for selectivity and acidity correlations

  • U. Kameswari
Article

Abstract

Methylation of pyridine on HY, HZSM-5, Mordenite, MgAlPO-11 and Zeolite Beta under gas phase conditions leads to the formation of 2-, 3-, 4-picolines along with higher alkylpiridines, while SAPO-5 does not exhibit any activity. On a conventional acid catalyst only 3-picoline and the successive higher products can be expected and the formation of 2- and/or 4-substituted products is intriguing. Two different mechanisms for the formation of 2-/4- and 3-substituted pyridines are proposed. FT-IR studies were carried out to understand the correlation between acidity and activity/selectivity for the reaction.

Keywords

Methylation Physical Chemistry Zeolite Catalysis Pyridine 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Akadémiai Kiadó 1995

Authors and Affiliations

  • U. Kameswari
    • 1
  1. 1.Department of ChemistryIndian Institute of TechnologyMadrasIndia

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