[1] Zhang Jin, Xiao Guomin, Liang Henghong,. Study on catalyst for pyridine synthesis [J]. Journal of Southeast University (English Edition), 2004, 20 (1): 62-64. [doi:10.3969/j.issn.1003-7985.2004.01.013]

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Study on catalyst for pyridine synthesis()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

20

Issue:

2004 1

Page:

62-64

Research Field:

Chemistry and Chemical Engineering

Publishing date:

2004-03-30

Info

Title:

Study on catalyst for pyridine synthesis

Author(s):

Zhang Jin;  Xiao Guomin;  Liang Henghong

Department of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, China

Keywords:

pyridine;  catalyst;  ZSM-5

PACS:

TQ253.2

DOI:

10.3969/j.issn.1003-7985.2004.01.013

Abstract:

The synthesis of pyridine from aldehydes and ammonia was performed over ZSM-5 catalyst. The catalytic activity in reaction was correlated with the acidity of the zeolite catalysts. In this study a few of ZSM-5( m( SiO₂)/m(Al₂O₃)=120)were prepared and modified with Co²⁺, Fe³⁺. The surface acidity was determined by Py-IR technique. It was found that CoZSM-5 and FeZSM-5 have fewer Lewis acid sites than HZSM-5. The decrease of Lewis acid sites leads to decreasing the ability of NH₃ adsorption, this phenomenon insures that there are adequate acid sites discovering and reacting with aldehydes. It is advantageous to the reaction. By using a CoZSM-5 catalyst, the yields of pyridine base can reach 78%. The study provides a theoretical base for preparing high activity and high selective catalyst for pyridine synthesis.

References:

[1] Antero L, Marko M. Separation of pyridine or pyridine derivatives from aqueous solution [P]. US 6087507. 2000-07-01.
[2] McAteer C H, Brown D C, Davis R, et al. Gas-phase preparation of pyridine and alkylpyridines [P]. US 5780635. 1998-07-14.
[3] Chitnis G K, Kowalski J A, Williams M, et al. Process and zeolite-phosphorus catalysts for the manufacture of pyridines and picolines from the cyclocondensation of ammonia and C1-5 carbonyl compounds [P]. US 5994550. 1999-11-30.
[4] Morihito S, Yasutaka T. Preparation of pyridine bases [P]. JP 11209346. 1999-08-03.
[5] Angevine P J, Cynthia T W, Potter T C. Synthesis of pyridine and 3-alkylpyridine via zeolite-catalyzed [P]. US 5395940. 1995-05-07.
[6] Golunski S E, Jackson D. Heterogeneous conversion of acyclic compounds to pyridine bases[J]. Appl Cata, 1986, 23(3): 1-14.

Memo

Memo:

Biographies: Zhang Jin(1969—), female, graduate; Xiao Guomin(corresponding author), male, doctor, professor, xiaogm@seu.edu.cn.

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