Issue 5, 2013
From the journal:

Catalysis Science & Technology

A study on factors influencing cross and self product selectivity in aldol condensation over propylsulfonic acid functionalized silica†

Kamlesh N. Tayadea  and  Manish Mishra*a  

* Corresponding authors

a Department of Chemical Engineering and Shah-Schulman Center for Surface Science and Nanotechnology, Faculty of Technology, Dharmsinh Desai University, College Road, Nadiad – 387 001, Gujarat, India
E-mail: manishorgch@gmail.com
Fax: +91 268 2520501
Tel: +91 268 2520502

Abstract

Propylsulfonic acid functionalized silica (SFS) catalysts with varying amounts of surface propylsulfonic acid species (PrSA) and acidity were synthesized and characterized. The aldol condensation of benzaldehyde and n-heptanal over SFS catalysts was studied as a model reaction (which involves cross and self condensation reactions) to investigate the role of surface PrSA species in the cross condensation. The reaction temperature, reactant molar ratio and solvent nature (polar/non-polar) were found to be major reaction parameters controlling the cross and self aldol product selectivity. It was observed that the characteristics of carbonyl substrates influence their reactivity towards cross and self condensation over SFS catalyst.

Graphical abstract: A study on factors influencing cross and self product selectivity in aldol condensation over propylsulfonic acid functionalized silica

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Article information

DOI
https://doi.org/10.1039/C3CY20613K
Article type
Paper
Submitted
01 Sep 2012
Accepted
11 Jan 2013
First published
14 Jan 2013

Catal. Sci. Technol., 2013,3, 1288-1300

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A study on factors influencing cross and self product selectivity in aldol condensation over propylsulfonic acid functionalized silica

K. N. Tayade and M. Mishra, Catal. Sci. Technol., 2013, 3, 1288 DOI: 10.1039/C3CY20613K

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