Sugunan, S; Nishamol, K(Indian Journal of Chemistry, May , 2002)
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Abstract:
The liquid-phase Friedel-Crafts acylation of toluene using benzoyl chloride as benzoylating agent has heen carried out over Nix, Mn(l-x)Fe2 O4 (x=O, 0.2, 0.4, 0.6, 0.8 and 1.0) type systems under different reaction conditions. It is observed that the systems with high 'x' values are effective for the conversion of BOC and the selective formation of 4-MBP. Selectivity for 4-MBP over MnFe2O4 is more than 90% under the optimized reaction conditions. Sites of moderate acidity is effective in calalyzing the benzoylation reaction.
Anas, K; Dr.Mohammed Yusuff,K K(Cochin University of Science & Technology, April , 2003)
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Abstract:
This thesis deals with the synthesis and charcterisation of some supported
transition metal complexes and their catalytic properties. Two industrially
important reactions were carried out: i) cyclohexanol oxidation and ii)
hydrodesulphurization of diesel. Thesis is divided into nine chapters. An
overview of the heterogenised homogeneous systems is given in Chapter 1.
Chapter 2 deals with the materials and methods used for the preparation and
characterisation. Details regarding the synthesis and characterisation of zeolite
encapsulated transition metal complexes are given in Chapter 3 to Chapter 7. In
Chapter 8, the results of catalytic activity studies of the cyclohexanol oxidation
using the zeolite encapsulated complexes are presented. Details of preparation of
hydrodesulphurization catalysts through the molecular designed dispersion
method, their characterization and catalytic activity studies are presented in
Chapter 9. References are given at the end of the thesis.
Description:
Department of Applied Chemistry,Cochin University of Science and Technology
Sugunan, S; Renuka, N K(Indian Journal of Chemistry, February , 2002)
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Abstract:
Sm2O3 - vanadia catalysts have been prepared by wet
impregnation method using NH4VO3 solution. The surface
properties of the prepared catalysts have been studied using FTIR.
XRD. surface area and pore volume data. The acid-base properties
of the system have been investigated by titrimetric method using
Hammett indicators. adsorption of electron acceptors as well as
decomposition of cyclohexanol. Phenol alkylation reaction by
methanol has been carried out to investigate the catalytic activity.
It has been observed that the selectivity of the products depends
upon the composition of the supported system