Flexible ligand synthesis, characterization and liquid phase hydroxylation of phenol by H2O2 with host (nanopores of zeolite-Y)/guest [VO([R]2–N2X2)]2+ (R = H, CH3; X = NH, O, S) nanocomposite materials

2009 ◽  
Vol 65 (3-4) ◽  
pp. 349-360 ◽  
Author(s):  
Masoud Salavati-Niasari
Keyword(s):  
Liquid Phase ◽  
Zeolite Y ◽  
Nanocomposite Materials ◽  
Hydroxylation Of Phenol ◽  
Flexible Ligand ◽  
Ligand Synthesis

scholarly journals Catalyic Activity of Ruthenium(III) and Palladium(II) Complexes of 2-Methylbenzimidazole (Mebzlh) Encapsulated in Zeolite-Y and ZSM-5 for Liquid Phase Hydroxylation of Phenol

2012 ◽  
Vol 11 (2) ◽  
pp. 17-30
Author(s):  
B P Nethravathi ◽  
K N Mahendra
Keyword(s):  
Reaction Time ◽  
Liquid Phase ◽  
Zeolite Y ◽  
Hydroxylation Of Phenol ◽  
Reaction Condition ◽  
Chemical Measurements ◽  
Physico Chemical ◽  
Maximum Conversion

Ruthenium(III) and palladium(II) complexes of 2-methylbenzimidazole (Mebzlh) ligand encapsulated in the super cages of zeolite-Y and ZSM-5 have been synthesized and characterized by various physico-chemical measurements. A suitable reaction condition has been optimized for [Ru(Mebzlh)]-Y by considering the effect of various parameters such as different solvents, concentration of substrate, reaction time and amount of oxidant etc., for the maximum conversion of phenol to a mixture of catechol and hydroquinone. The results obtained showed that selectivity for the catechol formation is ca. 85%, even though the conversion of phenol varies in the order [Ru(Mebzlh)]-Y (35%) > [Pd(Mebzlh)]-Y (15 %) > [Ru(Mebzlh)]- ZSM-5(10 %) > [Pd(Mebzlh)]- ZSM-5 (2 %) after 6 h of reaction time.

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