Catalytic activity of chromium(III), iron(III) and bismuth(III) complexes of 1,2-bis(2-hydroxybenzamido)ethane (H2hybe) encapsulated in zeolite-Y for liquid phase hydroxylation of phenol

AbstractHY-zeolite and its deep-bed dealuminated and EFAL-extracted forms were tested in liquid phase alkylation of benzene with 1-hexadecene in a batch reactor at 120°C. Deep-bed dealumination of the HY-sample at 560 °C followed by careful selective extraction of extra-framework aluminium by hydrochloric acid increased the catalytic activity as well as oxidative regenerability of Y-zeolite.

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Dioxovanadium(V) Complexes of Dibasic Tridentate Ligands Encapsulated in Zeolite-Y for the Liquid Phase Catalytic Hydroxylation of Phenol Using H2O2as Oxidant

Catalysis Letters ◽

10.1023/b:catl.0000016959.93948.d7 ◽

2004 ◽

Vol 93 (1/2) ◽

pp. 121-127 ◽

Cited By ~ 22

Author(s):

Mannar R. Maurya ◽

Himani Saklani ◽

Amit Kumar ◽

Shri Chand

Keyword(s):

Liquid Phase ◽

Zeolite Y ◽

Tridentate Ligands ◽

Hydroxylation Of Phenol

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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

Mapana Journal of Sciences ◽

10.12723/mjs.21.2 ◽

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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Synthesis, characterization and liquid-phase hydroxylation of phenol with hydrogen peroxide over host (nanopores of zeolite-Y)/guest (oxovanadium(IV) complexes of tetraaza macrocyclic ligands) nanocatalyst

Inorganica Chimica Acta ◽

10.1016/j.ica.2008.09.043 ◽

2009 ◽

Vol 362 (7) ◽

pp. 2159-2166 ◽

Cited By ~ 18

Author(s):

Masoud Salavati-Niasari

Keyword(s):

Hydrogen Peroxide ◽

Liquid Phase ◽

Zeolite Y ◽

Macrocyclic Ligands ◽

Hydroxylation Of Phenol

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Liquid-Phase Hydrogenation to 2, 4-Tolylenediamine over Supported HY Catalysts

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.512-515.2381 ◽

2012 ◽

Vol 512-515 ◽

pp. 2381-2385

Author(s):

Xue Mei Zhang ◽

Feng Xing Niu

Keyword(s):

Catalytic Activity ◽

Liquid Phase ◽

Catalytic Hydrogenation ◽

Active Component ◽

Experimental Results ◽

Mass Ratio ◽

Liquid Phase Hydrogenation ◽

Catalytic Test

We have successfully prepared a novel passivation Ni/HY catalyst by the technologies of macerate-precipitatio.The catalysts are comprised of two contents: HY as carrier, Ni as active component，and we put it into the process of preparating aromatic amines.The nature of the catalysts was discussed based on the characterization results of BET , IR , SEM , XRD , TEM ,TPD , XPS and TPR . The catalytic hydrogenation technology for 2,4-dinitrobenzene in liquid phase can be an attractive and elegant routine for production of 2,4-tolylenediamine. The catalytic activity is evaluated at 2.2 MPa, 90 °C, 750r/min, solvent with reaction materials mass ratio of 60, catalyst with reaction materials mass ratio of 0.1. In the catalytic test, The experimental results over the catalyst showed that 2,4-dinitrobenzene and 2,4-tolylenediamine conversion and selective of 99.88% and 99.16% were obtained respectively.It is found that the catalyst is highly dispersion, stable, and reusable. No obvious deactivation of the catalyst was observed after repeated using twelve times.

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