Oxidation of Cyclohexane Using FePcY-Zeozymes Occluded in Polydimethylsiloxane Membranes

Zeolite-encapsulated Co(II), Ni(II) and Cu(II) complexes as catalysts for partial oxidation of benzyl alcohol and ethylbenzene

“…The encapsulated complexes are believed to be stable and reusable due to the following reasons: (1) complexes are immobilized in the cavities, (2) reduced formation of inactive oxo and peroxo dimeric and other polymeric species in the cavities due to the steric effects of zeolite framework and (3) the interaction of encapsulated complexes with the zeolite lattice [14][15][16][17][18][19][20][21]. In order to ascertain the stability, the catalyst samples were filtered out after the reaction, washed with acetone and analyzed by IR spectra.…”

“…For example, encapsulated salen complexes have been successfully employed for epoxidation [14], oxidation of phenols [15], direct oxidation of methane to methanol [16] and oxidation of p-xylene to terephthalic acid [17]. Simi- larly, encapsulated phthalocyanine complexes are known to promote the oxidation of hydrocarbons that mimic metalloenzymes [18], direct synthesis of adipic acid from cyclohexane or cyclohexene [19] and oxyhalogenation of aromatics [20]. Recently, we have reported Y zeolite-encapsulated complexes of 3-formylsalicylic acid as catalysts for oxidation reactions [21].…”

Template synthesis and characterization of hexaaza macrocycles containing pyridine iron(II) complex nanoparticles dispersed within nanoreactors of zeolite-Y

“…3 All modified NaY samples revealed the presence of oxygen, sodium, silicon and aluminium from the zeolite lattice in their XPS resolution spectra. The bands typical of the Fe(II)-py 2 N 4 complex, scarcely visible because of their low loading, were identified in the Fe 2p 3/2 and N 1s region.…”

Host (nanocavity of zeolite Y)/guest (Co(II), Ni(II) and Cu(II) complexes of unsaturated 16-membered octaaza; 3,4,11,12-tetramethyl-1,2,5,6,9,10,13,14-octaazacyclohexadecane; Me4[16]aneN8 nanocomposite materials (HGNM): template synthesis, characterization and catalytic oxidation of benzyl alcohol

“…They are known to catalyze a variety of reactions such as oxidation, hydrogenation, dehalogenation, Friedel-Crafts alkylation and alkylaromatic isomerisation or disproportionation etc. [2][3][4][5][6][7][8][9][10][11][12][13].…”

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Nanocavity zeolite-Y (host) encapsulated Co(II), Ni(II) and Cu(II) complexes of unsaturated 3,4,11,2,5,6,9,10,13,aneN 8 '; macrocycle (guest) were synthesized and characterized by chemical analyses, s.e.m., x.r.d., u.v.-vis., d.r.s., surface area, pore volume, conductometric, magnetic measurements and i.r. spectroscopy with a view to confirming the encapsulation of complexes and to arrive at the composition, structure and geometry of encapsulated complexes.

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