Partial oxidation of light paraffins with hydrogen peroxide in the presence of peroxocomplexes of copper(II) hydroxide

Synthesis, characterization and catalytic activity of copper(II) complexes of 14-membered macrocyclic ligand; 3,10-dialkyl-dibenzo-1,3,5,8,10,12-hexaazacyclotetradecanel/zeolite encapsulated nanocomposite materials

“…The more activity of (Benzyl) 2 Bzo 2 [14]aneN 6 system has clearly arisen from the existence of electron donating ligand which facilitate the electron transfer rate, a process that has previously been observed by us in other oxidation reactions [10][11][12][13]. All conversions efficiencies with high selectivity obtained in this study are significantly higher than that obtained using copper containing porous and nonporous materials [1][2][3][4][5][6][7][8].…”

“…The heterogeneous oxidation catalysis of alcohols with an environmentally suitable oxidant, hydrogen peroxide, is quite an interesting objective for both the academic and industrial fields [1]. Among the newer heterogeneous oxidation catalysts attracting interest are copper containing porous and nonporous materials, such as Cu 2+ -phthalocyanine incorporated inside Y-faujasite and MCM-41 [2], Cu-HMS [3], Cu 2+ -substituted MCM-41 [4], zeolite encapsulated Cu 2+ -salens [5], Cu 2+ /X and Y zeolite [6], Cu(OH) 2 /silica [7], and cis-bisglycianato Cu 2+ /1,6-naphthalenediol oligomer [8], which have been shown to be active for selective oxidations of a variety of organic compounds in the presence of hydrogen peroxide or organic peroxide. In this paper, we report the synthesis and characterization of copper(II) complexes of 14-membered hexaaza macrocyclic ligand, 3,3,5,8,10,[Cu(R 2 Bzo 2 [14]aneN 6 )] 2+ (R = H, Me, Et, Bu and benzyl), encapsulated within the nanodimensional pores of zeolite-Y by the one-pot template condensation of formaldehyde and 1,2-phenylenediamine with alkyl and benzyl amine, [Cu(R 2 Bzo 2 [14] [9].…”

Formic Acid Production Via Methane Peroxide Oxidation Over Oxalic Acid Activated Fe-MFI Catalysts

“…On the other hand, Fe-and Cu-containing zeolites are known as 9 very active and stable catalysts for the wet peroxide oxidation (WPO) of a variety of organic 10 compounds [34][35][36][37][38][39][40], and for gas phase methane oxidation [41,42]. Even though Fe-and Cu-11 containing hydroxides and zeolites were shown earlier to catalyze the peroxide oxidation of light 12 paraffins and olefins [43,44], and, recently, of methane to methanol and/or formic acid at a high 13 enough selectivity under mild conditions (323 K) [12,45,46], we failed to find any literature 14 data concerning influence of structural and textural characteristics of the zeolite catalysts on the 15 process selectivity. In our earlier paper [14] we considered the influence of the texture and 16 morphology of Fe-containing zeolites on the selectivity and activity to the peroxide oxidation of 17 methane.…”

Methane Catalytic Peroxide Oxidation Over Fe-Containing Zeolite

“…С другой стороны, Fe-и Cu-содержащие цеолиты являются весьма активными и стабильными катализаторами жидкофазного пероксидного окисления разнообразных органических соединений [21][22][23][24][25][26][27], а также газофазного окисления метана [28,29]. Fe-и Cu-содержащие гидроксиды и цеолиты, как показано ранее, катализируют пероксидное окисление легких парафинов и олефинов [30,31], а также селективное окисление метана в метанол и/или муравьиную кислоту в мягких условиях (323 K) [29][30][31]. Однако мы не смогли найти какие-либо литературные данные, касающиеся влияния структурных и текстурных характеристик цеолитных катализаторов на селективность последнего процесса.…”