Synthesis and Characterization of V-HMS Employed for Catalytic Hydroxylation of Benzene

Abstract

V-HMS catalysts with different vanadium content have been prepared by co-synthesis method using dodecylamine as template. The isolated VO 4 species are successfully incorporated into the framework of HMS for the samples with low vanadium content. The effect of various reaction conditions on the hydroxylation of benzene to phenol with H 2 O 2 as oxidant in aqueous acetic acid solvent was investigated where the yield of phenol achieves 11.1% under the optimized condition.

Novel Ti and Mn Mesoporous Molecular Sieves: Synthesis, Characterization and Catalytic Activity in the Epoxidation of Vegetable Oil

“…The presence of signal between 50 and 60 ppm in the 13 C NMR spectrum was attributed to the epoxy carbons [17]. So, the selectivity could be monitored by the area increase of the epoxy carbons signal between 50 and 60 ppm of the 13 When Mn-HMS (50) was used as the catalyst, a yield of 12.1% was achieved in 6 h, 17.5% using Ti-HMS (50). After 24 h, the yield increased to 23.9% with Mn-HMS (50) as catalyst (compared to the 21.8% yield of Ti-HMS (50)).…”

“…HMS has been modified by transition metal ions such as Al [11], Cu [12], V [13], Ti [14] and Fe [15]. But there is no report studying the Mn-HMS.…”

Synthesis of iron orthophosphate catalysts by solution and solution combustion methods for the hydroxylation of benzene to phenol

“…Because of its environmental and economic advantages, hydrogen peroxide is preferred. The catalytic hydroxylation of benzene using hydrogen peroxide has been studied in the presence of vanadium based catalysts [24,25], zeolites [26], and iron based catalysts [27,28], among others.…”

Enhanced catalytic activity over vanadium-containing silylated SBA-15 catalysts for styrene epoxidation and benzene hydroxylation

“…In previous research, we found that vanadium species showed the excellent catalytic activity in the benzene hydroxylation reaction and a higher http://dx.doi.org/10.1016/j.apcata.2014.03.019 0926-860X/© 2014 Elsevier B.V. All rights reserved. phenol yield could be obtained by enhancing the benzene adsorption and the redox property of vanadium species [22,23].…”