Preparation of Fe@Cu‐BDC and its catalytic performance for benzene hydroxylation

Abstract

Novel Fe@Cu‐BDC catalysts were synthesized by adsorbing various contents of Fe ions on the surface and into the channels of Cu‐BDC support through an in situ method under ultrasonication. The structure of the catalysts was characterized using X‐ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, energy‐dispersive X‐ray spectrometry, X‐ray photoelectron spectroscopy and thermogravimetric analysis. The catalytic activity of catalysts for benzene hydroxylation was evaluated. The results showed that the Fe@Cu‐BDC catalysts had favorable catalytic activity for benzene hydroxylation. The yield of products can reach ca 37% and the selectivity of phenol can reach ca 62% over the 6% Fe@Cu‐BDC catalyst at 60°C in a reaction time of 75 min. Furthermore, the contents of Fe and solvent played a key role in benzene hydroxylation. After the reaction, the catalyst could be easily separated from the reaction mixture by centrifugation and reused for five times without significant decrease in activity.

Hydroxylation of benzene to phenol over heteropoly acid H5PMo10V2O40 supported on amine-functionalized MCM-41

“…[6][7][8][9][10][11][12] The commonly used oxidants are H 2 O 2 , O 2 and N 2 O, etc. [13][14][15] Among them, H 2 O 2 shows relatively higher activity. 16,17 Therefore, great efforts have been done in the last decades to develop excellent catalysts for hydroxylation of benzene to phenol using H 2 O 2 .…”

An iron-containing POM-based hybrid compound as a heterogeneous catalyst for one-step hydroxylation of benzene to phenol

“…Based on the above results and the mechanism studies in the literature, [50][51][52][53][54] a possible reaction pathway for the hydroxylation of benzene with POM-based catalysts was proposed (Scheme 1). Initially, Fe 2+ in the compound was oxidized to Fe 3+ by H 2 O 2 and • OH was produced (eqn (1)).…”

Vanadium Oxyacetylacetonate Grated on Metal Organic Framework as Catalyst for the Direct Hydroxylation of Benzene to Phenol

“…[7] Especially, more and more attention has been paid to the selective hydroxylation of benzene to phenol by photocatalysis. [8] Most of the catalysts used in benzene hydroxylation reaction are transition metals and their oxides, such as the vanadium species contained in catalysts, [9] iron contained in catalysts, [10,11] copper contained in catalysts [12,13] etc. However, the performance of photocatalytic reaction system for the hydroxylation of benzene to phenol is far from acceptable.…”