Highly Efficient Benzothiophene Capture with a Metal-Modified Copper–1,3,5-Benzenetricarboxylic Acid Adsorbent

Abstract

To construct more desirable adsorption affinity between the current metal−organic frameworks and benzothiophene (BT), a novel desulfurizer (V/Cu−BTC, where BTC represents 1,3,5-benzenetricarboxylic acid) was prepared by reducing Cu(II) to Cu(I) with V(III) on Cu−BTC using a hydrothermal synthesis method. Using nitrogen adsorption− desorption, powder X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy, we approved that the modifications of those novel desulfurizers have been successfully realized and further compared their structural changes. The BT capture performance from the different simulated fuels with V/Cu−BTC was evaluated by batch tests. The results manifest that V/Cu−BTC exhibited impressive desulfurization capacity, which is grander to Cu−BTC and some other adsorbents reported previously. Additionally, as a result of sieving and inertia mechanisms, this adsorbent possessed an extremely high affinity for BT capture in the presence of benzene. V/Cu−BTC showed a remarkable stability in BT adsorption, maintaining more than 90% initial sulfur uptake capacity after 5 regeneration times. In general, the V/ Cu−BTC material is very beneficial for the adsorptive removal of BT.

Synthesis of Nanocellulose Aerogels and Cu-BTC/Nanocellulose Aerogel Composites for Adsorption of Organic Dyes and Heavy Metal Ions

“…Among the various types of MOFs, copper benzene tricarboxylate Cu-BTC or Cu 2 (BTC) 3 (also called HKUST-1 or MOF-199) [21] [22] is one of the distinguished structure together with the IRMOF series. Cu-BTC was rst reported in 1999 by Chui et al [23] and has attracted considerable attention both theoretically and experimentally [24].…”

Synthesis of bimetallic–organic framework Cu/Co-BTC and the improved performance of thiophene adsorption

“…So far, a bunch of adsorbents have been reported for desulfurization, such as metal oxides, 13 active carbon, 14 zeolites, [15][16][17] mesoporous materials 18,19 and metal-organic framework (MOF) materials. [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] Among them, MOFs are getting more and more interest in adsorption desulfurization in recent years because of the high specic surface areas, highly ordered threedimensional pore structures, and easy modication of pore size and shape. 20 Based on these advantages, some pristine MOFs have been investigated in adsorption desulfurization.…”

“…24,25 Besides these, some MOFs built by the same ligand but different metal ions have also been studied to investigate the effect of central metals on the desulfurization performance, since the coordinated unsaturated central metals are considered as the adsorption sites for desulfurization. [26][27][28][29][30][31][32][33] Khan et al 26 studied the removal of BT using three analogous MOFs MIL-53(Al, Cr, V) and found that MIL-47(V) showed the best adsorption capacity. This result was ascribed to the highest acidity of MIL-47(V), though the origin of acidity was not clear.…”

“…Considering the results in the literatures that central metals play important role in adsorption desulfurization, a new strategy to improve the desulfurization performance by doping other metals into the framework was proposed recently. [27][28][29] Dai and co-workers reported the synthesis of bimetallic Ni/Cu-BTC, 27 Zn/Cu-BTC, 28 V/Cu-BTC 29 and trimetallic Ni/Zn/Cu-BTC 30 by solvothermal approach, which displayed the same crystalline structure as the monometallic counterpart HKUST-1. And they found that the trimetallic MOFs exhibited a higher desulfurization capacity than bimetallic ones and HKUST-1, due to the synergistic effect of different kinds of metals.…”

Probing the intrinsic catalytic activity of carbon nanotubes for the metal-free oxidation of aromatic thiophene compounds in ionic liquids

“…Herein, we propose an oCNTs/ILs catalytic system for the oxidation of dibenzothiophene (DBT) with H 2 O 2 as the oxidant. The oxidation of aromatic thiophene is one of the most important reactions to remove the aromatic sulfur-containing compounds from the fuel [37,38] . oCNTs were chosen as model carbon catalysts to probe the influence of different oxygen groups and ILs on the catalytic system.…”