Highly Efficient Benzothiophene Capture with a Metal-Modified Copper–1,3,5-Benzenetricarboxylic Acid Adsorbent
2018-05-17T00:00:00Z (GMT)
by
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.