Ni-Mo Supported Nanoporous Graphene as a Novel Catalyst for HDS and HDN of Heavy Naphtha

Abstract

Reducing sulfur and nitrogen compounds is essential in producing clean fuels for providing a green environment. In this regard, a novel nanocatalyst has been proposed for Hydrodesulfurization (HDS) and Hydrodenitrogenation (HDN) of heavy naphtha. To this end, Ni-Mo was loaded on nanoporous graphene (Ni-Mo/NG) through the incipient wetness impregnation method. The synthesized nanocatalyst was characterized by FE-SEM, ICP, BET, FTIR, XRD and TPR methods. The catalytic activity of the Ni-Mo/NG catalyst was evaluated at 290 o C and 30 bar. For the synthesized Ni-Mo/NG catalyst, conversions of total sulfur, total nitrogen and R-SH compounds (mercaptans) were obtained as 99.5, 99.4 and 99.3%, respectively, which shows considerable enhancement in comparison to the Ni-Mo/γ-Alumina industrial catalyst.

Performance study of Ni, Co, and Mo catalysts supported on γ ‐Al 2 O 3 and HZSM5 in HDS reactions of mixed naphtha

“…Comparing the results obtained from reactor test experiments shows that the performance of 3.5Ni‐17Mo/ γ‐ Al 2 O 3 prepared catalyst is slightly better than that of commercial industrial catalyst. The same results were reported for the NiMo catalysts supported on γ‐ Al 2 O 3 and graphene 5,50 . The obtained results are in accordance with those in the literature.…”

“…The same results were reported for the NiMo catalysts supported on γ-Al 2 O 3 and graphene. 5,50 The obtained results are in accordance with those in the literature. Zhang et al 52 stated that high interaction between alumina and active phase inhibits from Ni 3 S 2 formation, and the interaction could be adjusted after the introduction of appropriate metal oxide such as zirconia or silica on the support.…”

“…In the XRD pattern of γ‐ Al 2 O 3 powder, the diffraction peaks at 2 θ of 37.94°, 45.97°, and 66.73° are in compliance with the peaks reported by other researchers. For this laboratory‐synthesized γ‐ Al 2 O 3 support, some other peaks can be seen, which is caused by impurities created during its preparation process 48‐50 . All XRD patterns of HZSM5 supported catalysts are matched with ICDD ref.…”

“…For this laboratorysynthesized γ-Al 2 O 3 support, some other peaks can be seen, which is caused by impurities created during its preparation process. [48][49][50] All XRD patterns of HZSM5 supported catalysts are matched with ICDD ref. code 00-0044-0003.…”

The production of hydro‐processed renewable diesel over the nonsulfide catalyst

“…All three catalysts had an infrared wavelength absorption band at 3400 cm −1 , which was attributed to the O‐H bond derived from water, 37 as well as at 1650 cm −1 , which was attributed to the C═O bond, and also at 700 cm −1 . The spent catalyst had an extra peak at wavelengths of 2850 cm −1 and 700 cm −1 , which was attributed to the CH bond 38 and NiO bond, respectively. The C‐H bond was believed to have come from the carbon deposit on the catalyst surface or from coking.…”