One-pot synthesis of ordered mesoporous NiMo-Al 2 O 3 catalysts for dibenzothiophene hydrodesulfurization

Liu, Huan; Li, Yanpeng; Yin, Changlong; Wu, Yilan; Chai, Yong‐Ming; Dong, Daoming; Li, Xuehui

doi:10.1016/j.apcatb.2016.06.004

Cited by 87 publications

(43 citation statements)

References 50 publications

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“…Due to the importance of HDS and HDN processes and also economical-environmental issues associated with it, tremendous efforts have been devoted to the development of novel catalysts with high yields. NiMo and CoMo catalysts on various supports are among the most studied catalysts (Zdražil 2003;Yamamoto et al 2007;Vonortas and Papayannakos 2014;Bui et al 2015;Klimov et al 2016;Liu et al 2016;Zepeda et al 2016;Escobar et al 2017;Hajjar et al 2017a, b;Maximov et al 2017;Xu et al 2017;Zhou et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Comparison of performance of Ni–Mo/γ-alumina catalyst in HDS and HDN reactions of main distillate fractions

2019

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A bimetallic nickel-molybdenum catalyst supported on γ-alumina was synthesized by the two-step incipient wetness impregnation technique. The activity of the prepared Ni-Mo/γ-alumina catalyst was evaluated in a down flow fixed-bed microreactor. In this way, hydrodesulfurization (HDS) and hydrodenitrogenation (HDN) reactions of the main distillate fractions of crude oil were assessed. XRD, SEM, TPR, ICP-OES, BET-BJH and nitrogen adsorption/desorption methods were used for characterizing the synthesized Ni-Mo/γ-alumina catalyst. The active metals with Ni/Mo mass ratio of 0.23 and total metal of 13.7 wt% were loaded on the support, similar to the commercial industrial catalyst. The performance tests were conducted at 3.0 MPa (for light naphtha and heavy naphtha) and at 4.5 MPa (for kerosene and gas oil). The results revealed that the total sulfur conversion of the light naphtha, heavy naphtha, kerosene and gas oil fractions was 98.3%, 95%, 91.7% and 90.1% (after 24 h), respectively.

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Section: Introductionmentioning

confidence: 99%

Comparison of performance of Ni–Mo/γ-alumina catalyst in HDS and HDN reactions of main distillate fractions

2019

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“…Vonortas and Papayannakos (2014) studied the effect of free fatty acids on the HDS activity of Co-Mo/γ-Al 2 O 3 on atmospheric heavy gas oil. An ordered mesoporous NiMo-Al 2 O 3 catalyst was prepared by Liu et al (2016) for HDS of dibenzothiophene and they reported the Ni/Mo molar ratio of 1:1 for high HDS activity. Klimov et al (2016) prepared a CoNiMo/ Al 2 O 3 catalyst for deep HDT of vacuum gas oil and found that the catalyst with 1.8% Co, 1.2% Ni and 10% Mo has the highest activity in hydrotreating of vacuum gas oil.…”

Section: Introductionmentioning

confidence: 99%

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

Behnejad

Abdouss

Tavasoli

2019

Braz. J. Chem. Eng.

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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.

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“…The successful hydrotreating (HDT) catalysts are composed of the active phase and the catalyst support, where NiMo (Escobar et al 2017;Liu et al 2016;Xu et al 2017;Zepeda et al 2016;Zhou et al 2017) and CoMo (Bui et al 2015;Khorami and Kalbasi 2011;Vonortas and Papayannakos 2014;Zdražil 2003) have been the most studied active phases. Liu et al (2016) studied the HDS of dibenzothiophene over ordered mesoporous NiMo/Al 2 O 3 and reported that high HDS activity was observed for the Ni/Mo molar ratio of 1:1. Saih et al (2005) studied the ultra-deep HDS of dibenzothiophene over NiMo/TiO 2 -Al 2 O 3 catalysts where the NiMo sulfide was supported over TiO 2 -coated Al 2 O 3 .…”

Section: Introductionmentioning

confidence: 99%

Effect of graphene functionalizing on the performance of NiMo/graphene in HDS and HDN reactions

2019

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In this research, to remove sulfur and nitrogen compounds from heavy naphtha, various nanocatalysts were prepared through supporting NiMo over nanoporous graphene and evaluated in hydrodesulfurization and hydrodenitrogenation reactions. The nanoporous graphene was initially functionalized in order to facilitate the metal being loaded on it. Three different methods were used to functionalize the nanoporous graphene. The NiMo/nanoporous graphene nanocatalysts were characterized by field emission scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, inductively coupled plasma optical emission spectrometry, temperature-programmed reduction, nitrogen adsorption-desorption isotherms and transmission electron microscopy techniques. Catalyst performance was evaluated in terms of conversions of sulfur, mercaptans (R-SH) and nitrogen compounds. It was found that the functionalized nanoporous graphene support could significantly enhance the catalytic performance in comparison with the industrial NiMo/alumina catalyst. Among the functionalized graphene supports, amine-functionalized graphene exhibited the best results. By using NiMo supported over amine-functionalized graphene, the conversions of total sulfur and R-SH reached 97.8% and 98.1%, respectively.

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One-pot synthesis of ordered mesoporous NiMo-Al 2 O 3 catalysts for dibenzothiophene hydrodesulfurization

Cited by 87 publications

References 50 publications

Comparison of performance of Ni–Mo/γ-alumina catalyst in HDS and HDN reactions of main distillate fractions

Comparison of performance of Ni–Mo/γ-alumina catalyst in HDS and HDN reactions of main distillate fractions

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

Effect of graphene functionalizing on the performance of NiMo/graphene in HDS and HDN reactions

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