In Situ and Simultaneous Synthesis of a Novel Graphene-Based Catalyst for Deep Hydrodesulfurization of Naphtha

Hajjar, Zeinab; Kazemeini, Mohammad; Rashidi, Alimorad; Bazmi, Mansour

doi:10.1007/s10562-015-1563-y

Cited by 21 publications

(9 citation statements)

References 47 publications

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“…Shan et al (2015) have utilized NiW catalysts for selective HDS of FCC naphtha, and it was reported that better dispersion of W enables modification of the active phase which results in higher selective HDS. Also, various graphene-supported catalysts have been used for HDS of naphtha (Hajjar et al 2015(Hajjar et al , 2016(Hajjar et al , 2017a. MoS 2 supported over graphene was used for HDS of naphtha for which a simultaneous chemical exfoliation method was followed for preparing the catalyst by which high conversion was obtained (Hajjar et al 2015).…”

Section: Edited By Xiu-qin Zhumentioning

confidence: 99%

“…Also, various graphene-supported catalysts have been used for HDS of naphtha (Hajjar et al 2015(Hajjar et al , 2016(Hajjar et al , 2017a. MoS 2 supported over graphene was used for HDS of naphtha for which a simultaneous chemical exfoliation method was followed for preparing the catalyst by which high conversion was obtained (Hajjar et al 2015). Co-Mo supported over graphene oxide has been used for performing the naphtha HDS reaction in which metallic phases were impregnated onto the support via the hydrothermal and wetness impregnation method (Hajjar et al 2017a, b).…”

Section: Edited By Xiu-qin Zhumentioning

confidence: 99%

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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: Edited By Xiu-qin Zhumentioning

confidence: 99%

Section: Edited By Xiu-qin Zhumentioning

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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“…Therefore, the amount of sulfur and nitrogen compounds in fuels should be decreased to provide a clean environment. Hydrodesulfurization (HDS) (Gao et al, 2011;González-Cortés et al, 2006;Hajjar et al, 2015Hajjar et al, , 2016aHajjar et al, , 2017aHajjar et al, , 2017bHuirache-Acuña et al, 2012;Mendoza-Nieto et al, 2015;Miller et al, 2000;Shan et al, 2015) and hydrodenitrogenation (HDN) (Sundaramurthy et al, 2006;Zepeda et al, 2016) are the main processes considered for reducing the Total Sulfur (T.S.) and Total Nitrogen (T.N.)…”

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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“…Many various carbon structures with an expanded pore system, including graphene-based materials [13] and nanofibers [14], were developed. Among them, ordered mesoporous carbons (OMCs) seem to be ideal candidates to overcome foregoing drawbacks of ACs.…”

Section: Introductionmentioning

confidence: 99%

Oxidative Dehydrogenation of Ethylbenzene Over Poly(furfuryl alcohol)-Derived CMK-1 Carbon Replica

et al. 2016

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Poly(furfuryl alcohol) was introduced into a pore system of MCM-48 silica by the precipitation polycondensation of furfuryl alcohol (FA). The complete filling of the pores without the deposition of significant amounts of polymer on the external surface of MCM-48 was obtained at the FA/MCM-48 mass ratio close to 1.0. The final structure of carbon replica was formed by subsequent carbonization and extraction of SiO 2 with HF. The carbonization temperature strongly influenced the surface composition of the formed carbon replicas. The highest catalytic activity in the oxidative dehydrogenation of ethylbenzene was observed for CMK-1 with the highest concentration of phenol and carbonyl groups, recognized as active sites of the studied reaction.Graphical Abstract

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In Situ and Simultaneous Synthesis of a Novel Graphene-Based Catalyst for Deep Hydrodesulfurization of Naphtha

Cited by 21 publications

References 47 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

Oxidative Dehydrogenation of Ethylbenzene Over Poly(furfuryl alcohol)-Derived CMK-1 Carbon Replica

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