Selective hydrocracking of pyrolysis fuel oil into benzene, toluene and xylene over CoMo/beta zeolite catalyst

Upare, Dipali P.; Park, S.; Kim, M.S.; Jeon, Young Pyo; Kim, J.; Lee, D.; Lee, J.; Chang, Hsin‐Chiu; Choi, Seung Kang; Choi, Won‐Mook; Park, Y.-K.; Lee, C.W.

doi:10.1016/j.jiec.2016.11.004

Cited by 60 publications

(36 citation statements)

References 27 publications

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“…Similar results were described by Upare et al [16] during the tetralin HCK using a CoMo (0.5)/Beta catalyst. When the temperature was increased from 340 to 380 °C, the HCK yield was also increased, reaching a plateau at 380 °C.…”

Section: Effect Of the Experimental Conditions On The Hck Yield And Bsupporting

confidence: 89%

“…As for Upare et al [16], they used CoMo (0.5)/Beta (β = SiO 2 /Al 2 O 3 of 25) for the selective hydrocracking of a low-boiling-point fraction of a pyrolysis fuel oil (PFO) [17] for obtaining an enriched MAH fraction such as BTX, using a fixed-bed reactor system. The best experimental conditions for producing the highest MAH yield of 54.8% at 99.1% conversion of the PFO fraction were 370 °C, 8 MPa, H 2 / feed (m 3 /m 3 ) of 1250 and LHSV of 0.2 h −1 .…”

Section: Introductionmentioning

confidence: 99%

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Effect of the experimental conditions on BTX formation from hydrotreated light cycle oil

et al. 2020

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The study of a light cycle oil (LCO) upgrading alternative involving hydrotreating and hydrocracking/transalkylation procedures for obtaining a benzene, toluene and xylene (BTX) enriched fraction is presented. The research work was focused on the effect of the experimental conditions on the hydrocracking of an hydrotreated light cycle oil (HDT LCO) in order to produce the highest amounts of BTX, when the catalysts consisted of a mixture (50/50 in weight) of nickel-molybdenum on alumina (NiMo/Al 2 O 3) and ZSM-5 materials (NiMo/ZSM-5 (50)). It was found that 7.4 MPa, up to 375 °C, LHSV of 1.2 h −1 and a H 2 /Oil value of 442 m 3 /m 3 were the optimal experimental conditions for producing an enriched BTX fraction (31%). In order to facilitate the analysis, the study was carried out considering four types of hydrocarbons as lumps for the feed and HCK products: light hydrocarbons (LHC) composed by C4-C7 non-aromatic compounds, BTX, middle hydrocarbons (MHC) consisting of C7-C10 paraffins and isoparaffins, alkylbenzenes, tetralin and naphthalene derivatives and a small amount of high molecular weight hydrocarbons (HHC). Based on this description, HDT LCO used as feedstock for the hydrocracking (HCK) procedure, presents a 99% of a MHC fraction. The HCK conversion, BTX selectivity and yields were obtained from the chromatographic analysis of the products. A simple kinetic model considering only the MHC conversion was carried out. The obtained activation energy confirmed the endothermic nature of the HCK process. The activity decay of the catalytic mixture was also studied by varying the time on stream.

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Section: Effect Of the Experimental Conditions On The Hck Yield And Bsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Effect of the experimental conditions on BTX formation from hydrotreated light cycle oil

et al. 2020

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“…Benzene is produced from hydrocarbons by energy intensive catalytic conversion techniques. At present, different experimental studies are exploring the development of efficient catalysts for high feed conversion and yield of benzene: Upare, et al [23] reported cobalt promoted Mo/β zeolite catalyst using a co-impregnation method and studied the effect of cobalt loading on catalytic activity. Perez-Uresti, et al [24] worked on energy saving, economic analysis and environmental assessment in terms of CO 2 emission for the production of benzene from shale gas via direct methane aromatization (DMA).…”

Section: Benzene Productionmentioning

confidence: 99%

Energy and CO2 management for chemical and related industries: issues, opportunities and challenges

Vooradi

Anne²,

Tula

et al. 2019

BMC Chem Eng

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This paper gives a brief review of energy and CO 2 emissions related topics resulting from the chemical and related industries. The main issues, challenges and opportunities are highlighted together with perspectives of process alternatives for more efficient energy consumption and CO 2 emission management. Analysis of the data indicate that not all available energy resources are being utilized efficiently, while the energy resources causing the largest emissions of CO 2 are being used in the largest amounts. Also, the chemical and related industries are among the largest consumers of energy, indicating that solutions for reduction of energy consumption and CO 2 emissions in these industries need to be investigated. Information on promising alternatives for reduction of energy consumption and CO 2 emissions are collected and a selection of them are evaluated. Also, two specific case studies involving energy intensive separation operations replaced by recently developed technologies that may achieve significant reductions in energy consumption, CO 2 emissions and total annualized costs are presented. Through these examples issues of energy need versus CO 2 neutral design, sustainable conversion, retrofit design, and process intensification for chemical and related industries are highlighted.

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“…The most widely-used industrial catalysts are nowadays activated carbon-based (AC) or zeolite-supported materials, with different noble metals [1][2][3][4][5]. These catalysts can ensure high product selectivity and efficient conversion, despite the slower reaction rate, which is due to diffusion limitation originated from their microporous structures [6,7].…”

Section: Introductionmentioning

confidence: 99%

Fine-tuning the catalytic activity by applying nitrogen-doped carbon nanotubes as catalyst supports for the hydrogenation of olefins

Sikora

Kiss

Göndör

et al. 2019

Reac Kinet Mech Cat

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Nitrogen-free multi-wall carbon nanotubes (MWCNTs) and N-doped bamboo-like carbon nanotubes (BCNTs) were synthesized by using catalytic vapor deposition (CVD) and used as catalyst support materials. Pd, Rh, Ru, and Ir have been deposited onto the nanotubes to achieve metal/nanotube catalysts. The catalytic activity of the samples was fine-tuned by changing the type of support. BCNT supported Pd and Rh (Pd/BCNT, Rh/MWCNT) catalysts were found to be the most active for liquid phase hydrogenation of octadecene amongst these samples. The initial olefin hydrogenation rate of the Pd/BCNT sample was slightly higher than the corresponding MWCNT-supported catalyst. Based on the hydrogenation reaction, the performance of these catalyst had been ranked as follows: Pd/BCNT ≈ Rh/MWCNT > Pd/ MWCNT > Rh/BCNT > > Ir/MWCNT > Ru/BCNT > Ir/BCNT > Ru/MWCNT. The structural properties of chemisorbed Pd on MWCNT and N-BCNT were also characterized by means of computational chemical methods in order to shed some light on the nature of metal binding properties of N-doped and undoped surfaces. The calculations shown preference towards the edges of the surfaces which is in good agreement with the experimental findings.

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Selective hydrocracking of pyrolysis fuel oil into benzene, toluene and xylene over CoMo/beta zeolite catalyst

Cited by 60 publications

References 27 publications

Effect of the experimental conditions on BTX formation from hydrotreated light cycle oil

Effect of the experimental conditions on BTX formation from hydrotreated light cycle oil

Energy and CO2 management for chemical and related industries: issues, opportunities and challenges

Fine-tuning the catalytic activity by applying nitrogen-doped carbon nanotubes as catalyst supports for the hydrogenation of olefins

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