Selective ring opening of naphthenes: From mechanistic studies with a model feed to the upgrading of a hydrotreated light cycle oil

Calemma, Vincenzo; Ferrari, Marco; Rabl, Sandra; Weitkamp, Jens

doi:10.1016/j.fuel.2013.04.055

Cited by 54 publications

(53 citation statements)

References 35 publications

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“…[2][3][4] LCO mainly consists of aromatic compounds with two rings, therefore, decalin can be considered as a model molecule. 5 Calemma et al 6 reported that the results obtained in the catalytic hydroconversion of desulfurized and dearomatized LCOs are in agreement with those obtained when using decalin as a model molecule.…”

Section: Introductionsupporting

confidence: 54%

Influence of rhodium content on the behavior of Rh/SiO₂–Al₂O₃catalysts for selective ring opening of decalin

et al. 2017

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Section: Introductionsupporting

confidence: 54%

Influence of rhodium content on the behavior of Rh/SiO₂–Al₂O₃catalysts for selective ring opening of decalin

et al. 2017

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“…However, FCC diesel exhibits low cetane number (CN) and high aromatic content (Arribas and Martínez 2002). The unqualified diesel can cause incomplete combustion and the formation of undesirable emissions (Calemma et al 2013). For the aim of environment protection, production of clean diesel fuel is needed.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a highly efficient Pt/USY catalyst for hydrogenation and selective ring-opening reaction of tetralin

et al. 2018

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Ultrastable Y zeolite (USY)-supported Pt catalyst was prepared by gas-bubbling-assisted membrane reduction. The influence of reaction conditions and the metal and acid sites of catalysts on the catalytic performance of catalyst in hydrogenation and selective ring opening of tetralin, 1,2,3,4-tetrahydronaphthalene (THN), was studied. It was found that the optimal reaction conditions were at a temperature of 280°C, hydrogen pressure of 4 MPa, liquid hourly space velocity of 2 h-1 and H 2 /THN ratio of 750. Under these optimal conditions, a high conversion of almost 100% was achieved on the 0.3Pt/USY catalyst. XRD patterns and TEM images revealed that Pt particles were highly dispersed on the USY, favorable to the hydrogenation reaction of tetralin. Ammonia temperature-programmed desorption and Py-IR results indicated that the introduction of Pt can reduce the acid sites of USY, particularly the strong acid sites of USY. Thus, the hydrocracking reaction can be suppressed.

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“…LCO has the properties of high density, high aromatic content, and low hydrogen content in China, and it accounts for 30 % of the diesel. Catalytic hydrogenation technology can convert low‐value LCO into a high‐octane gasoline blending component, achieving the high‐value utilization of LCO . Therefore, in the area of LCO hydrotreating, the study of hydrogenation performance of the modified zeolite still needs to be investigated further.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of zeolite‐modified NiMo/Al₂O₃ catalysts and their hydrotreating performance for light cycled oil

Yao

Zhao

et al. 2018

Can J Chem Eng

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The performance of a widely used commercial catalyst, NiMo/Al 2 O 3 , might be not adequate to meet more stringent regulations for the fuel products; therefore, a lot of research has been devoted to improving its performance. In this study, three different modified zeolites were added in NiMo/Al 2 O 3 catalyst to investigate the selective improvement of the hydrodesulphurization (HDS) and hydrodenitrification (HDN) activity. The catalysts were characterized by N 2 adsorption, pyridine-infrared spectroscopy (IR), H 2 -temperature program reduction (H 2 -TPR), x-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM), and their catalytic activity was tested in the HDS and HDN of light cycle oil (LCO). Characterization results revealed that the catalyst surface area increased but the pore volume and average pore size decreased by adding modified zeolite. The activity evaluation result showed that the NiMo/MB catalyst had the highest activity and meanwhile decreased the final boiling point from 520.8 to 457 8C. The sulphur decreased by 97.65 % from 13 000 to 305 ppm and the nitrogen reduced by 99.74 % from 496 to 1.29 ppm in LCO hydrotreating, notably for NiMo/MB catalyst. The acid properties indicated that zeolite brought some strong and ultra-strong acidic sites, which might favour a cracking reaction and reduce the liquid recovery yield. However, only 1.99 and 1.34 wt% of the LCO were cracked over the zeolite beta and zeolite modified beta respectively, indicating a slight cracking process. These results suggest that an added modified beta not only raised the quality of LCO distillation but also avoided the overcracking of hydrocarbons.

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Selective ring opening of naphthenes: From mechanistic studies with a model feed to the upgrading of a hydrotreated light cycle oil

Cited by 54 publications

References 35 publications

Influence of rhodium content on the behavior of Rh/SiO₂–Al₂O₃catalysts for selective ring opening of decalin

Influence of rhodium content on the behavior of Rh/SiO₂–Al₂O₃catalysts for selective ring opening of decalin

Preparation of a highly efficient Pt/USY catalyst for hydrogenation and selective ring-opening reaction of tetralin

Characteristics of zeolite‐modified NiMo/Al₂O₃ catalysts and their hydrotreating performance for light cycled oil

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Selective ring opening of naphthenes: From mechanistic studies with a model feed to the upgrading of a hydrotreated light cycle oil

Cited by 54 publications

References 35 publications

Influence of rhodium content on the behavior of Rh/SiO2–Al2O3catalysts for selective ring opening of decalin

Influence of rhodium content on the behavior of Rh/SiO2–Al2O3catalysts for selective ring opening of decalin

Preparation of a highly efficient Pt/USY catalyst for hydrogenation and selective ring-opening reaction of tetralin

Characteristics of zeolite‐modified NiMo/Al2O3 catalysts and their hydrotreating performance for light cycled oil

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Influence of rhodium content on the behavior of Rh/SiO₂–Al₂O₃catalysts for selective ring opening of decalin

Influence of rhodium content on the behavior of Rh/SiO₂–Al₂O₃catalysts for selective ring opening of decalin

Characteristics of zeolite‐modified NiMo/Al₂O₃ catalysts and their hydrotreating performance for light cycled oil