Selective hydrocracking of light cycle oil into high-octane gasoline over bi-functional catalysts

Cao, Zhengkai; Zhang, Xia; Chen, Xu; Huang, Xinlu; Wu, Ziming; Peng, Chong; Duan, Aijun

doi:10.1016/j.jechem.2020.04.055

Cited by 47 publications

(17 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The hydrocracking process of the HDT LCO was carried out at the following experimental condi-Beta) into BTX. And the mesoporous H-Y facilitated the conversion of large molecular-size C 11+ heavy aromatic compounds, which are too large to access the pores of H-Beta or H-ZSM.Cao et al[35] also used the CoMo/AY and NiMo/AY prepared catalyst for hydrocracking LCO and combined beds: first NiMo/AY and then CoMo/AY and vice versa. The experimental conditions for the two reactors (R1/R2) were: 385/400 °C, LHSV = 2.0/1.3 h −1 , total pressure = 7 MPa, H 2 /…”

mentioning

confidence: 99%

Effect of the catalyst in the BTX production by hydrocracking of light cycle oil

et al. 2021

View full text Add to dashboard Cite

Catalysts to produce the important petrochemicals like benzene, toluene, and xylene (BTX) from refinery feedstocks, like light cycle oil (LCO) are reviewed here by covering published papers using model mixtures and real feeds. Model compounds experiments like tetralin and naphthalene derivatives provided a 53–55% total BTX yield. Higher yields were never attained due to the inevitable gas formation and other C9+-alkylbenzenes formed. For tetralin, the best catalysts are those conformed by Ni, CoMo, NiMo, or NiSn over zeolite H-Beta. For naphthalene derivatives, the best catalysts were those conformed by W and NiW over zeolite H-Beta silylated. Real feeds produced a total BTX yield of up to 35% at the best experimental conditions. Higher yields were never reached due to the presence of other types of hydrocarbons in the feed which can compete for the catalytic sites. The best catalysts were those conformed by Mo, CoMo, or NiMo over zeolite H-Beta. Some improvements were obtained by adding ZSM-5 to the support or in mixtures with other catalysts.

show abstract

mentioning

confidence: 99%

Effect of the catalyst in the BTX production by hydrocracking of light cycle oil

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Similarly, the CuZnAl-LDO(N) sample exhibited two desorption peaks, one in the range of 300–400 °C and another in the range of 500–600 °C, which were attributed to moderate and strong acids, respectively. 40 These outcomes indicated extensive distribution of moderately and weakly acidic sites in the catalyst. Moreover, the existence of the acidic sites was related to the contribution of different metal oxides.…”

Section: Resultsmentioning

confidence: 99%

Combustion Products of Calcium Carbide Reused by Cu-Based Catalysts for Acetylene Carbonylation

et al. 2020

View full text Add to dashboard Cite

Sustainable development is a worldwide concern. This work mainly focuses on the reuse of the combustion products of calcium carbide and the influence of different kinds of copper on the acetylene carbonylation reaction. A series of catalysts were prepared by heating the precursors under various atmospheres (air, hydrogen, and nitrogen). The X-ray diffraction and the X-ray photoelectron spectroscopy have been analyzed regarding copper species composition and content in catalysts. The result of the Cu + -promoted reaction was in good agreement with the conducted density functional theory analysis, and we speculate that Cu + promotes the transfer of electrons in the reaction. Transmission electron microscopy and elemental mapping evaluation confirmed the difference in Cu dispersion. Characterization of catalysts using temperature programmed desorption and pyridine Fourier-transform infrared revealed differences in their acidity. Acidity was found to be favorable for acetylene carbonylation. Selectivity and yield of the CuAlZn-LDO(N) catalyst at 225 °C were 73 and 70%, respectively, and the catalyst showed good stability over two consecutive cycles of reuse.

show abstract

“…34 There are several studies concerning NiMoS-USY or modified USY reported for heavy vacuum gas/light cycle oil, hydrodesulfurization, and other fundamental studies. [35][36][37][38][39] However, to the best of our knowledge, there is no studies investigating NiMoS over USY with various SAR for lignin/lignin dimer hydrotreatment. Herein, we report the catalytic activity of NiMoS over a series of ultra-stable Y zeolites with varying silica/alumina ratio (SAR) using dimer model compounds mimicking lignin linkages (C-O and C-C) shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Hydrotreatment of lignin dimers over NiMoS-USY: effect of silica/alumina ratio

Salam

Cheah

et al. 2021

Sustainable Energy Fuels

View full text Add to dashboard Cite

show abstract

Selective hydrocracking of light cycle oil into high-octane gasoline over bi-functional catalysts

Cited by 47 publications

References 40 publications

Effect of the catalyst in the BTX production by hydrocracking of light cycle oil

Effect of the catalyst in the BTX production by hydrocracking of light cycle oil

Combustion Products of Calcium Carbide Reused by Cu-Based Catalysts for Acetylene Carbonylation

Hydrotreatment of lignin dimers over NiMoS-USY: effect of silica/alumina ratio

Contact Info

Product

Resources

About