Nitrogen compounds characterization in atmospheric gas oil and light cycle oil from a blend of Mexican crudes

Laredo, Georgina C.; Leyva, Sara; Alvarez, Regina; Mares, Ma.Teresa; Castillo, Jesús; Cano, José L.

doi:10.1016/s0016-2361(02)00047-9

Cited by 115 publications

(64 citation statements)

References 23 publications

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“…Three different mass spectrometric ionization techniques have been proven powerful for ionizing these different types of nitrogen molecules according to their polarities [22]. Negative electrospray ionization (ESI negative) is selective for molecules susceptible to deprotonation, e.g., acids and pyrroles.…”

Section: Nitrogen Speciesmentioning

confidence: 99%

Characterization of Nitrogen and Sulfur Compounds in Hydrocracking Feedstocks by Fourier Transform Ion Cyclotron Mass Spectrometry

Al-Hajji

Muller

Koseoglu

2008

Oil & Gas Science and Technology - Rev. IFP

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-Characterization of Nitrogen and Sulfur Compounds in Hydrocracking Feedstocks by Fourier Transform Ion Cyclotron Mass Spectrometry -Advanced characterization of two heavy hydrocracking unit feedstocks, Heavy Vacuum Gas Oil (HVGO) and De-Metallized Oil (DMO), both derived from Arabian Light crude oil, was performed using High Resolution Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FT-ICR MS) to gain in-depth information on their aromaticity characteristics and heteroatom content, i.e., sulfur-and nitrogen-compounds. In

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Section: Nitrogen Speciesmentioning

confidence: 99%

Characterization of Nitrogen and Sulfur Compounds in Hydrocracking Feedstocks by Fourier Transform Ion Cyclotron Mass Spectrometry

Al-Hajji

Muller

Koseoglu

2008

Oil & Gas Science and Technology - Rev. IFP

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“…At present, the composition of various petroleum derivatives indicates the predominance of highly alkylated nitrogen compounds [25][26][27] . Furthermore, the nitrogen compounds inhibit the HDS process and other hydrotreating reactions due to its preferential adsorption on the same catalytic sites [28][29] .…”

Section: Introductionmentioning

confidence: 99%

ADSORPTION OF 4,6-DIMETHYLDIBENZOTHIOPHENE OVER Cu/ZrO2

Baeza¹,

Bassi²,

Villarroel³

et al. 2015

J. Chil. Chem. Soc.

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The adsorption of refractory sulfur molecule 4,6-Dimethyldibenzothiophene (4,6-DMDBT) over copper supported on zirconia, using different copper loadings (2-10% w/w) and a zirconia support with a high specific surface area, was studied. The results showed that the adsorption capacity of 4,6-DMDBT over Cu/ZrO 2 increased with copper content, reaching a maximum at around 8% Cu (0.58 mmol 4,6-DMDBT per gram of adsorbent). The results of characterizations with H 2 -TPR, Electrophoretic Migration, and XRD demonstrated that this Cu loading (8%) also corresponds to a maximum copper dispersion capacity for ZrO 2 support. Also, these absorbents showed considerable selectivity toward the adsorption of 4,6-DMDBT in a feed stream also containing Quinoline, decreasing adsorption capacity of 4,6-DMDBT by only 35%, despite both molecules being present in the same concentrations. The results of this work showed that desulfurization adsorption using Cu/ZrO 2 adsorbents can be an effective method to remove this type of refractory sulfur molecules, and an excellent alternative as a complementary process for deep desulfurization in the fuel industry.

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“…Separation of basic and non-basic nitrogen-containing compounds is difficult to carry out because of the low contents of nitrogen in Vacuum Gas Oils (< 4000 wt ppm) and the predominant presence of a complex hydrocarbon matrix. Solid phase extraction methods based on the use of silica [3][4][5][6][7][8][9][10], alumina [11,12] or ionexchange resin [13,15] as well as liquid/liquid extractions [6,7,11,[15][16][17][18] were described in literature to separate and highly concentrate the basic and non-basic nitrogen species present in petroleum cuts. Nevertheless, these methods are time-consuming, involve a large number of intermediate steps and present in most cases issues with lack of selectivity and/or nitrogen recovery.…”

Section: Analytical Characterization Of Vacuum Gas Oils and Hydrotreamentioning

confidence: 99%

Kinetic Modeling of Vacuum Gas Oil Hydrotreatment using a Molecular Reconstruction Approach

Charon-Revellin

Dulot

López-García

et al. 2010

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Résumé -Modélisation cinétique de l'hydrotraitement de distillats sous vide utilisant une approche de reconstruction moléculaire -Les Distillats Sous Vide (DSV) sont des coupes pétrolières lourdes (gamme de températures d'ébullition 350 à 550 °C) qui peuvent être valorisées en carburants (essence, gazole) par craquage catalytique ou par hydrocraquage. Un hydrotraitement est requis avant ces procédés de conversion afin d'éliminer les impuretés du DSV. De cette manière, le procédé d'hydrotraitement permet d'attendre les spécifications environnementales (teneur en soufre) ainsi que de prévenir l'empoisonnement par les composés azotés des catalyseurs de conversion. De manière à pouvoir développer un modèle cinétique basé sur une description moléculaire précise des DSV, des outils analytiques innovant et des techniques de reconstruction moléculaire ont été utilisés dans ce travail. Un modèle cinétique de regroupement utilisant une représentation de type Langmuir-Hinshelwood a été développé pour l'hydrodésaromatisation, l'hydrodésulfuration et l'hydrodésazotation des DSV. Ce modèle de regroupement a été appliqué de manière satisfaisante à des données expérimentales de prétraitement de charge DSV et a été capable de prédire les évolutions de concentration des espèces aromatiques, azotées et soufrées. Abstract -Kinetic Modeling of Vacuum Gas Oil Hydrotreatment using a Molecular Reconstruction Approach -Vacuum Gas Oils (VGO) are heavy petroleum cuts (boiling points ranging from 350 to 550°C) that can be transformed into valuable fuels (gasolines, diesels) by fluid catalytic cracking or hydrocracking. Prior to these conversion processes, hydrotreating is required in order to

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Nitrogen compounds characterization in atmospheric gas oil and light cycle oil from a blend of Mexican crudes

Cited by 115 publications

References 23 publications

Characterization of Nitrogen and Sulfur Compounds in Hydrocracking Feedstocks by Fourier Transform Ion Cyclotron Mass Spectrometry

Characterization of Nitrogen and Sulfur Compounds in Hydrocracking Feedstocks by Fourier Transform Ion Cyclotron Mass Spectrometry

ADSORPTION OF 4,6-DIMETHYLDIBENZOTHIOPHENE OVER Cu/ZrO2

Kinetic Modeling of Vacuum Gas Oil Hydrotreatment using a Molecular Reconstruction Approach

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