Effect of alumina and silica-alumina supported NiMo catalysts on the properties of asphaltenes during hydroprocessing of heavy petroleum

Carolina Leyva, Jorge Ancheyta, Guillermo Centeno

Research output: Contribution to conferencePaper

12 Citations (Scopus)

Abstract

© 2014 Published by Elsevier Ltd. (Figure Presented) Asphaltenes were precipitated from a heavy residue and from its hydrotreated products at constant pressure, liquid-hourly space-velocity and hydrogen-to-oil ratio (100 kg/cm2, 0.25 h-1, and 5000 ft3/bbl, respectively). The effect of reaction temperature was studied in the range of 380-410°C. The experiments were carried out in a two fixed-bed reactor unit. The first test used a NiMo/γ-Al2O3catalyst and the second test a NiMo/SiO2-Al2O3catalyst. It was observed that the molecules of asphaltenes formed after reaction from the NiMo/SiO2-Al2O3catalyst are smaller in size and less concentrated in metals than those originated from NiMo/γ-Al2O3catalyst, which are more concentrated in nitrogen and the asphaltenes structure is more aromatic. The NiMo/SiO2-Al2O3catalyst enhances metal removal in liquid products.
Original languageAmerican English
Pages111-117
Number of pages7
DOIs
StatePublished - 15 Dec 2014
EventFuel -
Duration: 15 Dec 2014 → …

Conference

ConferenceFuel
Period15/12/14 → …

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Asphaltenes
Aluminum Oxide
Petroleum
Catalyst supports
Silicon Dioxide
Alumina
Crude oil
Silica
Metals
Liquids
Hydrogen
Oils
Nitrogen
Molecules
Experiments
Temperature

Cite this

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title = "Effect of alumina and silica-alumina supported NiMo catalysts on the properties of asphaltenes during hydroprocessing of heavy petroleum",
abstract = "{\circledC} 2014 Published by Elsevier Ltd. (Figure Presented) Asphaltenes were precipitated from a heavy residue and from its hydrotreated products at constant pressure, liquid-hourly space-velocity and hydrogen-to-oil ratio (100 kg/cm2, 0.25 h-1, and 5000 ft3/bbl, respectively). The effect of reaction temperature was studied in the range of 380-410°C. The experiments were carried out in a two fixed-bed reactor unit. The first test used a NiMo/γ-Al2O3catalyst and the second test a NiMo/SiO2-Al2O3catalyst. It was observed that the molecules of asphaltenes formed after reaction from the NiMo/SiO2-Al2O3catalyst are smaller in size and less concentrated in metals than those originated from NiMo/γ-Al2O3catalyst, which are more concentrated in nitrogen and the asphaltenes structure is more aromatic. The NiMo/SiO2-Al2O3catalyst enhances metal removal in liquid products.",
author = "Carolina Leyva and Jorge Ancheyta and Guillermo Centeno",
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Effect of alumina and silica-alumina supported NiMo catalysts on the properties of asphaltenes during hydroprocessing of heavy petroleum. / Leyva, Carolina; Ancheyta, Jorge; Centeno, Guillermo.

2014. 111-117 Paper presented at Fuel, .

Research output: Contribution to conferencePaper

TY - CONF

T1 - Effect of alumina and silica-alumina supported NiMo catalysts on the properties of asphaltenes during hydroprocessing of heavy petroleum

AU - Leyva, Carolina

AU - Ancheyta, Jorge

AU - Centeno, Guillermo

PY - 2014/12/15

Y1 - 2014/12/15

N2 - © 2014 Published by Elsevier Ltd. (Figure Presented) Asphaltenes were precipitated from a heavy residue and from its hydrotreated products at constant pressure, liquid-hourly space-velocity and hydrogen-to-oil ratio (100 kg/cm2, 0.25 h-1, and 5000 ft3/bbl, respectively). The effect of reaction temperature was studied in the range of 380-410°C. The experiments were carried out in a two fixed-bed reactor unit. The first test used a NiMo/γ-Al2O3catalyst and the second test a NiMo/SiO2-Al2O3catalyst. It was observed that the molecules of asphaltenes formed after reaction from the NiMo/SiO2-Al2O3catalyst are smaller in size and less concentrated in metals than those originated from NiMo/γ-Al2O3catalyst, which are more concentrated in nitrogen and the asphaltenes structure is more aromatic. The NiMo/SiO2-Al2O3catalyst enhances metal removal in liquid products.

AB - © 2014 Published by Elsevier Ltd. (Figure Presented) Asphaltenes were precipitated from a heavy residue and from its hydrotreated products at constant pressure, liquid-hourly space-velocity and hydrogen-to-oil ratio (100 kg/cm2, 0.25 h-1, and 5000 ft3/bbl, respectively). The effect of reaction temperature was studied in the range of 380-410°C. The experiments were carried out in a two fixed-bed reactor unit. The first test used a NiMo/γ-Al2O3catalyst and the second test a NiMo/SiO2-Al2O3catalyst. It was observed that the molecules of asphaltenes formed after reaction from the NiMo/SiO2-Al2O3catalyst are smaller in size and less concentrated in metals than those originated from NiMo/γ-Al2O3catalyst, which are more concentrated in nitrogen and the asphaltenes structure is more aromatic. The NiMo/SiO2-Al2O3catalyst enhances metal removal in liquid products.

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DO - 10.1016/j.fuel.2014.08.023

M3 - Paper

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EP - 117

ER -