Study on ex-situ and in-situ bentonite synergistic catalytic mechanisms in heavy oil aquathermolysis reaction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F25%3A00382986" target="_blank" >RIV/68407700:21110/25:00382986 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.molliq.2025.127391" target="_blank" >https://doi.org/10.1016/j.molliq.2025.127391</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.molliq.2025.127391" target="_blank" >10.1016/j.molliq.2025.127391</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Study on ex-situ and in-situ bentonite synergistic catalytic mechanisms in heavy oil aquathermolysis reaction

Popis výsledku v původním jazyce

In-situ catalytic aquathermolysis has become an important method for heavy oil recovery, but the mechanism of action of ex-situ catalysts in the reservoir environment is not yet clear. This work investigates the mechanism of synergistic catalysis of heavy oil aquathermolysis reaction using ex-situ catalysts and in-situ minerals in reservoirs. In the presence of hydrogen donors, the effects of oleic acid salt ex-situ catalysts containing Mn, Co, Ni, Cu, Zn, Cr, and Fe, reservoir minerals (represented by clay), and oleic acid salt and reservoir mineral composites on heavy oil aquathermolysis were evaluated separately. Comparative analysis shows that the reaction effect of oleate-clay composite catalysis is better than the other two, and the viscosity of heavy oil is the lowest after the reaction. This indicates that the ex-situ catalyst will synergistically catalyze the aquathermolysis reaction of heavy oil with reservoir minerals after entering the reservoir. The results show that the properties of heavy crude oil are significantly improved, with a viscosity reduction rate of up to 84 % and a maximum pour point reduction of 17.0 °C. The light components in heavy oil increase significantly, while the content of heavy components decreases. The type and content of polar components in the aqueous phase changes after the reaction, indicating that the reaction can promote the conversion of polar components in heavy oil into water-soluble substances, thereby removing them from heavy oil and improving its quality. Based on this understanding, a series of model compounds were selected according to the structure of resin and asphaltene in heavy oil, and the mechanism of this aquathermolysis reaction was explored, providing rich experimental and theoretical basis for related research in this field.

Název v anglickém jazyce

Study on ex-situ and in-situ bentonite synergistic catalytic mechanisms in heavy oil aquathermolysis reaction

Popis výsledku anglicky

In-situ catalytic aquathermolysis has become an important method for heavy oil recovery, but the mechanism of action of ex-situ catalysts in the reservoir environment is not yet clear. This work investigates the mechanism of synergistic catalysis of heavy oil aquathermolysis reaction using ex-situ catalysts and in-situ minerals in reservoirs. In the presence of hydrogen donors, the effects of oleic acid salt ex-situ catalysts containing Mn, Co, Ni, Cu, Zn, Cr, and Fe, reservoir minerals (represented by clay), and oleic acid salt and reservoir mineral composites on heavy oil aquathermolysis were evaluated separately. Comparative analysis shows that the reaction effect of oleate-clay composite catalysis is better than the other two, and the viscosity of heavy oil is the lowest after the reaction. This indicates that the ex-situ catalyst will synergistically catalyze the aquathermolysis reaction of heavy oil with reservoir minerals after entering the reservoir. The results show that the properties of heavy crude oil are significantly improved, with a viscosity reduction rate of up to 84 % and a maximum pour point reduction of 17.0 °C. The light components in heavy oil increase significantly, while the content of heavy components decreases. The type and content of polar components in the aqueous phase changes after the reaction, indicating that the reaction can promote the conversion of polar components in heavy oil into water-soluble substances, thereby removing them from heavy oil and improving its quality. Based on this understanding, a series of model compounds were selected according to the structure of resin and asphaltene in heavy oil, and the mechanism of this aquathermolysis reaction was explored, providing rich experimental and theoretical basis for related research in this field.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Molecular Liquids

ISSN

0167-7322

e-ISSN

1873-3166

Svazek periodika

427

Číslo periodika v rámci svazku

127391

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-105000216166