Hydroconversion of sunflower oil to fatty alcohols and hydrocarbons using CuZn and CuZn-HBEA-based catalysts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F23%3A43924579" target="_blank" >RIV/60461373:22320/23:43924579 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22350/23:43924579

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0920586122002826?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0920586122002826?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cattod.2022.07.009" target="_blank" >10.1016/j.cattod.2022.07.009</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hydroconversion of sunflower oil to fatty alcohols and hydrocarbons using CuZn and CuZn-HBEA-based catalysts

Popis výsledku v původním jazyce

One-pot hydroprocessing of vegetable oils to the corresponding fatty alcohols or long-chain alkanes is highly demanded. In this work, we present results on the hydroconversion of sunflower oil in a batch stirred reactor using either CuZn oxide catalysts with different Cu/Zn ratios prepared by the calcination of hydroxycarbonate precursors or bifunctional catalysts prepared by mixing the CuZn oxides with a commercial HBEA zeolite. The characteristics of the CuZn samples were determined by N2 adsorption, N2O chemisorption, and XRD analysis. The influence of CuZn catalysts composition, reaction temperature (210–270 °C), hydrogen pressure (6.0–14.0 MPa), and catalyst loading on the conversion of sunflower oil was investigated. Under optimized conditions of 250 °C and 10 MPa H2, a nearly 89 % octadecanol yield was obtained after 3 h of sunflower oil hydroconversion using a catalyst with the Cu/Zn atomic ratio of 1. This Cu1Zn catalyst also confirmed its high stability in the production of fatty alcohols without any loss in activity after its reuse in three consecutive reaction cycles. The addition of HBEA to the Cu1Zn catalyst under the same reaction conditions led to the formation of hydrocarbons. It allowed concluding that metallic Cu species in the bifunctional catalysts were active sites for the hydrogenolysis of triglycerides to fatty alcohols and double bonds hydrogenation, while the acidic sites of HBEA were responsible for the dehydration of the produced alcohols affording hydrocarbons. As a result, n-octadecane with the yield of 65 % and a mixture of C18 alkenes and isoalkanes with the yield of 18 % were produced over the CuZn-HBEA catalyst under the same reaction conditions. It was shown that the addition of Pd to HBEA led to an increase in sunflower conversion from 90 % to 97 %. © 2022 Elsevier B.V.

Název v anglickém jazyce

Hydroconversion of sunflower oil to fatty alcohols and hydrocarbons using CuZn and CuZn-HBEA-based catalysts

Popis výsledku anglicky

One-pot hydroprocessing of vegetable oils to the corresponding fatty alcohols or long-chain alkanes is highly demanded. In this work, we present results on the hydroconversion of sunflower oil in a batch stirred reactor using either CuZn oxide catalysts with different Cu/Zn ratios prepared by the calcination of hydroxycarbonate precursors or bifunctional catalysts prepared by mixing the CuZn oxides with a commercial HBEA zeolite. The characteristics of the CuZn samples were determined by N2 adsorption, N2O chemisorption, and XRD analysis. The influence of CuZn catalysts composition, reaction temperature (210–270 °C), hydrogen pressure (6.0–14.0 MPa), and catalyst loading on the conversion of sunflower oil was investigated. Under optimized conditions of 250 °C and 10 MPa H2, a nearly 89 % octadecanol yield was obtained after 3 h of sunflower oil hydroconversion using a catalyst with the Cu/Zn atomic ratio of 1. This Cu1Zn catalyst also confirmed its high stability in the production of fatty alcohols without any loss in activity after its reuse in three consecutive reaction cycles. The addition of HBEA to the Cu1Zn catalyst under the same reaction conditions led to the formation of hydrocarbons. It allowed concluding that metallic Cu species in the bifunctional catalysts were active sites for the hydrogenolysis of triglycerides to fatty alcohols and double bonds hydrogenation, while the acidic sites of HBEA were responsible for the dehydration of the produced alcohols affording hydrocarbons. As a result, n-octadecane with the yield of 65 % and a mixture of C18 alkenes and isoalkanes with the yield of 18 % were produced over the CuZn-HBEA catalyst under the same reaction conditions. It was shown that the addition of Pd to HBEA led to an increase in sunflower conversion from 90 % to 97 %. © 2022 Elsevier B.V.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

<a href="/cs/project/LTACH19017" target="_blank" >LTACH19017: Společný výzkum a vývoj inovativního katalytického zpracování a technologie pro účinnou přeměnu rostlinných olejů na čistá paliva</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Catalysis Today

ISSN

0920-5861

e-ISSN

1873-4308

Svazek periodika

424

Číslo periodika v rámci svazku

1.12.2023

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

"113841 (číslo článku)"

Kód UT WoS článku

001063039800001

EID výsledku v databázi Scopus

2-s2.0-85134803684