Deactivation of HDS catalysts in deoxygenation of vegetable oils

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62243136%3A_____%2F11%3A%230000184" target="_blank" >RIV/62243136:_____/11:#0000184 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0926860X10007520" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0926860X10007520</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Deactivation of HDS catalysts in deoxygenation of vegetable oils

Popis výsledku v původním jazyce

Several rapeseed oils with different degree of upgrading were used as feedstocks for deoxygenation over sulfided CoMo/gama-Al2O3 catalyst. The rapeseed oil samples differed in the concentration of inorganic impurities, water, free fatty acids and phospholipids. The catalytic experiments were carried out in a fixed bed reactor at constant reaction conditions (310 °C,WHSV=2h-1, hydrogen pressure 3,5 MPa). Refined rapeseed oils were converted to hydrocarbons more efficiently than neat rapeseed oil, trap grease and waste oil. The high concentration of phospholipids in trap grease was the most likely cause of catalyst deactivation by coking. Decomposition of phospholipids as well as oligomerization of rapeseed oil by phosphoric acid at 310 °C was confirmedby separate laboratory experiments. The high concentration of alkalis in waste rapeseed oil was the main reason for increased deactivation in comparison with neat rapeseed oil. Sulfur removal from catalyst active sites affected adversely

Název v anglickém jazyce

Deactivation of HDS catalysts in deoxygenation of vegetable oils

Popis výsledku anglicky

Several rapeseed oils with different degree of upgrading were used as feedstocks for deoxygenation over sulfided CoMo/gama-Al2O3 catalyst. The rapeseed oil samples differed in the concentration of inorganic impurities, water, free fatty acids and phospholipids. The catalytic experiments were carried out in a fixed bed reactor at constant reaction conditions (310 °C,WHSV=2h-1, hydrogen pressure 3,5 MPa). Refined rapeseed oils were converted to hydrocarbons more efficiently than neat rapeseed oil, trap grease and waste oil. The high concentration of phospholipids in trap grease was the most likely cause of catalyst deactivation by coking. Decomposition of phospholipids as well as oligomerization of rapeseed oil by phosphoric acid at 310 °C was confirmedby separate laboratory experiments. The high concentration of alkalis in waste rapeseed oil was the main reason for increased deactivation in comparison with neat rapeseed oil. Sulfur removal from catalyst active sites affected adversely

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

—

Projekt

<a href="/cs/project/FT-TA3%2F074" target="_blank" >FT-TA3/074: *Využití rostlinných olejů a glycerinu pro výrobu motorových paliv.</a><br>

Návaznosti

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

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Applied Catalysis A: General

ISSN

0926-860X

e-ISSN

—

Svazek periodika

Vol. 394

Číslo periodika v rámci svazku

—

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

9-17

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—