Relative Activity of Niobia-Supported CoMo Hydrodesulphurization Catalyst Prepared with NTA: A Kinetic Approach.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F18%3A00487812" target="_blank" >RIV/67985858:_____/18:00487812 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.catcom.2018.01.020" target="_blank" >http://dx.doi.org/10.1016/j.catcom.2018.01.020</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.catcom.2018.01.020" target="_blank" >10.1016/j.catcom.2018.01.020</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Relative Activity of Niobia-Supported CoMo Hydrodesulphurization Catalyst Prepared with NTA: A Kinetic Approach.

Popis výsledku v původním jazyce

A sulphide CoMo/Nb2O5 HDS catalyst was prepared for the first time using nitrilotriacetic acid (NTA) as complexing agent, where the impregnation solution consisted of NTA, cobalt carbonate and ammonium heptamolybdate. It contained neither NH4OH nor NO3 − ions. The hydrodesulphurization activity of the catalyst was tested using as model sulphur compound that of thiophene at 1.0 MPa and 400 °C. The ratio of activities (based on pseudo-first order kinetics) expressed in terms of the rate constant k, where the latter was estimated from specific reaction rate data per mass of catalyst, for the NTA-CoMo/Nb2O5 and CoMo/Nb2O5 catalysts was found to be 6.6. Thus, using NTA shifted CoMo/Nb2O5 system from a low activity catalyst (as observed in the literature) to a high activity catalyst worthwhile for further investigations (present results). The NTA-CoMo/Nb2O5 (SBET = 40 m2 g− 1) was more active than commercial CoMo/Al2O3 (SBET = 194 m2 g− 1) not only in terms of specific activity normalized per total surface area (mols m− 2 s− 1, 5.7 times larger) but also in terms of specific activity normalized per mass of catalyst sample (mols g− 1 s− 1, 1.2 times larger.

Název v anglickém jazyce

Relative Activity of Niobia-Supported CoMo Hydrodesulphurization Catalyst Prepared with NTA: A Kinetic Approach.

Popis výsledku anglicky

A sulphide CoMo/Nb2O5 HDS catalyst was prepared for the first time using nitrilotriacetic acid (NTA) as complexing agent, where the impregnation solution consisted of NTA, cobalt carbonate and ammonium heptamolybdate. It contained neither NH4OH nor NO3 − ions. The hydrodesulphurization activity of the catalyst was tested using as model sulphur compound that of thiophene at 1.0 MPa and 400 °C. The ratio of activities (based on pseudo-first order kinetics) expressed in terms of the rate constant k, where the latter was estimated from specific reaction rate data per mass of catalyst, for the NTA-CoMo/Nb2O5 and CoMo/Nb2O5 catalysts was found to be 6.6. Thus, using NTA shifted CoMo/Nb2O5 system from a low activity catalyst (as observed in the literature) to a high activity catalyst worthwhile for further investigations (present results). The NTA-CoMo/Nb2O5 (SBET = 40 m2 g− 1) was more active than commercial CoMo/Al2O3 (SBET = 194 m2 g− 1) not only in terms of specific activity normalized per total surface area (mols m− 2 s− 1, 5.7 times larger) but also in terms of specific activity normalized per mass of catalyst sample (mols g− 1 s− 1, 1.2 times larger.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA17-22490S" target="_blank" >GA17-22490S: Nové přípravy katalyzátorů pro klíčové hydrorafinační reakce</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Catalysis Communication

ISSN

1566-7367

e-ISSN

—

Svazek periodika

107

Číslo periodika v rámci svazku

MAR 10

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

62-67

Kód UT WoS článku

000427668400014

EID výsledku v databázi Scopus

2-s2.0-85040678960.