The water gas shift reaction: Catalysts and reaction mechanism

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F21%3A43920390" target="_blank" >RIV/60461373:22320/21:43920390 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0016236120328131?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0016236120328131?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.fuel.2020.119817" target="_blank" >10.1016/j.fuel.2020.119817</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The water gas shift reaction: Catalysts and reaction mechanism

Popis výsledku v původním jazyce

The water gas shift reaction (WGSR) is a moderately exothermic reaction between carbon monoxide and steam to form carbon dioxide and hydrogen. In typical industrial applications, the WGSR is conducted as a two stage process. The high temperature stage, conducted over an iron based catalyst in the temperature range 320 – 450 °C. The low temperature stage, conducted over copper-based catalysts in the temperature range 150 – 250 °C. There is no universally accepted reaction mechanism for the WGSR. The accepted mechanism depends on whether it is being studied for HT or LT as well as on the catalyst type. The redox mechanism usually accepted for the HT-WGSR and, depending on the active metal, also for the LT-WGSR as well as the mechanism involving formate and/or carboxyl species for the LT-WGSR are discussed. Catalyst deactivation presents a limitation on the utilization of different catalysts for the WGSR. The main causes of catalysts deactivation are (a) thermal sintering, (b) sulfur poisoning, (c) chloride poisoning. In addition to the traditionally used Fe-based catalysts for the HT-WGSR and Cu-based catalysts for the LT-WGSR, other catalysts such as nickel, cobalt, molybdenum, platinum, gold, rhodium, and ruthenium are active for the WGSR. Catalyst preparation and pre-treatment steps play a crucial role in catalyst activity.

Název v anglickém jazyce

The water gas shift reaction: Catalysts and reaction mechanism

Popis výsledku anglicky

The water gas shift reaction (WGSR) is a moderately exothermic reaction between carbon monoxide and steam to form carbon dioxide and hydrogen. In typical industrial applications, the WGSR is conducted as a two stage process. The high temperature stage, conducted over an iron based catalyst in the temperature range 320 – 450 °C. The low temperature stage, conducted over copper-based catalysts in the temperature range 150 – 250 °C. There is no universally accepted reaction mechanism for the WGSR. The accepted mechanism depends on whether it is being studied for HT or LT as well as on the catalyst type. The redox mechanism usually accepted for the HT-WGSR and, depending on the active metal, also for the LT-WGSR as well as the mechanism involving formate and/or carboxyl species for the LT-WGSR are discussed. Catalyst deactivation presents a limitation on the utilization of different catalysts for the WGSR. The main causes of catalysts deactivation are (a) thermal sintering, (b) sulfur poisoning, (c) chloride poisoning. In addition to the traditionally used Fe-based catalysts for the HT-WGSR and Cu-based catalysts for the LT-WGSR, other catalysts such as nickel, cobalt, molybdenum, platinum, gold, rhodium, and ruthenium are active for the WGSR. Catalyst preparation and pre-treatment steps play a crucial role in catalyst activity.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Fuel

ISSN

0016-2361

e-ISSN

—

Svazek periodika

288

Číslo periodika v rámci svazku

Neuveden

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

16

Strana od-do

"březen"

Kód UT WoS článku

000607052500002

EID výsledku v databázi Scopus

2-s2.0-85097048345