Metal-Support Interactions and C1 Chemistry: Transforming Pt-CeO2 into a Highly Active and Stable Catalyst for the Conversion of Carbon Dioxide and Methane

Author(s):  
Feng Zhang ◽  
Ramón A. Gutiérrez ◽  
Pablo Lustemberg ◽  
Zongyuan Liu ◽  
Ning Rui ◽  
...  

There is an ongoing search for materials which can accomplish the activation of two dangerous greenhouse gases like carbon dioxide and methane. In the area of C1 chemistry, the reaction between CO2 and CH4 to produce syngas, known as methane dry reforming (MDR), is attracting a lot of interest due to its green nature. On Pt(111), elevated temperatures are necessary to activate the reactants and massive deposition of carbon makes this metal surface ineffective for the MDR process. In this study, we show that strong metal-support interactions present in Pt/CeO2(111) and Pt/CeO2 powders lead to systems which can bind well CO2 and CH4 at room temperature and are excellent and stable catalysts for the MDR process at moderate temperature (500 ºC). The behaviour of these systems was studied using a combination of in-situ/operando methods which pointed to an active Pt-CeO2-x interface. In this interface, the oxide is far from being a passive spectator. It modifies the chemical properties of Pt, facilitating improved methane dissociation, and is directly involved in the adsorption and dissociation of CO2 making the MDR catalytic cycle possible. A comparison of the benefits gained by the use of an effective metal-oxide interface and those obtained by plain bimetallic bonding indicates that the former is much more important when optimizing the C1 chemistry associated with CO2 and CH4 conversion. The presence of elements with a different chemical nature at the metal-oxide interface opens the possibility for truly cooperative interactions in the activation of C-O and C-H bonds.

2020 ◽  
Author(s):  
Feng Zhang ◽  
Ramón A. Gutiérrez ◽  
Pablo Lustemberg ◽  
Zongyuan Liu ◽  
Ning Rui ◽  
...  

There is an ongoing search for materials which can accomplish the activation of two dangerous greenhouse gases like carbon dioxide and methane. In the area of C1 chemistry, the reaction between CO2 and CH4 to produce syngas, known as methane dry reforming (MDR), is attracting a lot of interest due to its green nature. On Pt(111), elevated temperatures are necessary to activate the reactants and massive deposition of carbon makes this metal surface ineffective for the MDR process. In this study, we show that strong metal-support interactions present in Pt/CeO2(111) and Pt/CeO2 powders lead to systems which can bind well CO2 and CH4 at room temperature and are excellent and stable catalysts for the MDR process at moderate temperature (500 ºC). The behaviour of these systems was studied using a combination of in-situ/operando methods which pointed to an active Pt-CeO2-x interface. In this interface, the oxide is far from being a passive spectator. It modifies the chemical properties of Pt, facilitating improved methane dissociation, and is directly involved in the adsorption and dissociation of CO2 making the MDR catalytic cycle possible. A comparison of the benefits gained by the use of an effective metal-oxide interface and those obtained by plain bimetallic bonding indicates that the former is much more important when optimizing the C1 chemistry associated with CO2 and CH4 conversion. The presence of elements with a different chemical nature at the metal-oxide interface opens the possibility for truly cooperative interactions in the activation of C-O and C-H bonds.


2020 ◽  
Vol 10 (19) ◽  
pp. 6468-6482 ◽  
Author(s):  
Kaixi Deng ◽  
Lili Lin ◽  
Ning Rui ◽  
Dimitriy Vovchok ◽  
Feng Zhang ◽  
...  

Metal–oxide interactions affect the catalytic properties of Co/CeO2 and can be used to control activity and selectivity.


ACS Catalysis ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 1613-1623
Author(s):  
Feng Zhang ◽  
Ramón A. Gutiérrez ◽  
Pablo G. Lustemberg ◽  
Zongyuan Liu ◽  
Ning Rui ◽  
...  

2020 ◽  
Vol 49 (9) ◽  
pp. 2994-3000
Author(s):  
Karan Chaudhary ◽  
Manoj Trivedi ◽  
D. T. Masram ◽  
Abhinav Kumar ◽  
Girijesh Kumar ◽  
...  

Catalytic conversion of CO2via hydrogenation using in situ gaseous H2 (granulated tin metal and concentrated HCl) to produce the formate salt (HCO2−) with turnover number (TON) values of 326 to 1.065 × 105 in 12 h to 48 h of reaction at 25 °C to 80 °C has been reported.


2020 ◽  
Vol 8 (32) ◽  
pp. 16582-16589 ◽  
Author(s):  
Xulei Sui ◽  
Lei Zhang ◽  
Junjie Li ◽  
Kieran Doyle-Davis ◽  
Ruying Li ◽  
...  

A facile in situ ion-exchanging strategy directly enhances metal–support interactions between Pt and support and promotes HER electrocatalytic performance in acidic media.


2017 ◽  
Vol 23 (S1) ◽  
pp. 1858-1859
Author(s):  
Volkan Ortalan ◽  
Chang Wan Han ◽  
Jefferey Greeley ◽  
Chao Wang ◽  
Fabio H Ribeiro ◽  
...  

Nano Energy ◽  
2018 ◽  
Vol 49 ◽  
pp. 40-50 ◽  
Author(s):  
Roghayeh Imani ◽  
Zhen Qiu ◽  
Reza Younesi ◽  
Meysam Pazoki ◽  
Daniel L.A. Fernandes ◽  
...  

2003 ◽  
Vol 107 (31) ◽  
pp. 7753-7758 ◽  
Author(s):  
Jakob B. Wagner ◽  
Poul L. Hansen ◽  
Alfons M. Molenbroek ◽  
Henrik Topsøe ◽  
Bjerne S. Clausen ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document