Role of C‐Defective Sites in CO Adsorption over ϵ‐Fe 2 C and η‐Fe 2 C Fischer‐Tropsch Catalysts

2020 ◽  
Vol 15 (23) ◽  
pp. 4014-4022
Author(s):  
Junbo Cao ◽  
Nan Song ◽  
Wenyao Chen ◽  
Yueqiang Cao ◽  
Gang Qian ◽  
...  
Keyword(s):  
Co Adsorption ◽  
Fischer Tropsch ◽  
Defective Sites

Oxygen and CO Adsorption on Au/SiO2Catalysts Prepared by Magnetron Sputtering: The Role of Oxygen Storage

2010 ◽  
Vol 49 (21) ◽  
pp. 10428-10437 ◽  
Author(s):  
Xiaolin Zheng ◽  
Gabriel M. Veith ◽  
Evgeniy Redekop ◽  
Cynthia S. Lo ◽  
Gregory S. Yablonsky ◽  
...  
Keyword(s):  
Magnetron Sputtering ◽  
Co Adsorption ◽  
Oxygen Storage

scholarly journals Things go better with coke: the beneficial role of carbonaceous deposits in heterogeneous catalysis

2016 ◽  
Vol 6 (2) ◽  
pp. 363-378 ◽  
Author(s):  
C. H. Collett ◽  
J. McGregor
Keyword(s):  
Heterogeneous Catalysis ◽  
Heterogeneous Catalysts ◽  
Catalyst Deactivation ◽  
Catalytic Performance ◽  
Fischer Tropsch ◽  
Carbonaceous Deposits ◽  
Beneficial Role ◽  
Catalytic Processes

Carbonaceous deposits on heterogeneous catalysts are traditionally associated with catalyst deactivation. However, they can play a beneficial role in many catalytic processes, e.g. dehydrogenation, hydrogenation, alkylation, isomerisation, Fischer–Tropsch, MTO etc. This review highlights the role and mechanism by which coke deposits can enhance catalytic performance.

Support Effect of the Fe/BN Catalyst on Fischer–Tropsch Performances: Role of the Surface B–O Defect

2018 ◽  
Vol 57 (8) ◽  
pp. 2805-2810 ◽  
Author(s):  
Jianghong Wu ◽  
Liancheng Wang ◽  
Xi Yang ◽  
Baoliang Lv ◽  
Jiangang Chen
Keyword(s):  
Support Effect ◽  
Fischer Tropsch

Suppression by Pt of CO adsorption and dissociation and methane formation on Fe5C2(100) surfaces

2018 ◽  
Vol 20 (39) ◽  
pp. 25246-25255 ◽  
Author(s):  
Yurong He ◽  
Peng Zhao ◽  
Jinjia Liu ◽  
Wenping Guo ◽  
Yong Yang ◽  
...  
Keyword(s):  
Density Functional ◽  
Co Adsorption ◽  
Density Functional Theory Method ◽  
Methane Formation ◽  
Fischer Tropsch ◽  
Functional Theory ◽  
Spin Polarized ◽  
Synthesis Catalysts ◽  
Iron Based ◽  
Adsorption And Dissociation

To understand the chemical origin of platinum promotion effects on iron based Fischer–Tropsch synthesis catalysts, the effects of Pt on CO adsorption and dissociation as well as surface carbon hydrogenation on the Fe5C2(100) facet with different surface C* contents have been studied using the spin-polarized density functional theory method.

Role of mesopores in Co/ZSM-5 for the direct synthesis of liquid fuel by Fischer–Tropsch synthesis

2018 ◽  
Vol 8 (24) ◽  
pp. 6346-6359 ◽  
Author(s):  
Ji-Eun Min ◽  
Sungtak Kim ◽  
Geunjae Kwak ◽  
Yong Tae Kim ◽  
Seung Ju Han ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Pore Structure ◽  
Liquid Fuel ◽  
Direct Synthesis ◽  
Reaction System ◽  
Complex Reaction ◽  
Fischer Tropsch ◽  
Solid Catalysts ◽  
The Impact

In a complex reaction system, in which gas, liquid, and solid catalysts work together, understanding the impact of mass transfer that varies with the catalyst pore structure is very challenging but also essential to designing selective catalysts.

Role of CO in the Water-Induced Formation of Cobalt Oxide in a High Conversion Fischer–Tropsch Environment

ACS Catalysis ◽  
2018 ◽  
Vol 8 (5) ◽  
pp. 3985-3989 ◽  
Author(s):  
Moritz Wolf ◽  
Bridget K. Mutuma ◽  
Neil J. Coville ◽  
Nico Fischer ◽  
Michael Claeys
Keyword(s):  
Cobalt Oxide ◽  
High Conversion ◽  
Fischer Tropsch

scholarly journals Facile Synthesis of a Tailored-Designed Au/Pt Nanoanode for Enhanced Formic Acid, Methanol, and Ethylene Glycol Electrooxidation

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Islam M. Al-Akraa ◽  
Yaser M. Asal ◽  
Ahmad M. Mohammad
Keyword(s):  
Ethylene Glycol ◽  
Formic Acid ◽  
Energy Demand ◽  
Liquid Fuel ◽  
Surface Coverage ◽  
Co Adsorption ◽  
Catalytic Performance ◽  
Onset Potential ◽  
Anodic Reactions

The recent revolution in nanoscience and global energy demand have motivated research in liquid fuel cells (LFCs) due to their enhanced efficiency, moving flexibility, and reduced contamination. In line with this advancement, a glassy carbon (GC) electrode was modified with platinum (PtNPs) and gold (AuNPs) nanoparticles to fabricate a nanosized anode for formic acid, methanol, and ethylene glycol electrooxidation (abbreviated, respectively, to FAO, MO, and EGO), of the key anodic reactions of LFCs. The deposition sequence of the catalyst’s layers was important where the Au/Pt/GC electrode (in which PtNPs were directly deposited onto the GC surface followed by AuNPs—surface coverage ≈ 32%) exhibited the best catalytic performance. The catalytic performance of the Au/Pt/GC anode excelled (at least threefold) its value obtained at the Pt/GC anode with regard to FAO and EGO, if the oxidation peak currents were compared. This enhancement got reduced to 1.4 times in the case of MO, but the large decrease (− 220 mV) in the onset potential of MO provided compensation. The role of AuNPs in the Au/Pt/GC catalyst was principal in boosting its catalytic performance as it immunized the underlying PtNPs against CO poisoning which is associated with the release of CO as an intermediate during the oxidation. Interestingly, AuNPs succeeded in interrupting the contiguity of the Pt surface sites required for CO adsorption during FAO, MO, and EGO and, thus, presage preventing the deterioration of the catalytic performance of their corresponding LFCs.

Supported Fe/MnOx catalyst with Ag doping for remarkably enhanced catalytic activity in Fischer–Tropsch synthesis

2018 ◽  
Vol 8 (7) ◽  
pp. 1953-1970 ◽  
Author(s):  
Yuebing Xu ◽  
Xinli Jia ◽  
Xiaohao Liu
Keyword(s):  
Catalytic Activity ◽  
Tropsch Synthesis ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Ag Doping

The role of Ag in the promotion of the FTS performance and the evolutions of structure and phase over the Fe/MnOx catalyst has been clearly elucidated.

CO adsorption on the multiple-site Ru(112̄1) surface: The role of bonding competition

2003 ◽  
Vol 118 (21) ◽  
pp. 9773-9782 ◽  
Author(s):  
C. Y. Fan ◽  
H. P. Bonzel ◽  
K. Jacobi
Keyword(s):  
Co Adsorption ◽  
Multiple Site
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