DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: The role of manganese in CoMnOx catalysts for selective long-chain hydrocarbon production via Fischer-Tropsch synthesis

Journal Article · · Nature Communications
ORCiD logo [1];  [2]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [1];  [1];  [3]; ORCiD logo [5];  [5]; ORCiD logo [6]; ORCiD logo [6]; ORCiD logo [1]; ORCiD logo [6]; ORCiD logo [6];  [7] more »; ORCiD logo [8]; ORCiD logo [8]; ORCiD logo [9]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [2]; ORCiD logo [3] « less
  1. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  2. Barcelona Institute of Science and Technology (BIST), Tarragona (Spain)
  3. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); University of California, Berkeley, CA (United States)
  4. University of California, Berkeley, CA (United States)
  5. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Molecular Foundry
  6. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  7. Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  8. Brookhaven National Laboratory (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
  9. SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Cobalt is an efficient catalyst for Fischer–Tropsch synthesis (FTS) of hydrocarbons from syngas (CO + H2) with enhanced selectivity for long-chain hydrocarbons when promoted by Manganese. However, the molecular scale origin of the enhancement remains unclear. Here we present an experimental and theoretical study using model catalysts consisting of crystalline CoMnOx nanoparticles and thin films, where Co and Mn are mixed at the sub-nm scale. Employing TEM and in-situ X-ray spectroscopies (XRD, APXPS, and XAS), we determine the catalyst’s atomic structure, chemical state, reactive species, and their evolution under FTS conditions. We show the concentration of CHx, the key intermediates, increases rapidly on CoMnOx, while no increase occurs without Mn. DFT simulations reveal that basic O sites in CoMnOx bind hydrogen atoms resulting from H2 dissociation on Co0 sites, making them less available to react with CHx intermediates, thus hindering chain termination reactions, which promotes the formation of long-chain hydrocarbons.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Contributing Organization:
Brookhaven National Laboratory (BNL)
Grant/Contract Number:
AC02-05CH11231; AC02-76SF00515; SC0012704
OSTI ID:
2483531
Report Number(s):
BNL--226432-2024-JAAM
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 15; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (42)

High resolution XPS of organic polymers, the scienta ESCA300 database. By G. Beamson and D. Briggs, Wiley, Chichester 1992, 295 pp., hardcover, £ 65.00, ISBN 0-471-93592-1 journal October 1993
Synthesis and Characterization of Supported Cobalt-Manganese Nanoparticles as Model Catalysts for Fischer-Tropsch Synthesis journal August 2014
Investigations of Structure Sensitivity in Heterogeneous Catalysis: From Single Crystals to Monodisperse Nanoparticles journal August 2013
Characterization of CoCu- and CoMn-Based Catalysts for the Fischer–Tropsch Reaction Toward Chain-Lengthened Oxygenates journal April 2018
Chemisorption of ethylene, propylene and isobutylene on ordered Sn/Pt(111) surface alloys journal August 1997
Mechanism insight into MnO for CHx(x = 1 to 3) hydrogenation and C1-C1 coupling processes on Co(0001) surface: A DFT and kMC study journal June 2022
Mn promotion effects in Co/TiO Fischer?Tropsch catalysts as investigated by XPS and STEM-EELS journal March 2005
Effects of Mn promotion on the activity and selectivity of Co/SiO2 for Fischer–Tropsch Synthesis journal April 2012
Investigations of element spatial correlation in Mn-promoted Co-based Fischer–Tropsch synthesis catalysts journal August 2015
Effects of Lewis acidity of metal oxide promoters on the activity and selectivity of Co-based Fischer–Tropsch synthesis catalysts journal June 2016
Kinetic study of Fischer–Tropsch process on titania-supported cobalt–manganese catalyst journal November 2010
Cobalt Carbide Nanocatalysts for Efficient Syngas Conversion to Value-Added Chemicals with High Selectivity journal February 2021
Oxygen K-edge X-ray Absorption Spectra journal April 2020
Scanning Nanobeam Diffraction and Energy Dispersive Spectroscopy Characterization of a Model Mn-Promoted Co/Al 2 O 3 Nanosphere Catalyst for Fischer–Tropsch Synthesis journal September 2020
An Investigation into the Effects of Mn Promotion on the Activity and Selectivity of Co/SiO 2 for Fischer–Tropsch Synthesis: Evidence for Enhanced CO Adsorption and Dissociation journal September 2015
Ambient-Pressure X-ray Photoelectron Spectroscopy Study of Cobalt Foil Model Catalyst under CO, H 2 , and Their Mixtures journal January 2017
Carbon Monoxide Activation on Cobalt Carbide for Fischer–Tropsch Synthesis from First-Principles Theory journal July 2019
Competing Mechanisms in CO Hydrogenation over Co-MnO x Catalysts journal May 2019
Managing the Computational Chemistry Big Data Problem: The ioChem-BD Platform journal December 2014
Carbon monoxide hydrogenation using cobalt manganese oxide catalysts: initial catalyst optimization studies journal August 1988
Fischer−Tropsch Kinetic Studies with Cobalt−Manganese Oxide Catalysts journal December 1999
Desorption, decomposition, and deuterium exchange reactions of unsaturated hydrocarbons (ethylene, acetylene, propylene, and butenes) on the platinum(111) crystal face journal February 1982
Size-Dependent Dissociation of Carbon Monoxide on Cobalt Nanoparticles journal January 2013
CO Oxidation Mechanisms on CoO x -Pt Thin Films journal April 2020
Catalyst Chemical State during CO Oxidation Reaction on Cu(111) Studied with Ambient-Pressure X-ray Photoelectron Spectroscopy and Near Edge X-ray Adsorption Fine Structure Spectroscopy journal August 2015
In Situ X-ray Absorption of Co/Mn/TiO 2 Catalysts for Fischer−Tropsch Synthesis journal October 2004
X-ray Absorption Spectroscopy of Mn/Co/TiO 2 Fischer−Tropsch Catalysts:  Relationships between Preparation Method, Molecular Structure, and Catalyst Performance journal May 2006
Dealloying of Cobalt from CuCo Nanoparticles under Syngas Exposure journal March 2013
Cobalt carbide nanoprisms for direct production of lower olefins from syngas journal October 2016
Tuning the catalytic CO hydrogenation to straight- and long-chain aldehydes/alcohols and olefins/paraffins journal October 2016
Rate and selectivity hysteresis during the carbon monoxide hydrogenation over promoted Co/MnOx catalysts journal September 2019
Elucidating the active phases of CoOx films on Au(111) in the CO oxidation reaction journal October 2023
New horizon in C1 chemistry: breaking the selectivity limitation in transformation of syngas and hydrogenation of CO 2 into hydrocarbon chemicals and fuels journal January 2019
Influence of the formation of short-chain olefins by manganese/cobalt-catalyzed Fischer–Tropsch synthesis on the selectivity and effective reaction rate journal January 2020
Catalysis and Surface Science journal January 1999
Recent advances in Fischer-Tropsch synthesis using cobalt-based catalysts: a review on supports, promoters, and reactors journal May 2020
A reaction cell with sample laser heating for in situ soft X-ray absorption spectroscopy studies under environmental conditions journal March 2013
Nature of the use of adventitious carbon as a binding energy standard journal May 1995
Colloidal Nanocrystal Shape and Size Control: The Case of Cobalt journal March 2001
The structure of interfacial water on gold electrodes studied by x-ray absorption spectroscopy journal October 2014
Selective conversion of syngas to light olefins journal March 2016
A hydrophobic FeMn@Si catalyst increases olefins from syngas by suppressing C1 by-products journal February 2021