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Title: CO2 hydrogenation on Pt, Pt/SiO2 and Pt/TiO2: Importance of synergy between Pt and oxide support

Journal Article · · Journal of Catalysis
 [1];  [2];  [3];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Dept.
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Dept.; Tsinghua Univ., Beijing (China). Dept. of Chemical Engineering
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Dept.; Columbia Univ., New York, NY (United States). Dept. of Chemical Engineering

In this paper we combined density functional theory (DFT), kinetic Monte Carlo (KMC) simulations and experimental measurements to gain insight into the mechanisms of CO2 conversion by hydrogen on the Pt nanoparticle (NP). The results show that in spite of the presence of active, low-coordinated sites, Pt NP alone is not able to catalyze the reaction due to the weak CO2 binding on the catalyst. Once CO2 is stabilized, the hydrogenation of CO2 to CO via the reverse-water–gas shift (RWGS) reaction is promoted; in contrast, the enhancement for further *CO hydrogenation to CH4 is less significant and no CH3OH is observed. The selectivity to CO is mainly determined by CO binding energy and the energetics of *CO hydrogenation to *HCO, while that for CH4 and CH3OH is determined by the competition between hydrogenation and C–O bond scission reactions of the *H2COH species. Using SiO2 and TiO2 as the support, Pt NP is able to promote the overall CO2 conversion, while the impact on the selectivity is rather small. The theoretically predicted trend in activity and selectivity is in good agreement with the experimental results. Finally, the enhanced activity of Pt/oxide over Pt is originated from the sites at the Pt–oxide interface, where the synergy between Pt and oxide plays an important role.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Contributing Organization:
Tsinghua Univ., Beijing (China); Columbia Univ., New York, NY (United States)
Grant/Contract Number:
SC0012704; AC02-05CH11231; AC05-00OR22725
OSTI ID:
1341672
Alternate ID(s):
OSTI ID: 1398838
Report Number(s):
BNL-113400-2017-JA; R&D Project: CO035; KC0302010
Journal Information:
Journal of Catalysis, Vol. 343; ISSN 0021-9517
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 210 works
Citation information provided by
Web of Science

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Cited By (16)

Selective Hydrogenation of Carbon Dioxide into Methanol book January 2020
Preparation of a Cu(BTC)-rGO catalyst loaded on a Pt deposited Cu foam cathode to reduce CO 2 in a photoelectrochemical cell journal January 2018
Room temperature CO oxidation catalysed by supported Pt nanoparticles revealed by solid-state NMR and DNP spectroscopy journal January 2019
CO 2 adsorption on gas-phase Cu 4−x Pt x ( x = 0–4) clusters: a DFT study
  • Gálvez-González, Luis E.; Juárez-Sánchez, J. Octavio; Pacheco-Contreras, Rafael
  • Physical Chemistry Chemical Physics, Vol. 20, Issue 25 https://doi.org/10.1039/c8cp00818c
journal January 2018
Pyrolysis of metal–organic frameworks to hierarchical porous Cu/Zn-nanoparticle@carbon materials for efficient CO 2 hydrogenation journal January 2017
MOFs-Based Heterogeneous Catalysts: New Opportunities for Energy-Related CO 2 Conversion journal October 2018
Hydrogenation of Carbon Dioxide to Value-Added Chemicals by Heterogeneous Catalysis and Plasma Catalysis journal March 2019
Unravelling the Promotional Effect of La 2 O 3 in Pt/La‐TiO 2 Catalysts for CO 2 Hydrogenation journal November 2019
DFT and microkinetic investigation of methanol synthesis via CO 2 hydrogenation on Ni(111)-based surfaces journal January 2019
Ordered Mesoporous CeO 2 ‐supported Ag as an Effective Catalyst for Carboxylative Coupling Reaction Using CO 2 journal April 2019
Highly efficient binary copper−iron catalyst for photoelectrochemical carbon dioxide reduction toward methane journal January 2020
Optimizing reaction paths for methanol synthesis from CO2 hydrogenation via metal-ligand cooperativity journal April 2019
Chemically and electrochemically catalysed conversion of CO2 to CO with follow-up utilization to value-added chemicals journal April 2018
Synthesis of Aluminium Doped Na-Titanate Nanorods and Its Application as Potential CO2 Hydrogenation Catalysts journal July 2019
A theoretical study of the reverse water‐gas shift reaction on Ni(111) and Ni(311) surfaces journal November 2019
Highly Efficient Carbon Dioxide Hydrogenation to Methanol Catalyzed by Zigzag Platinum-Cobalt Nanowires journal April 2017

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