First-principles study on the selective hydrogenation of the CO and CC bonds of acrolein on Pt–M–Pt (M = Pt, Cu, Ni, Co) surfaces. Issue 26 (23rd June 2020)
- Record Type:
- Journal Article
- Title:
- First-principles study on the selective hydrogenation of the CO and CC bonds of acrolein on Pt–M–Pt (M = Pt, Cu, Ni, Co) surfaces. Issue 26 (23rd June 2020)
- Main Title:
- First-principles study on the selective hydrogenation of the CO and CC bonds of acrolein on Pt–M–Pt (M = Pt, Cu, Ni, Co) surfaces
- Authors:
- Fan, Ting
Sun, Mingying
Ji, Yongfei - Abstract:
- Abstract : Selective hydrogenation of the CO and CC bonds of acrolein on Pt–M–Pt (M = Pt, Cu, Ni, Co) surfaces has been investigated with first-principles calculations to understand the trends of the activity and selectivity of the reaction. Abstract : Selective hydrogenation of the CO and CC bonds of acrolein on Pt–M–Pt (M = Pt, Cu, Ni, Co) surfaces has been investigated with first-principles calculations to understand the trends of the activity and selectivity of the reaction. On the pristine Pt(111) surface, the results suggest that the production of allyl alcohol (a product of CO bond hydrogenation) is limited by its desorption, which results in the selective hydrogenation of the CC bond. On the other three bimetallic surfaces, the results show that the desorption of the product is no longer rate-limiting, and the reaction should be selective for the CO bond hydrogenation. Although the calculated trends of activity and selectivity agree well with the experiment, the absolute selectivity predicted on the bimetallic surfaces is in contrast with existing experiments. Therefore, other effects such as the steric effect and reactions at other types of active sites may need to be investigated. On the other hand, the scaling relation analysis shows that the formation free energies of the intermediates, except for H, scale well with that of the adsorbed acrolein. This suggests that modifying the binding of H on the surface may be another dimension for the design of moreAbstract : Selective hydrogenation of the CO and CC bonds of acrolein on Pt–M–Pt (M = Pt, Cu, Ni, Co) surfaces has been investigated with first-principles calculations to understand the trends of the activity and selectivity of the reaction. Abstract : Selective hydrogenation of the CO and CC bonds of acrolein on Pt–M–Pt (M = Pt, Cu, Ni, Co) surfaces has been investigated with first-principles calculations to understand the trends of the activity and selectivity of the reaction. On the pristine Pt(111) surface, the results suggest that the production of allyl alcohol (a product of CO bond hydrogenation) is limited by its desorption, which results in the selective hydrogenation of the CC bond. On the other three bimetallic surfaces, the results show that the desorption of the product is no longer rate-limiting, and the reaction should be selective for the CO bond hydrogenation. Although the calculated trends of activity and selectivity agree well with the experiment, the absolute selectivity predicted on the bimetallic surfaces is in contrast with existing experiments. Therefore, other effects such as the steric effect and reactions at other types of active sites may need to be investigated. On the other hand, the scaling relation analysis shows that the formation free energies of the intermediates, except for H, scale well with that of the adsorbed acrolein. This suggests that modifying the binding of H on the surface may be another dimension for the design of more efficient catalysts for the active and selective hydrogenation of the CO bond of acrolein. … (more)
- Is Part Of:
- Physical chemistry chemical physics. Volume 22:Issue 26(2020)
- Journal:
- Physical chemistry chemical physics
- Issue:
- Volume 22:Issue 26(2020)
- Issue Display:
- Volume 22, Issue 26 (2020)
- Year:
- 2020
- Volume:
- 22
- Issue:
- 26
- Issue Sort Value:
- 2020-0022-0026-0000
- Page Start:
- 14645
- Page End:
- 14650
- Publication Date:
- 2020-06-23
- Subjects:
- Chemistry, Physical and theoretical -- Periodicals
541.3 - Journal URLs:
- http://pubs.rsc.org/en/journals/journalissues/cp#!issueid=cp016040&type=current&issnprint=1463-9076 ↗
http://www.rsc.org/ ↗ - DOI:
- 10.1039/d0cp01903h ↗
- Languages:
- English
- ISSNs:
- 1463-9076
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 6475.306000
British Library DSC - BLDSS-3PM
British Library STI - ELD Digital store - Ingest File:
- 13822.xml