The Library
Active site isolation in bismuth-poisoned Pd/SiO2 catalysts for selective hydrogenation of furfural
Tools
Cherkasov, Nikolay, Expósito, Antonio José, Aw, Moom Sinn, Fernández-García, Javier, Huband, Steven, Sloan, Jeremy, Paniwnyk, Larysa and Rebrov, Evgeny V. (2019) Active site isolation in bismuth-poisoned Pd/SiO2 catalysts for selective hydrogenation of furfural. Applied Catalysis A: General, 570 . pp. 183-191. doi:10.1016/j.apcata.2018.11.016 ISSN 0926-860X.
|
PDF
WRAP-Active-site-isolation-bismuth-poisoned-Cherkasov-2018.pdf - Accepted Version - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (1119Kb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.apcata.2018.11.016
Abstract
Active site isolation in furfural (FA) hydrogenation was studied by poisoning a Pd catalyst with bismuth. A solution of FA in water was hydrogenated over a 5 wt% Pd/SiO2 catalyst in a batch reactor at various reaction temperatures and pressures. Furfuryl alcohol (FAL) was an intermediate product which was further hydrogenated into tetrahydrofurfuryl alcohol (TFAL) or cyclopentanone (CPA) and cyclopentanol (CPOL). While application of hydrogen pressure above 30 bar had little effect on the hydrogenation kinetics, a reaction temperature affected product distribution and the main product changed from TFAL (at 50 °C) to FAL (100 and 150 °C). Poisoning the catalyst with Bi decreased the number of available active sites but had little effect on the turn-over frequencies, most likely because of the absence of electronic effects of Bi on Pd nanoparticles. The main reaction product over the Bi-poisoned catalyst was FAL with no FA oligomerisation products. At a reaction temperature of 150 °C, CPA was formed with a 57% yield. Considering that Bi preferentially poisons step sites of Pd, the comparison of the product distribution between the Pd and Pd-Bi catalyst as well as the literature data for the alloy Pd-Cu catalysts indicates that the active site isolation observed in the Pd-Bi catalysts is responsible for the increasing FAL and CPA selectivities and elimination of oligomer by-products.
Item Type: | Journal Article | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QD Chemistry T Technology > TP Chemical technology |
||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering Faculty of Science, Engineering and Medicine > Science > Physics |
||||||||||||
Library of Congress Subject Headings (LCSH): | Furfural, Hydrogenation, Catalysis | ||||||||||||
Journal or Publication Title: | Applied Catalysis A: General | ||||||||||||
Publisher: | Elsevier BV | ||||||||||||
ISSN: | 0926-860X | ||||||||||||
Official Date: | 25 January 2019 | ||||||||||||
Dates: |
|
||||||||||||
Volume: | 570 | ||||||||||||
Page Range: | pp. 183-191 | ||||||||||||
DOI: | 10.1016/j.apcata.2018.11.016 | ||||||||||||
Status: | Peer Reviewed | ||||||||||||
Publication Status: | Published | ||||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||||
Date of first compliant deposit: | 27 November 2018 | ||||||||||||
Date of first compliant Open Access: | 20 November 2019 | ||||||||||||
RIOXX Funder/Project Grant: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year