English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Direct, Selective Production of Aromatic Alcohols from Ethanol Using a Tailored Bifunctional Cobalt–Hydroxyapatite Catalyst

Wang, Q.-N., Weng, X.-F., Zhou, B.-C., Lv, S.-P., Miao, S., Zhang, D., et al. (2019). Direct, Selective Production of Aromatic Alcohols from Ethanol Using a Tailored Bifunctional Cobalt–Hydroxyapatite Catalyst. ACS Catalysis, 9(8), 7204-7216. doi:10.1021/acscatal.9b02566.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Wang, Qing-Nan1, Author
Weng, Xue-Fei1, Author
Zhou, Bai-Chuan1, Author
Lv, Shao-Pei1, Author
Miao, Shu2, Author
Zhang, Daliang3, Author
Han, Yu3, Author
Scott, Susannah L.4, Author
Schüth, Ferdi5, Author           
Lu, An-Hui1, Author
Affiliations:
1State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, People’s Republic of China, ou_persistent22              
2Dalian National Laboratory of Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China, ou_persistent22              
3Imaging and Characterization Core Laboratory, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia, ou_persistent22              
4Department of Chemical Engineering, University of California, Santa Barbara, California 93106, United States, ou_persistent22              
5Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              

Content

show
hide
Free keywords: ethanol; aromatic alcohols; cobalt-hydroxyapatite; dehydrogenation; dehydrocyclization
 Abstract: Aromatic alcohols are essential components of many solvents, coatings, plasticizers, fine chemicals, and pharmaceuticals. Traditional manufacturing processes involving the oxidation of petroleum-derived aromatic hydrocarbons suffer from low selectivity due to facile overoxidation reactions which produce aromatic aldehydes, acids, and esters. Here we report a Co-containing hydroxyapatite (HAP) catalyst that converts ethanol directly to methylbenzyl alcohols (MB–OH, predominantly 2-MB–OH) at 325 °C. The dehydrogenation of ethanol to acetaldehyde, which is catalyzed by Co2+, has the highest reaction barrier. Acetaldehyde undergoes rapid, HAP-catalyzed condensation and forms the key intermediate, 2-butenal, which yields aromatic aldehydes through self-condensation and then MB–OH via hydrogenation. In the presence of Co2+, 2-butenal is selectively hydrogenated to 2-butenol. This reaction does not hinder aromatization because cross-coupling between 2-butenal and 2-butenol leads directly to MB–OH without passing through MB═O. Using these insights a dual-bed catalyst configuration was designed for use in a single reactor to improve the aromatic alcohol selectivity. Its successful use supports the proposed reaction mechanism.

Details

show
hide
Language(s): eng - English
 Dates: 2019-06-182019-07-022019-08-02
 Publication Status: Published online
 Pages: 13
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/acscatal.9b02566
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: ACS Catalysis
  Abbreviation : ACS Catal.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Washington, DC : ACS
Pages: - Volume / Issue: 9 (8) Sequence Number: - Start / End Page: 7204 - 7216 Identifier: ISSN: 2155-5435
CoNE: https://pure.mpg.de/cone/journals/resource/2155-5435