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Title: Aerobic oxidation of alcohols over Ru-Mn-Ce and Ru-Co-Ce catalysts: The effect of calcination temperature

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1412609
Grant/Contract Number:
FG02-86ER13622.A000
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Applied Catalysis. A, General
Additional Journal Information:
Journal Volume: 535; Journal Issue: C; Related Information: CHORUS Timestamp: 2017-12-11 08:35:19; Journal ID: ISSN 0926-860X
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English

Citation Formats

Liu, Gui, Liu, Junhua, Li, Wenxiu, Liu, Cheng, Wang, Fang, He, Junkai, Guild, Curtis, Jin, Jing, Kriz, David, Miao, Ran, and Suib, Steven L. Aerobic oxidation of alcohols over Ru-Mn-Ce and Ru-Co-Ce catalysts: The effect of calcination temperature. Netherlands: N. p., 2017. Web. doi:10.1016/j.apcata.2017.02.006.
Liu, Gui, Liu, Junhua, Li, Wenxiu, Liu, Cheng, Wang, Fang, He, Junkai, Guild, Curtis, Jin, Jing, Kriz, David, Miao, Ran, & Suib, Steven L. Aerobic oxidation of alcohols over Ru-Mn-Ce and Ru-Co-Ce catalysts: The effect of calcination temperature. Netherlands. doi:10.1016/j.apcata.2017.02.006.
Liu, Gui, Liu, Junhua, Li, Wenxiu, Liu, Cheng, Wang, Fang, He, Junkai, Guild, Curtis, Jin, Jing, Kriz, David, Miao, Ran, and Suib, Steven L. Sat . "Aerobic oxidation of alcohols over Ru-Mn-Ce and Ru-Co-Ce catalysts: The effect of calcination temperature". Netherlands. doi:10.1016/j.apcata.2017.02.006.
@article{osti_1412609,
title = {Aerobic oxidation of alcohols over Ru-Mn-Ce and Ru-Co-Ce catalysts: The effect of calcination temperature},
author = {Liu, Gui and Liu, Junhua and Li, Wenxiu and Liu, Cheng and Wang, Fang and He, Junkai and Guild, Curtis and Jin, Jing and Kriz, David and Miao, Ran and Suib, Steven L.},
abstractNote = {},
doi = {10.1016/j.apcata.2017.02.006},
journal = {Applied Catalysis. A, General},
number = C,
volume = 535,
place = {Netherlands},
year = {Sat Apr 01 00:00:00 EDT 2017},
month = {Sat Apr 01 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.apcata.2017.02.006

Citation Metrics:
Cited by: 2works
Citation information provided by
Web of Science

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  • Catalytic oxidation of alcohols often requires the presence of expensive transition metals. We show that earth-abundant Fe atoms dispersed throughout a nitrogen-containing carbon matrix catalyze the oxidation of benzyl alcohol and 5-hydroxymethylfurfural by O 2 in the aqueous phase. Furthermore, the activity of the catalyst can be regenerated by a mild treatment in H 2. An observed kinetic isotope effect indicates that β-H elimination from the alcohol is the kinetically relevant step in the mechanism, which can be accelerated by substituting Fe with Cu. Dispersed Cr, Co, and Ni also convert alcohols, demonstrating the general utility of metal–nitrogen–carbon materials formore » alcohol oxidation catalysis. Oxidation of aliphatic alcohols is substantially slower than that of aromatic alcohols, but adding 2,2,6,6-tetramethyl-1-piperidinyloxy as a co-catalyst with Fe can significantly improve the reaction rate.« less
  • A 2% Ru-promoted 15% Co/Al2O3 catalyst was tested after reduction and after being subjected to oxidation-reduction cycles. The catalysts were characterized over four oxidation-reduction cycles by XANES/EXAFS, TPR, HRTEM, and EDS elemental mapping. The oxidation-reduction treatments were found to assist in sintering the metallic clusters to a larger size, and to promote mixing on at least the order of the nanoscale. The larger crystallites in closer proximity to the Ru promoter led to a more facile reduction of the cobalt crystallites. In addition, a catalyst exposed to two oxidation-reduction cycles resulted in slightly higher conversion, higher a-value product, slightly lowermore » methane selectivity, and greater stability over a reduced freshly calcined catalyst.« less
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  • Cited by 15
  • Infrared spectra are reported of Ru/TiO{sub 2} and Ru-Rh/TiO{sub 2} exposed to CO + H{sub 2} at 553 K and 1.5 MN m{sup -2} (15 atm). The Ru-Rh catalyst contained both exposed Ru and Rh atoms, which during reaction favoured adsorbed linear CO on Ru and bridged CO on Rh. Formation of an inactive long-chain hydrocarbon was accompanied by the appearance of a short-chain hydrocarbon which could be subsequently converted to methane. Ethoxide and ethanoate ions resulted from catalysis involving Rh. The results contrast with previous data for Ru-Rh/TiO{sub 2}. A 14:1 ratio of CO:H{sub 2} over Ru-Rh/TiO{sub 2} predominantlymore » gave methane and an adsorbed CH{sub 2}-containing hydrocarbon. The mixed metal catalyst generated more methane but less surface hydrocarbon than either Ru/TiO{sub 2} or Rh/TiO{sub 2} catalysts. 37 refs., 5 figs.« less