Deactivation study of the hydrodeoxygenation of p-methylguaiacol over silica supported rhodium and platinum catalysts


Hydrodeoxygenation of para-methylguaiacol using silica supported Rh or Pt catalysts was investigated using a fixed-bed reactor at 300 °C, under 4 barg hydrogen and a WHSV of 2.5 h−1. The activity, selectivity and deactivation of the catalysts were examined in relation to time on stream. Three catalysts were tested: 2.5% Rh/silica supplied by Johnson Matthey (JM), 2.5% Rh/silica and 1.55% Pt/silica both prepared in-house. The Rh/silica (JM) showed the best stability with steady-state reached after 6 h on stream and a constant activity over 3 days of reaction. In contrast the other two catalysts did not reach steady state within the timeframe of the tests, with continuous deactivation over the time on stream. Nevertheless higher coking was observed on the Rh/silica (JM) catalyst, while all three catalysts showed evidence of sintering. The Pt catalyst (A) showed higher selectivity for the production of 4-methylcatechol while the Rh catalysts were more selective toward the cresols. In all cases, complete hydrodeoxygenation of the methylguaiacol to methylcyclohexane was not observed.

Publication DOI:
Divisions: College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry
College of Engineering & Physical Sciences > Energy and Bioproducts Research Institute (EBRI)
Additional Information: © the authors. Creative Commons By Attribution Funding: EPSRC (grants EP/K014706/1, EP/K014668/1, EP/K014854/1, EP/K014714/1 and EP/M013219/1).
Uncontrolled Keywords: deactivation,hydrodeoxygenation,p-methylguaiacol,platinum,rhodium,Catalysis,Process Chemistry and Technology
Publication ISSN: 1873-3875
Last Modified: 26 Feb 2024 08:19
Date Deposited: 26 Apr 2017 10:30
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2017-06-05
Published Online Date: 2017-03-31
Accepted Date: 2017-03-29
Submitted Date: 2016-06-05
Authors: Bouxin, F.P.
Zhang, X.
Kings, I.N.
Lee, A.F.
Simmons, M.J.H.
Wilson, K. (ORCID Profile 0000-0003-4873-708X)
Jackson, S.D.



Version: Published Version

License: Creative Commons Attribution

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