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

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Deactivation study of the hydrodeoxygenation of p-methylguaiacol over silica supported rhodium and platinum catalysts. / Bouxin, F.p.; Zhang, X.; Kings, Iain; Lee, A.f.; Simmons, Mark; Wilson, K.; Jackson, S.d.

In: Applied Catalysis A: General, Vol. 539, 05.06.2017, p. 29-37.

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@article{14a3d5fb857343ec8de23a7935d0b219,
title = "Deactivation study of the hydrodeoxygenation of p-methylguaiacol over silica supported rhodium and platinum catalysts",
abstract = "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.",
keywords = "Rhodium, Deactivation, Hydrodeoxygenation, p-Methylguaiacol, Platinum",
author = "F.p. Bouxin and X. Zhang and Iain Kings and A.f. Lee and Mark Simmons and K. Wilson and S.d. Jackson",
year = "2017",
month = jun,
day = "5",
doi = "10.1016/j.apcata.2017.03.039",
language = "English",
volume = "539",
pages = "29--37",
journal = "Applied Catalysis A: General",
issn = "0926-860X",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Deactivation study of the hydrodeoxygenation of p-methylguaiacol over silica supported rhodium and platinum catalysts

AU - Bouxin, F.p.

AU - Zhang, X.

AU - Kings, Iain

AU - Lee, A.f.

AU - Simmons, Mark

AU - Wilson, K.

AU - Jackson, S.d.

PY - 2017/6/5

Y1 - 2017/6/5

N2 - 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.

AB - 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.

KW - Rhodium

KW - Deactivation

KW - Hydrodeoxygenation

KW - p-Methylguaiacol

KW - Platinum

U2 - 10.1016/j.apcata.2017.03.039

DO - 10.1016/j.apcata.2017.03.039

M3 - Article

VL - 539

SP - 29

EP - 37

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

SN - 0926-860X

ER -