Xylose hydrogenation: Kinetic and NMR studies of the reaction mechanisms

Jyri Pekka Mikkola; Rainer Sjöholm; Tapio Salmi; Päivi Mäki-Arvela

doi:10.1016/S0920-5861(98)00360-5

Xylose hydrogenation: Kinetic and NMR studies of the reaction mechanisms

Jyri Pekka Mikkola, Rainer Sjöholm, Tapio Salmi^*, Päivi Mäki-Arvela

^*Corresponding author for this work

Industrial Chemistry and Reaction Engineering

Research output: Contribution to journal › Article › Scientific › peer-review

59 Citations (Scopus)

Abstract

Hydrogenation of xylose over Raney nickel was studied in a batch reactor. A pseudo-homogeneous kinetic model was able to prognose the xylose and xylitol concentrations rather well. The obtained fit for the activation energies suggests that external diffusion limitations are absent in our experimental conditions. The sugar equilibria studies gave new information about the temperature dependence of the α-β-pyranose equilibria. It was found that the equilibria in D₂O follows an S-shaped curve, the equilibria being shifted towards the α-form at higher temperatures.

Original language	English
Pages (from-to)	73-81
Number of pages	9
Journal	Catalysis Today
Volume	48
Issue number	1-4
DOIs	https://doi.org/10.1016/S0920-5861(98)00360-5
Publication status	Published - 1999
MoE publication type	A1 Journal article-refereed

Keywords

Catalytic hydrogenation
Monosaccharide
Raney nickel
Xylitol
Xylose

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10.1016/S0920-5861(98)00360-5

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title = "Xylose hydrogenation: Kinetic and NMR studies of the reaction mechanisms",

abstract = "Hydrogenation of xylose over Raney nickel was studied in a batch reactor. A pseudo-homogeneous kinetic model was able to prognose the xylose and xylitol concentrations rather well. The obtained fit for the activation energies suggests that external diffusion limitations are absent in our experimental conditions. The sugar equilibria studies gave new information about the temperature dependence of the α-β-pyranose equilibria. It was found that the equilibria in D2O follows an S-shaped curve, the equilibria being shifted towards the α-form at higher temperatures.",

keywords = "Catalytic hydrogenation, Monosaccharide, Raney nickel, Xylitol, Xylose",

author = "Mikkola, {Jyri Pekka} and Rainer Sj{\"o}holm and Tapio Salmi and P{\"a}ivi M{\"a}ki-Arvela",

note = "Funding Information: The scientific consultance of Mr. Heikki Heikkil{\"a}, Mr. Matti Tylli and Mrs. Riitta Hinkkanen (Xyrofin Oy) is gratefully acknowledged. The project was financially supported by the Technology Development centre (TEKES) and Xyrofin Oy. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.",

year = "1999",

doi = "10.1016/S0920-5861(98)00360-5",

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volume = "48",

pages = "73--81",

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T2 - Kinetic and NMR studies of the reaction mechanisms

AU - Mikkola, Jyri Pekka

AU - Sjöholm, Rainer

AU - Salmi, Tapio

AU - Mäki-Arvela, Päivi

N1 - Funding Information: The scientific consultance of Mr. Heikki Heikkilä, Mr. Matti Tylli and Mrs. Riitta Hinkkanen (Xyrofin Oy) is gratefully acknowledged. The project was financially supported by the Technology Development centre (TEKES) and Xyrofin Oy. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.

PY - 1999

Y1 - 1999

N2 - Hydrogenation of xylose over Raney nickel was studied in a batch reactor. A pseudo-homogeneous kinetic model was able to prognose the xylose and xylitol concentrations rather well. The obtained fit for the activation energies suggests that external diffusion limitations are absent in our experimental conditions. The sugar equilibria studies gave new information about the temperature dependence of the α-β-pyranose equilibria. It was found that the equilibria in D2O follows an S-shaped curve, the equilibria being shifted towards the α-form at higher temperatures.

AB - Hydrogenation of xylose over Raney nickel was studied in a batch reactor. A pseudo-homogeneous kinetic model was able to prognose the xylose and xylitol concentrations rather well. The obtained fit for the activation energies suggests that external diffusion limitations are absent in our experimental conditions. The sugar equilibria studies gave new information about the temperature dependence of the α-β-pyranose equilibria. It was found that the equilibria in D2O follows an S-shaped curve, the equilibria being shifted towards the α-form at higher temperatures.

KW - Catalytic hydrogenation

KW - Monosaccharide

KW - Raney nickel

KW - Xylitol

KW - Xylose

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DO - 10.1016/S0920-5861(98)00360-5

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VL - 48

SP - 73

EP - 81

JO - Catalysis Today

JF - Catalysis Today

IS - 1-4

ER -

Xylose hydrogenation: Kinetic and NMR studies of the reaction mechanisms

Abstract

Keywords

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