Kinetic variations in Acid-Catalyzed Monosaccharide Conversion

Sebastian Meier*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Kinetic models for the conversion of abundant carbohydrates have often remained controversial. Direct spectroscopic observations show that conversion of ketoses by Lewis acidic salts follows an exponential time course, while the corresponding conversion of aldoses follows a second order kinetic in various solvents and using various metal chloride catalysts. Brønsted acid catalyzed conversion of glucose and fructose displays two kinetic regimes due to the competition between the kinetically favoured formation of androhydrosugars and the thermodynamically favored formation of furanics. Thus, slow kinetic phases occur towards the end of glucose conversion by Lewis and Brønsted acidic catalysis, albeit for different reasons.
Original languageEnglish
Article number105894
JournalCatalysis Communications
Volume135
Number of pages5
ISSN1566-7367
DOIs
Publication statusPublished - 2020

Keywords

  • Brønsted acid
  • Glucose
  • In situ NMR
  • Kinetics
  • Lewis acid
  • Reaction order

Cite this

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title = "Kinetic variations in Acid-Catalyzed Monosaccharide Conversion",
abstract = "Kinetic models for the conversion of abundant carbohydrates have often remained controversial. Direct spectroscopic observations show that conversion of ketoses by Lewis acidic salts follows an exponential time course, while the corresponding conversion of aldoses follows a second order kinetic in various solvents and using various metal chloride catalysts. Br{\o}nsted acid catalyzed conversion of glucose and fructose displays two kinetic regimes due to the competition between the kinetically favoured formation of androhydrosugars and the thermodynamically favored formation of furanics. Thus, slow kinetic phases occur towards the end of glucose conversion by Lewis and Br{\o}nsted acidic catalysis, albeit for different reasons.",
keywords = "Br{\o}nsted acid, Glucose, In situ NMR, Kinetics, Lewis acid, Reaction order",
author = "Sebastian Meier",
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Kinetic variations in Acid-Catalyzed Monosaccharide Conversion. / Meier, Sebastian.

In: Catalysis Communications, Vol. 135, 105894, 2020.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Kinetic variations in Acid-Catalyzed Monosaccharide Conversion

AU - Meier, Sebastian

PY - 2020

Y1 - 2020

N2 - Kinetic models for the conversion of abundant carbohydrates have often remained controversial. Direct spectroscopic observations show that conversion of ketoses by Lewis acidic salts follows an exponential time course, while the corresponding conversion of aldoses follows a second order kinetic in various solvents and using various metal chloride catalysts. Brønsted acid catalyzed conversion of glucose and fructose displays two kinetic regimes due to the competition between the kinetically favoured formation of androhydrosugars and the thermodynamically favored formation of furanics. Thus, slow kinetic phases occur towards the end of glucose conversion by Lewis and Brønsted acidic catalysis, albeit for different reasons.

AB - Kinetic models for the conversion of abundant carbohydrates have often remained controversial. Direct spectroscopic observations show that conversion of ketoses by Lewis acidic salts follows an exponential time course, while the corresponding conversion of aldoses follows a second order kinetic in various solvents and using various metal chloride catalysts. Brønsted acid catalyzed conversion of glucose and fructose displays two kinetic regimes due to the competition between the kinetically favoured formation of androhydrosugars and the thermodynamically favored formation of furanics. Thus, slow kinetic phases occur towards the end of glucose conversion by Lewis and Brønsted acidic catalysis, albeit for different reasons.

KW - Brønsted acid

KW - Glucose

KW - In situ NMR

KW - Kinetics

KW - Lewis acid

KW - Reaction order

U2 - 10.1016/j.catcom.2019.105894

DO - 10.1016/j.catcom.2019.105894

M3 - Journal article

VL - 135

JO - Catalysis Communications

JF - Catalysis Communications

SN - 1566-7367

M1 - 105894

ER -