Homogeneously catalyzed batch reactor glycerol etherification by CsHCO3

Manfred Richter; Yuni K. Krisnandi; Reinhard Eckelt; Andreas Martin

doi:10.1016/j.catcom.2008.04.007

Homogeneously catalyzed batch reactor glycerol etherification by CsHCO₃

Manfred Richter, Yuni K. Krisnandi, Reinhard Eckelt, Andreas Martin

Department of Chemistry

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

52 Citations (Scopus)

Abstract

The CsHCO₃ catalyzed liquid-phase etherification of glycerol to oligomers was studied in a discontinuous batch reactor at 260 °C under normal pressure. Concentration vs. time profiles at 0.1, 0.2 and 0.4 wt% CsHCO₃ addition confirmed the consecutive reaction of diglycerol to higher oligomers. Maximum concentration of the target product, linear diglycerol, was observed after intermediate reaction times of 8 h. Independent of the catalyst concentration, a unique conversion-selectivity profile was observed with 100% linear diglycerol at low glycerol conversion but only 10% at complete glycerol conversion. The α,α′ configurational diglycerol isomer prevailed and was preferentially oligomerized. Interconversion of the configurational isomers was not observed. The conversion of glycerol obeyed a 1st order kinetics.

Original language	English
Pages (from-to)	2112-2116
Number of pages	5
Journal	Catalysis Communications
Volume	9
Issue number	11-12
DOIs	https://doi.org/10.1016/j.catcom.2008.04.007
Publication status	Published - 30 Jun 2008

Keywords

Cesium hydrogencarbonate
Etherification
Glycerol
Linear diglycerol

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10.1016/j.catcom.2008.04.007

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title = "Homogeneously catalyzed batch reactor glycerol etherification by CsHCO3",

abstract = "The CsHCO3 catalyzed liquid-phase etherification of glycerol to oligomers was studied in a discontinuous batch reactor at 260 °C under normal pressure. Concentration vs. time profiles at 0.1, 0.2 and 0.4 wt% CsHCO3 addition confirmed the consecutive reaction of diglycerol to higher oligomers. Maximum concentration of the target product, linear diglycerol, was observed after intermediate reaction times of 8 h. Independent of the catalyst concentration, a unique conversion-selectivity profile was observed with 100% linear diglycerol at low glycerol conversion but only 10% at complete glycerol conversion. The α,α′ configurational diglycerol isomer prevailed and was preferentially oligomerized. Interconversion of the configurational isomers was not observed. The conversion of glycerol obeyed a 1st order kinetics.",

keywords = "Cesium hydrogencarbonate, Etherification, Glycerol, Linear diglycerol",

author = "Manfred Richter and Krisnandi, {Yuni K.} and Reinhard Eckelt and Andreas Martin",

note = "Funding Information: Financial support by the Ministry of Education, Science, and Culture of the State Mecklenburg-Vorpommern (Germany) is gratefully acknowledged. One of the authors (Y.K.K.) wishes to thank Prof. Matthias Beller, director of LIKAT, for granting a postdoctoral fellowship, and the Department of Chemistry, University of Indonesia, for permission to conduct this postdoctoral work.",

year = "2008",

month = jun,

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doi = "10.1016/j.catcom.2008.04.007",

language = "English",

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T1 - Homogeneously catalyzed batch reactor glycerol etherification by CsHCO3

AU - Richter, Manfred

AU - Krisnandi, Yuni K.

AU - Eckelt, Reinhard

AU - Martin, Andreas

N1 - Funding Information: Financial support by the Ministry of Education, Science, and Culture of the State Mecklenburg-Vorpommern (Germany) is gratefully acknowledged. One of the authors (Y.K.K.) wishes to thank Prof. Matthias Beller, director of LIKAT, for granting a postdoctoral fellowship, and the Department of Chemistry, University of Indonesia, for permission to conduct this postdoctoral work.

PY - 2008/6/30

Y1 - 2008/6/30

N2 - The CsHCO3 catalyzed liquid-phase etherification of glycerol to oligomers was studied in a discontinuous batch reactor at 260 °C under normal pressure. Concentration vs. time profiles at 0.1, 0.2 and 0.4 wt% CsHCO3 addition confirmed the consecutive reaction of diglycerol to higher oligomers. Maximum concentration of the target product, linear diglycerol, was observed after intermediate reaction times of 8 h. Independent of the catalyst concentration, a unique conversion-selectivity profile was observed with 100% linear diglycerol at low glycerol conversion but only 10% at complete glycerol conversion. The α,α′ configurational diglycerol isomer prevailed and was preferentially oligomerized. Interconversion of the configurational isomers was not observed. The conversion of glycerol obeyed a 1st order kinetics.

AB - The CsHCO3 catalyzed liquid-phase etherification of glycerol to oligomers was studied in a discontinuous batch reactor at 260 °C under normal pressure. Concentration vs. time profiles at 0.1, 0.2 and 0.4 wt% CsHCO3 addition confirmed the consecutive reaction of diglycerol to higher oligomers. Maximum concentration of the target product, linear diglycerol, was observed after intermediate reaction times of 8 h. Independent of the catalyst concentration, a unique conversion-selectivity profile was observed with 100% linear diglycerol at low glycerol conversion but only 10% at complete glycerol conversion. The α,α′ configurational diglycerol isomer prevailed and was preferentially oligomerized. Interconversion of the configurational isomers was not observed. The conversion of glycerol obeyed a 1st order kinetics.

KW - Cesium hydrogencarbonate

KW - Etherification

KW - Glycerol

KW - Linear diglycerol

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DO - 10.1016/j.catcom.2008.04.007

M3 - Article

AN - SCOPUS:45349096300

SN - 1566-7367

VL - 9

SP - 2112

EP - 2116

JO - Catalysis Communications

JF - Catalysis Communications

IS - 11-12

ER -

Homogeneously catalyzed batch reactor glycerol etherification by CsHCO₃

Abstract

Keywords

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