Potassium modified NaY: A selective and durable catalyst for dehydration of lactic acid to acrylic acid

Peng Sun; Dinghua Yu; Kaimei Fu; Mingyan Gu; Yang Wang; He Huang; Hanjie Ying

doi:10.1016/j.catcom.2009.02.019

Potassium modified NaY: A selective and durable catalyst for dehydration of lactic acid to acrylic acid

Peng Sun, Dinghua Yu, Kaimei Fu, Mingyan Gu, Yang Wang, He Huang, Hanjie Ying

COLLEGE OF BIOTECHNOLOGY AND PHARMACEUTICAL ENGINEERING

Nanjing Tech University

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

91 Scopus citations

Abstract

Potassium modification significantly improved the selectivity and durability of NaY zeolites during lactic acid dehydration reaction. The selectivity of 2.8K/NaY zeolites improved from 14.8% to 50.0% over NaY catalyst. Adding potassium also prolonged catalyst life. After 22 h the acrylic acid selectivity of NaY zeolites reduced to less than 10.0% while that of 3.5K/NaY retained 35.6%. Characterizations with NH₃-TPD, CO₂-TPD, N₂ adsorption and thermal analysis techniques revealed that the enhancement of catalytic performances could be attributed to the tuned acidity/basicity and the potassium electronic promoter effect.

Original language	English
Pages (from-to)	1345-1349
Number of pages	5
Journal	Catalysis Communications
Volume	10
Issue number	9
DOIs	https://doi.org/10.1016/j.catcom.2009.02.019
State	Published - 25 Apr 2009

Keywords

Dehydration
Durability
Lactic acid
NaY
Potassium
Selectivity

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title = "Potassium modified NaY: A selective and durable catalyst for dehydration of lactic acid to acrylic acid",

abstract = "Potassium modification significantly improved the selectivity and durability of NaY zeolites during lactic acid dehydration reaction. The selectivity of 2.8K/NaY zeolites improved from 14.8% to 50.0% over NaY catalyst. Adding potassium also prolonged catalyst life. After 22 h the acrylic acid selectivity of NaY zeolites reduced to less than 10.0% while that of 3.5K/NaY retained 35.6%. Characterizations with NH3-TPD, CO2-TPD, N2 adsorption and thermal analysis techniques revealed that the enhancement of catalytic performances could be attributed to the tuned acidity/basicity and the potassium electronic promoter effect.",

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TY - JOUR

T1 - Potassium modified NaY

T2 - A selective and durable catalyst for dehydration of lactic acid to acrylic acid

AU - Sun, Peng

AU - Yu, Dinghua

AU - Fu, Kaimei

AU - Gu, Mingyan

AU - Wang, Yang

AU - Huang, He

AU - Ying, Hanjie

PY - 2009/4/25

Y1 - 2009/4/25

N2 - Potassium modification significantly improved the selectivity and durability of NaY zeolites during lactic acid dehydration reaction. The selectivity of 2.8K/NaY zeolites improved from 14.8% to 50.0% over NaY catalyst. Adding potassium also prolonged catalyst life. After 22 h the acrylic acid selectivity of NaY zeolites reduced to less than 10.0% while that of 3.5K/NaY retained 35.6%. Characterizations with NH3-TPD, CO2-TPD, N2 adsorption and thermal analysis techniques revealed that the enhancement of catalytic performances could be attributed to the tuned acidity/basicity and the potassium electronic promoter effect.

AB - Potassium modification significantly improved the selectivity and durability of NaY zeolites during lactic acid dehydration reaction. The selectivity of 2.8K/NaY zeolites improved from 14.8% to 50.0% over NaY catalyst. Adding potassium also prolonged catalyst life. After 22 h the acrylic acid selectivity of NaY zeolites reduced to less than 10.0% while that of 3.5K/NaY retained 35.6%. Characterizations with NH3-TPD, CO2-TPD, N2 adsorption and thermal analysis techniques revealed that the enhancement of catalytic performances could be attributed to the tuned acidity/basicity and the potassium electronic promoter effect.

KW - Dehydration

KW - Durability

KW - Lactic acid

KW - NaY

KW - Potassium

KW - Selectivity

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DO - 10.1016/j.catcom.2009.02.019

M3 - 文章

AN - SCOPUS:63749091034

SN - 1566-7367

VL - 10

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EP - 1349

JO - Catalysis Communications

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Potassium modified NaY: A selective and durable catalyst for dehydration of lactic acid to acrylic acid

Abstract

Keywords

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