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

Paper ID Volume ID Publish Year Pages File Format Full-Text
52779 46886 2009 5 PDF Available
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.

Keywords
Potassium; NaY; Selectivity; Durability; Lactic acid; Dehydration
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Potassium modified NaY: A selective and durable catalyst for dehydration of lactic acid to acrylic acid
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 10, Issue 9, 25 April 2009, Pages 1345–1349
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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