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Highly effective continuous-flow monolithic silica microreactors for acid catalyzed processes

Paper ID Volume ID Publish Year Pages File Format Full-Text
39411 45822 2015 6 PDF Available
Title
Highly effective continuous-flow monolithic silica microreactors for acid catalyzed processes
Abstract

•Con-flow monolithic silica microreactor with active acidic centers was fabricated.•Microreactor operates at low pressure drop due to presence of large macropores.•Reactor shows high activity in esterification of acetic/lactic acid with n-butanol.•The structural and catalytic stability of the microreactor is demonstrated.

This work reports the performance of a new monolithic silica microreactor, activated with sulphonic acid groups in the continuous-flow synthesis of n-butyl acetate and n-butyl lactate. A reactive core of the reactor was made of a single silica rod with bi-continuous structure, containing flow-through pores with diameter in the range of 20–50 μm and mesopores of ca. 20 nm localized in silica struts. This structure resulted in low pressure drop, even at flow rates large enough to eliminate external mass transfer effect on the reaction kinetics. The microreactor functionalized with 0.65 mmol/g of SO3H groups showed high activity and productivity in both esterification reactions carried out in temperatures up to 140 °C. Structural and catalytic stability of the microreactor was confirmed to demonstrate its process viability.

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Keywords
Microreactors; Silica monoliths; Acid catalysis; Esterification; Hierarchical materials
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Highly effective continuous-flow monolithic silica microreactors for acid catalyzed processes
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 489, January 2015, Pages 203–208
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
Online Support
Any Questions? feel free to contact us