fulltext.study @t Gmail

Towards a new membrane micro reactor system for direct synthesis of hydrogen peroxide

Paper ID Volume ID Publish Year Pages File Format Full-Text
53339 46963 2016 10 PDF Available
Title
Towards a new membrane micro reactor system for direct synthesis of hydrogen peroxide
Abstract

•Two- and three-dimensional single and multiphase models for direct hydrogen peroxide synthesis have been adopted.•A promising new membrane micro reactor was designed based on simulations and a reactor design previously established.•The production of hydrogen peroxide has been shown experimentally in a first proof of concept.

The approach of producing hydrogen peroxide (H2O2) by direct catalyzed reaction of H2 and O2 has been extensively studied over the past decades. The process offers the potential to establish a “green” alternative to the conventional large-scale anthraquinone process. However, the implementation of this reaction still faces major hurdles including safety, selectivity and productivity of the reaction. In this work, we report results on the development of a novel intensified suspension-flow membrane micro reactor system for direct synthesis of hydrogen peroxide as well as on a related flexible micro reactor system for transfer hydrogenation which served as a starting point. In the new reactor system for H2O2 direct synthesis safety issues are greatly reduced by the introduction of a membrane to separate the gaseous reactants. Furthermore productivity is maximized by increased mass transfer in micro channels and constant reactant feeding over the length of the reactor. Finally, the selectivity can be optimized by controlling the reactant distribution in the liquid phase. A rigorous two-dimensional single-phase model based on ANSYS Fluent was adopted to study the influence of the design on the reaction. This model had already been validated in a previous study. By expanding the model to describe the multiphase phenomena we were able to get further insight on the behavior of the overall system.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (128 K)Download as PowerPoint slide

Keywords
Hydrogen peroxide; Direct synthesis; Mass transfer; Membrane; Micro reactor; Suspension-flow catalysis
First Page Preview
Towards a new membrane micro reactor system for direct synthesis of hydrogen peroxide
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 268, 15 June 2016, Pages 85–94
Authors
, , , , , ,
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