Projects per year
Abstract
Hydrogen peroxide (H2O2) has a wide application range in industry. It is a strong oxidant used e.g. for bleaching, water treatment, semiconductor wafer cleaning and propylene oxide synthesis. It is produced on large scale by the anthraquinone process to yield highly concentrated (50–70 wt%) product in a routine fashion. Nevertheless, this process is very energy consuming, generates a lot of waste and requires transport of hazardous quantities of H2O2. Therefore, direct H2O2 synthesis (starting from gaseous H2 and O2; Figure) has recently emerged as a viable alternative.[1] Flow chemistry using microreactor technology has made its entry into this field, offering opportunities for safer and efficient process operation.[2]
Metal catalysts supported on strongly acidic macroreticular polystyrene resins have also been applied for this transformation.[3] In this work, we describe a transfer of this type of catalysis into flow technology. The preparation and characterization of the catalysts are described, followed by a presentation of their catalytic performances. Having found the optimal values for gas and liquid flow rates, gas ratio and catalyst mass, we further focused onto the importance of the immobilization solvent, reductive treatment and %Pd (and/or other metals) loaded. Our results (~1% wt. H2O2, ~60 % selectivity vs. H2O) are superior to most current literature results.
References
[1] J. M. Campos-Martin, G. Blanco-Brieva, J. L. G. Fierro, Angew. Chem., Int. Ed.
2006, 45, 6962.
[2] T. Inoue et al, Chem. Eng. J. 2010, 160, 909; T. Inoue et al, Catal. Today 2015, 248, 169; T. Inoue et al, Fuel Process. Technol. 2013, 108, 8.
[3] G. Blanco-Brieva et al, Chem. Commun. 2004, 1184; C. Burato et al, Appl. Catal., A 2009, 358, 224; J. Kim et al, ACS Catal. 2012, 2, 1042; S. Sterchele et al, Appl. Catal., A 2013, 468, 160.
Metal catalysts supported on strongly acidic macroreticular polystyrene resins have also been applied for this transformation.[3] In this work, we describe a transfer of this type of catalysis into flow technology. The preparation and characterization of the catalysts are described, followed by a presentation of their catalytic performances. Having found the optimal values for gas and liquid flow rates, gas ratio and catalyst mass, we further focused onto the importance of the immobilization solvent, reductive treatment and %Pd (and/or other metals) loaded. Our results (~1% wt. H2O2, ~60 % selectivity vs. H2O) are superior to most current literature results.
References
[1] J. M. Campos-Martin, G. Blanco-Brieva, J. L. G. Fierro, Angew. Chem., Int. Ed.
2006, 45, 6962.
[2] T. Inoue et al, Chem. Eng. J. 2010, 160, 909; T. Inoue et al, Catal. Today 2015, 248, 169; T. Inoue et al, Fuel Process. Technol. 2013, 108, 8.
[3] G. Blanco-Brieva et al, Chem. Commun. 2004, 1184; C. Burato et al, Appl. Catal., A 2009, 358, 224; J. Kim et al, ACS Catal. 2012, 2, 1042; S. Sterchele et al, Appl. Catal., A 2013, 468, 160.
Original language | English |
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Pages | P15 |
Number of pages | 1 |
Publication status | Published - 10 Dec 2015 |
Event | 19th SIGMA-ALDRICH Organic Synthesis Meeting - Duinse Polders, Blankenberge (BEL), Belgium Duration: 10 Dec 2015 → 11 Dec 2015 |
Symposium
Symposium | 19th SIGMA-ALDRICH Organic Synthesis Meeting |
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Country | Belgium |
City | Blankenberge (BEL) |
Period | 10/12/15 → 11/12/15 |
Keywords
- flow chemistry, hydrogen peroxide
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Projects
- 1 Finished
Equipment
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Physical Chemistry and characterization(PC2)
Johan Wouters (Manager) & Carmela Aprile (Manager)
Technological Platform Physical Chemistry and characterizationFacility/equipment: Technological Platform
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Transmission electron microscope
Charles Nicaise (Manager) & Francesca Cecchet (Manager)
Technological Platform Morphology - ImagingFacility/equipment: Equipment
Activities
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FLOW CHEMISTRY WORKSHOP 2016
Eduard Dolusic (Poster)
18 Jan 2016 → 19 Jan 2016Activity: Participating in or organising an event types › Participation in workshop, seminar, course
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19th SIGMA-ALDRICH Organic Synthesis Meeting
Eduard Dolusic (Poster)
10 Dec 2015 → 11 Dec 2015Activity: Participating in or organising an event types › Participation to a Symposium, a study Day
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Flow Chemistry Europe 2015
Eduard Dolusic (Poster)
17 Feb 2015Activity: Participating in or organising an event types › Participation in conference