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In situ raman spectroscopy of solid catalyzed reactions in supercritical co2 within a si/glass microreactor

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TLDR
In this article, the in situ monitoring of a solid catalyzed reaction by Raman spectroscopy in a packed bed Si/glass microreactor up to pressures of 10 MPa is reported.
Abstract
We report the in situ monitoring of a solid catalyzed reaction by Raman spectroscopy in a packed bed Si/glass microreactor up to pressures of 10 MPa. Reactant and product concentrations in the microreactor are analyzed during the hydrogenation of cyclohexene mediated by supercritical CO2 (scCO2) over Pd/Al2O3 catalyst. This study shows the novel opportunities in spectroscopic high pressure reaction profiling which can be performed directly on the presented microreactor. The fast temporal response on changes in flow rates, system pressure and reactor temperature makes the microreactor favorable for efficient optimization of reaction conditions and transient experiments.

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Journal ArticleDOI

Fabrication, mechanical testing and application of high-pressure glass microreactor chips

TL;DR: In this paper, the design, fabrication and high pressure performance of several inplane fiber-based interface geometries to microreactor chips for high pressure chemistry are discussed, and an application is presented.
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Operating characteristics of a transpiring-wall SCWO reactor with a hydrothermal flame as internal heat source

TL;DR: In this paper, a transpiring-wall reactor with a hydrothermal flame as internal heat source has been investigated, where the wall contact of supercritical reaction media is prevented by fluid dynamical means.
Journal ArticleDOI

Transparent silicon/glass microreactor for high-pressure and high-temperature reactions

TL;DR: In this paper, a Si/glass microreactor with soldered microfluidic connections for high-pressure and high-temperature applications is presented, which is applied for a well-described solid catalyzed exothermic hydrogenation at operating conditions up to 51 bar and 71°C.
Journal ArticleDOI

Hydrogenation reactions using scCO2 as a solvent in microchannel reactors

TL;DR: The reactions proceeded very rapidly (within 1 second), by making the best use of scCO(2) and utilizing the large specific interfacial area of the microchannel reactor, and high reaction productivity was attained in each channel.
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