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Catalyst development for the dehydrogenation of MCH in a microstructured membrane reactor—For heat storage by a Liquid Organic Reaction Cycle

Paper ID Volume ID Publish Year Pages File Format Full-Text
53836 46986 2015 10 PDF Available
Title
Catalyst development for the dehydrogenation of MCH in a microstructured membrane reactor—For heat storage by a Liquid Organic Reaction Cycle
Abstract

•A novel heat storage cycle based on a Liquid Organic Reaction Cycle (LORC).•A highly active 1 wt% Pt/Al2O3 catalyst coating for dehydrogenation of methylcyclohexane.•High total pressure and high partial pressure H2 in a microstructured membrane reactor would favor low catalyst deactivation rate.

Liquid organic hydrides can act as energy storage from renewable sources in a cycle of hydrogenation and dehydrogenation. In this work, a feasibility study for heat storage by methylcyclohexane dehydrogenation as a system component in a Liquid Organic Reaction Cycle (LORC) is presented. The endothermic dehydrogenation of methylcyclohexane was investigated in a microstructured reactor, in order to supply reaction heat efficiently. The integration of a membrane into the microstructured reactor for in-situ pure hydrogen removal is intended in further studies.In order to obtain an efficient microstructured membrane reactor, basic catalyst studies were performed. For this purpose different catalysts were prepared and applied to the microstructured reactor. A catalyst containing Pt as active metal and Al2O3 as porous support was selected as the most active catalyst and it was further characterized by BET, H2 chemisorption, SEM, EPMA and ICP-OES. The different catalysts deactivated rapidly by coke formation at the entrance of the microstructured reactor. Carbon black was analyzed on the catalyst surface by Raman spectroscopy. The addition of H2 or a higher pressure level in the reaction zone delayed the deactivation rate considerably. Therefore, the utilization of a microstructured membrane reactor is beneficial; it provides conditions to reduce coke formation like a higher reaction pressure and continuous H2 partial pressure in the catalyst zone if sweep gas is absent on the permeate side of the membrane.

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Keywords
Methylcyclohexane dehydrogenation; Microstructured reactor; Catalyst coating; Platinum catalyst; Kinetic model; Deactivation; Palladium membrane
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Catalyst development for the dehydrogenation of MCH in a microstructured membrane reactor—For heat storage by a Liquid Organic Reaction Cycle
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 242, Part A, 15 March 2015, Pages 211–220
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