fulltext.study @t Gmail

Methanol dehydration to dimethyl ether in a platelet milli-reactor filled with H-ZSM5/SiC foam catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
41065 45876 2011 9 PDF Available
Title
Methanol dehydration to dimethyl ether in a platelet milli-reactor filled with H-ZSM5/SiC foam catalyst
Abstract

Milli-structured reactors and process miniaturization have received an over increasing scientific interest during the last decades for the development of new generation of catalytic systems, which can find application in several catalytic processes. Here we report the development of a platelet milli-structured reactor filled with ceramic SiC foam with open porosity, high mixing efficiency, fully accessible surface area and low pressure drop. The SiC support was coated with a homogeneous layer of H-ZSM5 zeolite acting as an active phase for the catalytic dehydration of methanol into dimethyl ether. This hybrid catalyst shows an excellent and stable dehydration activity even at high space velocity due to the foam structure with high reactants mixing efficiency and better effective surface area. The low diffusion length of the foam strut also provide a high escaping of the product reducing secondary reaction and also carbonaceous residue deposit the catalyst and thus, no deactivation was observed for a long-term test.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (143 K)Download as PowerPoint slideHighlights► SiC foam supported H-ZSM5 zeolite as catalyst. ► Catalysts for methanol dehydration into dimethylether in a platelet millireactor. ► Foam structure allows the low diffusion problem and mixing efficiency. ► No deactivation was observed as a function of time on stream.

Keywords
Milli-structured reactor; ZSM-5/SiC catalyst; Silicon carbide foam; Dimethyl ether; Methanol dehydration
First Page Preview
Methanol dehydration to dimethyl ether in a platelet milli-reactor filled with H-ZSM5/SiC foam catalyst
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volumes 409–410, 15 December 2011, Pages 113–121
Authors
, , , , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis