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Reactive separation of dilute ethylene by hydroformylation using slurried rhodium catalysts on phosphinated resins and silica

Paper ID Volume ID Publish Year Pages File Format Full-Text
51847 46856 2011 5 PDF Available
Title
Reactive separation of dilute ethylene by hydroformylation using slurried rhodium catalysts on phosphinated resins and silica
Abstract

A series of slurried rhodium catalysts on phosphinated resins and silica were tested for the reactive separation of dilute ethylene by hydroformylation to propanal. The amount of rhodium leaching was determined for most of the systems investigated. Leaching ranged from <2 to 11% for catalytic runs for resin supported systems, but was found to be much more significant for the phosphinated silica system studied, 19%. The level of rhodium leaching correlated well with the loss in rate of propanal formation between repeated experiments using recycled catalysts for the resin based systems, but the loss in rate was much more significant for the silica based system. This level of leaching is very high for a commercial process for basic chemical synthesis, for which leaching is typically at the ppb level. Rates of propanal formation for resin supported catalyst systems correlated well with the cone angle of the free phosphine, with rates as high as 0.35 mol/l/h. However, while smaller cone angles were found to be directly proportional to rate, supported systems were less active than homogeneous counterparts.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights► Synthesis of several polymer resin supported Rhodium catalysts. ► Performed hydroformylation of ethylene to propanal. ► Can be used to reactively separate ethylene from dilute streams. ► Low ethane/byproduct formation.

Keywords
Hydroformylation; Supported catalysts; Propanol; Propanal; Phosphine; Rhodium
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Reactive separation of dilute ethylene by hydroformylation using slurried rhodium catalysts on phosphinated resins and silica
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 12, Issue 14, 15 August 2011, Pages 1323–1327
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