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Pd/TiO2 coatings with template-controlled mesopore structure as highly active hydrogenation catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
39371 45821 2015 8 PDF Available
Title
Pd/TiO2 coatings with template-controlled mesopore structure as highly active hydrogenation catalyst
Abstract

•New strategy for the direct synthesis of highly active wall-coated catalysts.•Template-controlled mesoporous Pd/TiO2 catalysts.•Space–time-yields exceed values reported in literature for butadiene hydrogenation.•Approach is generic in nature and can be adapted to other noble metals and supports.

Micro-structured reactors offer excellent mass and heat transport capabilities and can therefore sustain very high reaction rates and space–time-yields also for highly exothermic catalytic reactions. However, such high rates cannot be reached when the reactors are coated or filled with conventional catalysts powders. We present a strategy for the direct synthesis of highly active wall-coated supported catalysts via co-deposition of a pore template (here micelles formed from PEO-b-PPO-b-PEO) and a precursors for the metal oxide (TiCl4) along with a compatible precursor for the active metal (PdCl2). The obtained catalytic coatings possess a template-controlled open pore structure and excellent mechanical stability. Moreover, the active metal is highly dispersed and well-distributed across the coating also at high Pd loadings. The corresponding high activity along with rapid mass transfer enabled by the open pore system results in the best space–time-yields in the gas-phase hydrogenation of butadiene reported so far in literature for a supported catalyst.

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Keywords
Titanium oxide films; Palladium nanoparticle; Wall-coated supported catalysts; Template-controlled mesoporous materials; Hydrogenation of 1,3-butadiene
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 493, 5 March 2015, Pages 25–32
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