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Chemistry, Ames Laboratory

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The morphology of heterogeneous catalysts can impact their performance by controlling the efficiency of heat and mass transfer. However, standard manufacturing methods such as extrusion or pelleting offer little options for optimizing catalyst shape. Herein, stereolithographic (SLA) 3D printing is used to directly produce catalysts with controlled morphologies to enhance their performance. A series of chemically active magnetic stir-bar compartments (SBC) were 3D printed and used as catalysts for sucrose hydrolysis. The SBCs were composed of acrylic acid (AA) and 1,6-hexanediol diacrylate (HDDA) which provided acid sites and hydrophobic crosslinking domains, respectively. Fixing the surface area and the number of accessible catalytic sites of the 3D printed SBC allowed exploring the effect of changes in morphology on the fluid dynamics of the reaction systems, and consequently on the efficiency of the catalytic hydrolysis. Moreover, varying the AA:HDDA ratios in SBC allowed tuning the surface-substrate interaction to control their catalytic activity for the hydrolysis of sucrose. This work demonstrates that 3D printing catalytic materials enable optimizing catalyst performance by simultaneously controlling macroscopic and molecular properties.


This is a pre-print of the article Manzano, J. Sebastián, Hsin Wang, Long Qi, and Igor Slowing. "Macroscale Control of Reactivity using 3D Printed Materials with Intrinsic Catalytic Properties." ChemRxiv (2019). DOI: 10.26434/chemrxiv.11419104.v1. Posted with permission.

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Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

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