MAGNETIC HIERARCHICAL CATALYSTS OF NANOPARTICLES AND ENZYMES FORMING MESOPOROUS ASSEMBLIES EMBEDDED IN MACROPOROUS SCAFFOLDS, AND THEIR USE WITH MAGNETICALLY-DRIVEN REACTORS AND IN CHEMICAL REACTIONS

摘要

A hierarchical catalyst composition comprising a continuous or particulate macroporous scaffold in which is incorporated mesoporous aggregates of magnetic nanoparticles, wherein an enzyme is embedded in mesopores of the mesoporous aggregates of magnetic nanoparticles. Methods for synthesizing the hierarchical catalyst composition are also described. Also described are processes that use the recoverable hierarchical catalyst composition for depolymerizing lignin, remediation of water contaminated with aromatic substances, polymerizing monomers by a free-radical mechanism, epoxidation of alkenes, halogenation of phenols, inhibiting growth and function of microorganisms in a solution, and carbon dioxide conversion to methanol. Further described are methods for increasing the space time yield and/or total turnover number of a liquid-phase chemical reaction that includes magnetic particles to facilitate the chemical reaction, the method comprising subjecting the chemical reaction to a plurality of magnetic fields of selected magnetic strength, relative position in the chemical reaction, and relative motion.

主权项

1. A hierarchical catalyst composition comprising a continuous macroporous scaffold in which is incorporated self-assembled mesoporous aggregates of magnetic nanoparticles, wherein a first enzyme is embedded in said mesopores of the mesoporous aggregates of magnetic nanoparticles, wherein said enzyme functions by converting a diffusible substrate into a diffusible product.