A Mesoporous Aluminosilicate Nanoparticle-Supported Nickel-Boron Composite for the Catalytic Reduction of Nitroarenes
Lawrence Berkeley National Laboratory Recent Work Title A Mesoporous Aluminosilicate Nanoparticle-Supported Nickel-Boron Composite for the Catalytic Reduction of Nitroarenes Permalink https://escholarship.org/uc/item/02m7d916 Journal ACS Applied Nano Materials, 2(3) ISSN 2574-0970 Authors Hauser, JL Amberchan, G Tso, M et al. Publication Date 2019-03-22 DOI 10.1021/acsanm.8b02351 Peer reviewed eScholarship.org Powered by the California Digital Library University of California Article Cite This: ACS Appl. Nano Mater. XXXX, XXX, XXX−XXX www.acsanm.org A Mesoporous Aluminosilicate Nanoparticle-Supported Nickel− Boron Composite for the Catalytic Reduction of Nitroarenes † † † † ‡ Jesse L. Hauser, Gabriella Amberchan, Monique Tso, Ryan Manley, Karen Bustillo, § † † † Jason Cooper, Josh H. Golden, Bakthan Singaram,*, and Scott R. J. Oliver*, † Department of Chemistry and Biochemistry, University of California, Santa Cruz, Santa Cruz, California 95064, United States ‡ § National Center for Electron Microscopy, Molecular Foundry, and Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States *S Supporting Information ABSTRACT: An amorphous nickel and boron composite (NBC) was synthesized from nickel chloride hexahydrate · (NiCl2 6H2O) and sodium borohydride (NaBH4) in absolute ethanol, both in bulk and supported on mesoporous alumi- nosilicate nanoparticles (MASN). Comparatively, NBC-MASN demonstrated better catalytic activity for the selective reduction of the nitro group on a variety of polysubstituted nitroarenes, · using hydrazine hydrate (N2H4 H2O) as the reducing agent at 25 °C. Reuse and regeneration of NBC-MASN for the reduction of p-nitrotoluene to p-toluidine were studied with NaBH4 acting as a regeneration agent. Good catalytic activity was sustained through nine reuse cycles when equimolar NaBH4 was present in situ with · − N2H4 H2O (99% 67% isolated aniline yield).
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