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Issue 1, 2019
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Zr-MOF-808@MCM-41 catalyzed phosgene-free synthesis of polyurethane precursors

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Abstract

In this work, a catalytic method is presented for the synthesis of aromatic carbamates from aromatic amines using dimethyl carbonate instead of phosgene as a green and safe reaction process. Microcrystalline Zr-MOF-808 is reported as an active and efficient heterogeneous catalyst for the selective carbamoylation of anilines and industrially relevant aromatic diamines, under mild reaction conditions with near quantitative yields. We have accomplished the selective growth of well-dispersed Zr-MOF-808 nanocrystals within the mesoporous material MCM-41. A superior catalytic performance of the Zr-MOF-808@MCM-41 is demonstrated that together with increased stability stands out as an advantageous heterogeneous catalyst for polyurethane production. In situ FTIR studies have allowed a better understanding of the reaction pathway at the molecular level when the active MOF catalyst is present.

Graphical abstract: Zr-MOF-808@MCM-41 catalyzed phosgene-free synthesis of polyurethane precursors

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Publication details

The article was received on 29 Oct 2018, accepted on 22 Nov 2018 and first published on 29 Nov 2018


Article type: Paper
DOI: 10.1039/C8CY02235F
Catal. Sci. Technol., 2019,9, 146-156

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    Zr-MOF-808@MCM-41 catalyzed phosgene-free synthesis of polyurethane precursors

    S. Rojas-Buzo, P. García-García and A. Corma, Catal. Sci. Technol., 2019, 9, 146
    DOI: 10.1039/C8CY02235F

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