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A 10%Co/ZrO 2 catalyst prepared by impregnation was tested for its activity for the oxidation of CO to CO 2 in excess oxygen. Activity tests showed that conversion could be obtained at temperatures as low as 20°C. Timeon-stream studies showed no loss of activity in these experiments, indicating that this catalyst is stable in the experimental oxidizing conditions. The activation energy for the CO to CO 2 oxidation reaction was calculated as E a = 54 kJ/mol over this catalyst. Characterization of the material by thermogravimetric analysis, temperature-programmed techniques, X-ray photoelectron spectroscopy, and laser Raman spectroscopy indicate that Co 3 O 4 is present on monoclinic ZrO 2 after the calcination of the catalyst.

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NO 2 reduction with methane under lean conditions is studied as a part of a two-stage scheme where NO is first oxidized to NO 2 over an oxidation catalyst and NO 2 is subsequently reduced to N 2 over a reduction catalyst. Pd supported on a sulfated monoclinic zirconia support was observed to have good activity for the reduction of NO 2 with CH 4 under lean conditions, giving N 2 yields over 60% over a broad temperature range below 450°C. Sulfate groups are shown to be thermally stable below the calcination temperature.

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As mass timber structures become more commonly used in the United States, laboratory acoustical data is needed to guide the design of these buildings. In the fall of 2019, a laboratory test program of airborne isolation per ASTM E90 and impact isolation per ASTM E492 of mass timber floor-ceiling assemblies was undertaken. Cross Laminated Timber (CLT), Dowel Laminated Timber (DLT) and Mass Plywood Panel (MPP) panel types were tested with ceiling conditions selected based on 2021 IBC fire code requirements. Comparisons will be made between panel types and other contemporary building types using broadband, low, and high frequency metrics.