Dataset to accompany 'Operational parameters relevant to the examination of phosgene synthesis catalysis' for publication in Reaction Chemistry & Engineering. Authors: Rory Hughes, Giovanni E. Rossi and David Lennon This dataset was created using Origin 2020 (Academic) Folder 'Figure 3' contains the raw data for the IR spectra for Figure 3. Folder 'Figure 4' contains the raw data for the UV/Vis spectra for Figure 4. Folder 'Figure 5' contains the quantification of the raw data from Figures 3 and 4 to create a reaction profile. Folder 'Figure 6' contains the quantification of the raw data from Figures 3 and 4 to create a mass balance profile. Folder 'Figure 7' contains the raw IR and UV/Vis spectra collected ('Figure 7 Spectra') as well as the quantification of this data into a mass balance profile ('Figure 7 Quantification'). Folder 'Figure 8' contains the raw IR and UV/Vis spectra collected ('Figure 8 Spectra'), the quantification of this data into a molar flow rate ('Figure 8 Quantification'), as well as the collated data and catalyst effectiveness factor calculations ('Figure 8 Plot'). Folder 'Figure 9' contains the raw IR and UV/Vis spectra collected ('Figure 9 Spectra'), the quantification of this data into a molar flow rate ('Figure 9 Quantification'), as well as the collated data ('Figure 9 Plot'). Folder 'Figure 10' contains the raw data for the IR spectra for Figure 10. Folder 'Figure 11' contains the raw data for the UV/Vis spectra for Figure 11. Folder 'Figure 12' contains the quantification of the raw data from Figures 10 and 11 to a molar flow rate. In addition, the data is further quantified to fit the form of an Arrhenius plot as well as calculations of the reaction activation energy and carbon monoxide consumption.