The　Delplot　method　provides　a　means　of　analyzing　conversion　and　selectivity　data　to　derive　a　reaction　sequence　and　has　been　applied　so　far　to　gas-phase　or　liquid-phase　species.　This　study　analyses　the　applicability　of　the　method　for　catalytic　reactions　and　considers　for　the　first　time　adsorbed　intermediates.　The　method　is　applied　to　a　contact　time　study　of　the　hydrodeoxygenation　(HDO)　of　benzofuran　at　0.5　MPa　and　350　degrees　C　over　a　catalyst　consisting　of　bimetallic　CoPd　phosphide　supported　on　a　potassium　ion-exchanged　ultra-stable　Y　(KUSY)　zeolite.　Both　simple　and　detailed　reaction　networks　were　derived.　The　simple　networks　considered　only　gas-phase　species　and　were　modeled　by　a　first-order　sequence　of　steps,　whereas　the　detailed　network　took　into　account　adsorbed　intermediates　and　was　simulated　using　a　rake　mechanism.　The　networks　were　compared　using　F-statistics,　which　accounted　for　the　differences　in　the　number　of　fitting　parameters.　The　detailed　network　gave　a　better　fit　to　the　experimental　data　because　it　represented　a　more　realistic　description　of　the　transformation.　A　suggested　sequence　from　the　Delplot　method　was　consistent　with　the　simple　network　but　not　with　the　detailed　network.　The　lack　of　applicability　of　the　Delplot　analysis　to　the　network　with　adsorbates　was　linked　to　overly　large　equilibrium　constants,　a　determination　supported　by　Delplot　fitting　for　a　model　sequence.　This　study　indicated　the　inapplicability　of　the　Delplot　method　in　determining　reaction　sequences　that　involve　adsorbed　species　with　large　equilibrium　constants　for　formation.　(c)　2021　Elsevier　Inc.　All　rights　reserved.