The　synthesis　of　bimetallic　CoPdP　phosphides　supported　on　potassium　ion　exchanged　ultra-stable　Y　(KUSY)　zeolites　was　studied　and　catalytic　activity　tests　on　the　hydrodeoxygenation　of　a　model　pyrolysis　oil　compound,　benzofuran,　were　conducted.　Temperature　programmed　reduction　(TPR)　profiles　revealed　that　Pd　aided　the　reduction　of　the　Co,　lowering　both　the　onset　and　peak　temperatures　for　reduction.　The　catalyst　structure　was　probed　by　X-ray　diffraction　(XRD)　and　extended　X-ray　adsorption　fine　structure　(EXAFS),　which　showed　the　formation　of　CoPdP　alloys.　Fourier-transform　infrared　spectroscopy　was　used　to　probe　the　Co　and　Pd　sites　on　the　surface.　Several　Co:Pd　ratios　were　tested　in　the　range　of　225-350　degrees　C　at　a　medium　pressure　of　0.5　MPa.　Synergistic　effects　were　observed　between　Co　and　Pd,　with　the　alloys　showing　higher　activity　than　the　single　metal　Pd　or　Co　phosphide　catalysts.　High　selectivity　to　unsaturated　high　carbon　number　products　were　obtained　for　the　bimetallic　phosphide　catalysts.　(C)　2021　Elsevier　Inc.　All　rights　reserved.