Dataset on the analytical co-hydropyrolysis of chilean oak and polyethylene under catalytic and non-catalytic conditions.

Co-hydropyrolysis-fast pyrolysis under a hydrogen atmosphere-offers a thermochemical route for converting plastic residues, co-processed with lignocellulosic biomass feedstocks, into platform hydrocarbons. Hydrogen-rich polymers act as in-situ hydrogen donors, while biomass-derived intermediates engage in pathways that, in the presence of bifunctional catalysts (acid sites coupled with a hydrogenating metal), promote deoxygenation, suppress polycondensation, and steer formation of BTX. A central gap is the absence of open datasets that systematically map operating conditions across matched non-catalytic (blank) and catalytic regimes within a consistent experimental framework, including raw spectra, machine-readable peak tables, and complete catalyst descriptors. Addressing this need, an open, standardized dataset is reported from a systematic study of co-hydropyrolysis of Chilean Oak with high- and low-density polyethylene in an analytical micropyrolyzer coupled to GC-MS (Py-GC-MS). Catalytic effects are quantified against catalyst-free baseline runs conducted under identical temperature, heating rate, vapour-residence time, hydrogen pressure, and feed ratio, using GC-MS relative peak areas by compound and family. Together with raw MS files, curated peak tables, operating metadata, and full catalyst descriptors (TGA, XRD, TEM, N2 physisorption, NH3-TPD; SEM-EDX available in the repository), the dataset provides an analytical basis for delineating operational windows for co-hydropyrolysis and informing process development, scale-up, and assessments of commercial viability.