{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp09_archetype_breadth150_20260804","research_id":"eoa_inverse_innovation_exp09_light_prior_art_20260804","cell_id":"catalytic_pathway_enablement__chemistry_materials","search_lanes":{"direct_problem_and_intervention":{"queries":["PET cotton textile recycling immobilized catalyst glycolysis heterogeneous reusable catalyst","polyester cotton blend glycolysis catalyst cellulose preservation","PET cotton textile alcoholysis ethylene glycol heterogeneous catalyst","textile-to-textile PET cotton chemical recycling catalyst patent"],"source_ids":["SRC1","SRC2","SRC3"],"no_result_note":null},"synonyms_and_historical_terms":{"queries":["polycotton selective alcoholysis transesterification cotton recovery","base-catalyzed alcoholysis polyester cotton fabric","PET cloth waste solvolysis cotton preservation"],"source_ids":["SRC1","SRC2"],"no_result_note":null},"products_practices_and_standards":{"queries":["patent immobilized catalyst cartridge PET glycolysis flow reactor","supported catalyst packed bed PET glycolysis continuous reactor","OSHA laboratory standard hazardous chemicals heating pressure official"],"source_ids":["SRC3","SRC4"],"no_result_note":null},"component_combination":{"queries":["polycotton PET glycolysis heterogeneous supported catalyst cotton","PET glycolysis catalytic filter immobilized transesterification catalyst","removable regenerable catalyst cartridge polycotton glycolysis"],"source_ids":["SRC1","SRC3"],"no_result_note":"No opened source disclosed the complete combination of PET–cotton feed, removable structured catalytic cartridge, matched inert-packing control, cotton molecular/mechanical acceptance limits, leaching qualification, and post-batch regeneration across reuse cycles."}},"sources":[{"source_id":"SRC1","title":"Selective Glycolysis of Polyester/Cotton Blended Fibers Using Zinc Acetate Catalysts","publisher":"The Korean Fiber Society","url":"https://www.kci.go.kr/kciportal/ci/sereArticleSearch/ciSereArtiView.kci?sereArticleSearchBean.artiId=ART003181236","source_type":"PRIMARY_RESEARCH","claims_supported":["Polyester/cotton blends are difficult to process using existing recycling methods.","Zinc-acetate-catalyzed glycolysis selectively degraded polyester to BHET while preserving cotton fibers.","Selective polyester conversion from blended textiles is already an experimentally studied pathway."]},{"source_id":"SRC2","title":"Depolymerization of PET with ethanol by homogeneous iron catalysts applied for exclusive chemical recycling of cloth waste","publisher":"Royal Society of Chemistry","url":"https://pubs.rsc.org/en/content/articlehtml/2024/im/d4im00081a","source_type":"PRIMARY_RESEARCH","claims_supported":["PET alcoholysis performance depends strongly on catalyst loading, temperature, and residence time.","A homogeneous FeCl3 route achieved greater than 99% PET conversion and cotton mass recovery from a 65/35 PET–cotton textile at 180 degrees Celsius.","Prior PET recycling methods can require harsh temperature or pressure and create product-separation, purification, and wastewater burdens.","The study measured cotton recovery gravimetrically but did not establish retained cotton molecular weight or mechanical strength."]},{"source_id":"SRC3","title":"PROCESS AND ACTIVE CATALYST FOR THE GLYKOLYSIS OF POLYETHYLENE TEREPHTHALATE (PET)","publisher":"Justia Patents","url":"https://patents.justia.com/patent/20250304761","source_type":"OTHER","claims_supported":["The patent application discloses a PET-glycolysis reactor containing a catalytic filter with a bound transesterification catalyst immobilized on fiber material.","It describes stationary catalytic-filter sections, flow of PET/EG reactants through the catalyst, contaminant filtering, residence-time control, and avoidance of catalyst contamination in product and effluent.","It expressly identifies homogeneous-catalyst carryover and difficulty recovering fine heterogeneous catalyst particles as process problems.","It substantially overlaps the proposal's immobilized flow-interface catalyst architecture, although it does not disclose the proposal's complete PET–cotton regeneration-and-qualification protocol."]},{"source_id":"SRC4","title":"1910.1450 - Occupational exposure to hazardous chemicals in laboratories","publisher":"Occupational Safety and Health Administration","url":"https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1450","source_type":"OFFICIAL_STANDARD","claims_supported":["Laboratory use of hazardous chemicals requires a written Chemical Hygiene Plan where the standard applies.","The plan must address operating procedures, engineering controls, personal protective equipment, functioning protective equipment, training, waste removal, and circumstances requiring prior approval.","Unknown laboratory byproducts must be treated as hazardous, supporting containment and characterization before release."]}],"problem_evidence":{"status":"PARTLY_SUPPORTED","finding":"The problem is visible: primary studies describe PET–cotton blends as difficult to recycle, demonstrate catalyst-dependent selective polyester alcoholysis, and show strong temperature, time, and catalyst-loading effects. Sources also identify catalyst carryover and downstream purification burdens. However, the retained evidence does not directly establish the proposal's exact mild operating window or quantify the asserted tradeoff using cotton molecular-weight, fiber-strength, discoloration, and residence-time acceptance limits.","source_ids":["SRC1","SRC2","SRC3"]},"closest_prior_art":[{"name":"Immobilized fiber-based catalytic filter for PET glycolysis","source_ids":["SRC3"],"overlap":"Discloses a bound transesterification catalyst immobilized on a stationary fibrous filter in a PET/ethylene-glycol reactor, with reactant flow through the catalytic structure, contaminant handling, residence-time effects, and reduced catalyst carryover.","remaining_difference":"The opened disclosure does not specifically demonstrate removable cartridge regeneration on PET–cotton feed, repeated batch qualification, matched inert packing, or preservation of cotton molecular and mechanical properties."},{"name":"Selective zinc-acetate glycolysis of polyester/cotton blended fibers","source_ids":["SRC1"],"overlap":"Directly addresses selective conversion of polyester in PET–cotton blends to BHET while preserving cotton.","remaining_difference":"The catalyst is not disclosed as an immobilized, removable, regenerable structured cartridge with containment and multi-cycle release criteria."},{"name":"FeCl3-catalyzed selective alcoholysis of PET/cotton cloth waste","source_ids":["SRC2"],"overlap":"Demonstrates selective catalytic PET transesterification, quantitative cotton mass recovery, product analysis, and the dependence of conversion on severity, catalyst amount, and time.","remaining_difference":"It uses freely dispersed homogeneous catalyst at 160–180 degrees Celsius and does not establish cartridge turnover, leaching containment, or retained cotton molecular/mechanical quality."}],"prior_art_disposition":"SUBSTANTIAL_COLLISION","contrastive_claim_remaining":"Under a predeclared cotton-preserving bulk-input envelope, a removable immobilized-catalyst cartridge—not merely a stationary catalytic filter or dispersed catalyst—produces a statistically repeatable acceleration over inert structured packing through at least three qualified uses, while meeting quantitative cotton molecular/mechanical integrity, target-product, unidentified-byproduct, pressure-drop, and catalyst-leaching limits after each regeneration.","contrastive_claim_falsifier":"The claim is falsified if inert packing matches the conversion-time profile; the apparent advantage disappears after controlling feed, flow, surface area, or leached catalyst; cotton or product limits are breached; or post-regeneration activity, selectivity, containment, or pressure drop fails during either reuse cycle.","gates":{"adequate_source_search":{"status":"PASS","rationale":"Four search lanes covered direct phrasing, polycotton/alcoholysis terminology, relevant reactor and laboratory practices, and component combinations. Exactly four opened sources from four publishers were retained, including primary studies and an official standard.","source_ids":["SRC1","SRC2","SRC3","SRC4"]},"supported_problem":{"status":"PASS","rationale":"The literature supports a real blend-separation challenge, catalyst-sensitive PET cleavage kinetics, cotton-selectivity concerns, and catalyst recovery or contamination burdens, although the exact proposed mild-window tradeoff remains only partly evidenced.","source_ids":["SRC1","SRC2","SRC3"]},"distinct_testable_claim":{"status":"PASS","rationale":"Despite substantial architectural collision, the remaining cartridge-specific claim is distinguishable and falsifiable through matched inert controls, multi-cycle qualification, leaching assays, and quantitative cotton-integrity measurements.","source_ids":["SRC1","SRC2","SRC3"]},"bounded_next_test":{"status":"PASS","rationale":"Paired small sealed reactors followed by two regenerated reuse cycles are bounded and directly measure conversion-time curves, products, cotton integrity, leaching, pressure drop, and retained catalyst activity without authorizing scale-up.","source_ids":["SRC1","SRC2","SRC4"]},"no_obvious_safety_or_authority_stop":{"status":"PASS","rationale":"Hot glycol or alcohol, pressure, catalyst exposure, and unknown byproducts require local hazard review and controls, but no categorical stop is apparent. The proposed process-safety approval, sealed small inventory, containment, quench/isolation procedure, and waste retention align with OSHA requirements for SOPs, controls, prior approval, and treatment of unknown byproducts as hazardous.","source_ids":["SRC4"]}},"screen_survival":false,"world_novelty_boundary":"This bounded public-web screen found substantial collision in the core immobilized catalytic-filter architecture and adjacent demonstrations of selective PET–cotton alcoholysis. It cannot establish world novelty, patentability, freedom to operate, market size, expert acceptance, scale-up performance, or realized environmental or economic value."}