{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11278875","patent":{"patent_number":"US-11278875","title":"Direct synthesis of metal-containing CHA zeolites","assignee":null,"inventors":[],"filing_date":"2019-12-20T00:00:00.000Z","publication_date":"2022-03-22T00:00:00.000Z","cpc_codes":["G01N"],"num_claims":19,"abstract":"A metal-containing chabazite zeolite, which has an FTIR peak area ratio between the peak at 900-1300 cm−1 (Si—O—Si asymmetric stretch) and the peak at 765-845 cm−1 (˜805 cm−1 is Si—O—Si symmetric stretch) of at least 55. A method for preparing metal-containing CHA zeolites with high SCR activity at low reaction temperatures from alkali cation-free reaction mixtures that contain the three OSDA structures: metal-polyamine, N,N,N-trimethyl-1-adamantyl ammonium (TMAda+) and TMAOH. The metal-containing CHA zeolites produced by the disclosed method can be identified by XRD, FTIR spectroscopy, FT-VIS spectroscopy, and scanning electron microscopy. A method of selective catalytic reduction of NOx in exhaust gas using the material described herein is also disclosed."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Direct synthesis of metal-containing CHA zeolites","description":"A metal-containing chabazite zeolite, which has an FTIR peak area ratio between the peak at 900-1300 cm−1 (Si—O—Si asymmetric stretch) and the peak at 765-845 cm−1 (˜805 cm−1 is Si—O—Si symmetric stre","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11278875","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-11278875","citation_suggestion":"Patentable. \"Direct synthesis of metal-containing CHA zeolites\" (US-11278875). https://patentable.app/patents/US-11278875","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11278875","json":"https://patentable.app/api/llm-context/US-11278875","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T14:07:33.679Z"}