촉매 코팅 막 성분의 재활용

• Main Authors: SPELLER STEPHEN, MCCREE GREY JONATHAN, TURNER JONES MICHAEL, BASRA SHIREEN KAUR, MISTRY KRISHNA
• Format: Patent
• Language: Korean
• Published: 06.12.2024
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; GENERAL PROCESSES OF COMPOUNDING; MAKING GRANULES OR PREFORMS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; PRETREATMENT OF RAW MATERIALS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; PRODUCTION AND REFINING OF METALS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

이오노머 막, 백금, 팔라듐 및/또는 루테늄을 포함하는 적어도 하나의 촉매, 및 이리듐을 포함하는 적어도 하나의 촉매를 포함하는 폐촉매 코팅 막 물질을 재활용하는 방법으로서, 방법은: (a) 폐촉매 코팅 막 물질을 산 및 산화제를 포함하는 가열된 용액으로 처리하는 단계로, 백금, 팔라듐 및/또는 루테늄은 폐촉매 코팅 막 물질로부터 폐촉매 코팅 막 물질의 나머지 고체 성분으로부터 분리되는 용액으로 침출되는 것인, 단계; (b) 폐촉매 코팅 막 물질을 용매로 처리하여 이오노머 막을 분산시키고 이오노머의 분산액을 회수하는 단계로, 이오노머의 분산은 백금, 팔라듐 및/또는 루테늄의 침출 전 또는 후에 수행되는 것인, 단계; 및 (c) 폐촉매 코팅 막 물질을 처리하여 이리듐을 추출하는 단계를 포함한다. A method of recycling a waste catalyst coated membrane material comprising an ionomer membrane, at least one catalyst comprising platinum, palladium and/or ruthenium, and at least one catalyst comprising iridium, the method comprising: (a) treating the waste catalyst coated membrane material with a heated solution comprising an acid and an oxidant, wherein platinum, palladium and/or ruthenium is leached from the waste catalyst coated membrane material into the solution which is separated from remaining solid components of the waste catalyst coated membrane material; (b) treating the waste catalyst coated membrane material with a solvent to disperse the ionomer membrane and recover a dispersion of ionomer, wherein the dispersing of the ionomer is performed before or after the leaching of the platinum, palladium and/or ruthenium; and (c) treating the waste catalyst coated membrane material to extract iridium.