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자주 묻는 질문: 휴대용 XRF를 이용한 자동차 촉매 변환기 재활용

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귀금속용 Vanta 휴대용 XRF 분석기

We sat down with Peter Faulkner, our Director of Market Development for analytical instruments, to discuss that latest industry trends for car catalyst recycling.

Q: Why are car catalysts valuable?

A: Each catalytic converter manufacturer has their own formula that they’ve developed to reduce the emission of incomplete combustion products, like carbon monoxide.

The core of each catalytic converter is an internal ceramic honeycomb structure that has a washcoat containing platinum (Pt), palladium (Pd), and rhodium (Rh). Other beneficial elements may also be present.

Platinum, palladium, and rhodium are called platinum-group metals (PGMs), and they’re very valuable. In addition to their useful catalytic properties, they’re also resistant to wear, making them, especially platinum, a sought after metal for making jewelry. Because of their value, recycling these metals from catalytic converters is important.

Platinum

Q: How is XRF used in the recycling process?

A: An X-ray fluorescence (XRF) analyzer can measure material chemistry on the spot to identify platinum, palladium, and rhodium. Along with knowledge of the converter type, XRF analyzers enable fast sorting using a handheld device that can provide results in seconds.

Q: What is a washcoat?

A: The catalytic converters are coated with an aluminum oxide layer (also known as washcoat) along with PGM additives, which serve as the catalysts, and other elements during their manufacture. Converters containing the washcoat substrate, known as cordierite, compose about 95% of the automotive market.

Palladium

Q: Are there issues with fraud in recycling car catalysts?

A: Handheld XRF analyzers are optimized with an element suite to account for all possible matrix effects and/or elemental overlaps. For example, selenium and tantalum have been used interchangeably to falsely increase platinum values. This is done with the foreknowledge that XRF concentration values could be tricked by the overlapping characteristic energies of the elements. However, Vanta™ analyzers have algorithms in place to distinguish one from the other to recognize this kind of fraud.

Rhodium

Related Content

How Vanta Analyzers Make Car Catalyst Recycling More Efficient

Automotive Catalytic Converter Recycling

Vanta for Car Catalyst Recycling


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마케팅 전문가, 분석 장비

Michelle은 마케팅 커뮤니케이션에 9년 이상의 경력을 가지고 있으며, Olympus의 분석 장비 사업에서 X선 형광 및 X선 회절 분석기를 담당하고 있습니다. 그녀는 신제품 출시를 위해 제품, 엔지니어링 및 학술 지원 그룹과 협력하여 웨비나를 제작하고 애플리케이션 노트를 작성합니다.

11월 25, 2019
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