Author： Hu Xin Ning Yuantao Chen Liangwei Shi Qingnan Jia Chaoguang
Publisher： Johnson Matthey
ISSN： 1471-0676
Source： Platinum Metals Review, Vol.56, Iss.1, 2012-01, pp. : 40-46
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Abstract
The physical properties and some application performance parameters of a platinum-palladium-rhodium-cerium alloy (Pt-4Pd-3.5Rh-0.1Ce) (wt%) are reported. This alloy possesses finer grain size, higher recrystallisation temperature and better mechanical properties, including tensile strength, lasting strength and creep resistance, than traditional Pt-10Rh and Pt-4Pd-3.5Rh catalytic alloys. Catalytic gauzes made of the Pt-4Pd-3.5Rh-0.1Ce alloy also show a higher conversion rate of ammonia to oxides of nitrogen, lower Pt loss rate, improved resistance to corrosion, adhesion and poisoning, and longer service lifetime for nitric acid production than gauzes made of the traditional alloys.
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