Processing of deactivated platinum-rhenium catalysts

Kasikov, L. G.; Петрова, А. Н.

doi:10.1134/s0040579509040320

Cited by 21 publications

(15 citation statements)

References 3 publications

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“…Compared to a catalyst carrying only Pt, the Pt-Re catalyst exhibits excellent durability, maintaining its catalytic activity for 3 to 4 years after loading in a reaction column. [25][26][27] Currently, about 10% of the annual Re demand is for reforming this catalyst (cf. Figure 4).…”

Section: Catalystsmentioning

confidence: 99%

Review: Rhenium and its smelting and recycling technologies

Yagi,

Okabe

2024

International Materials Reviews

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Rhenium is utilized as an additive to improve the high-temperature strength and stability of materials, such as nickel-based superalloys, which are employed in jet engine turbine blades, alloys for ultrahigh-temperature thermocouples, and platinum catalysts, which are used in oil refining. Currently, around 80% of rhenium demand is for superalloy production, and this demand has been increasing with the increase in demand for aircrafts. The abundance of rhenium in the earth's crust is only 1 ppb (10−9), which is less than those of platinum and gold. Owing to the rare and unevenly distributed nature of rhenium, there is the risk of supply disruption and rapid increases in its price. In this article, the recent situation of rhenium and its compounds are reviewed, especially with respect to their demand, distribution characteristics, smelting, and recycling. Some of the technologies recently developed for smelting and recycling rhenium are also introduced.

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Section: Catalystsmentioning

confidence: 99%

Review: Rhenium and its smelting and recycling technologies

Yagi,

Okabe

2024

International Materials Reviews

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“…Two routes have been reported to be able to achieve this; these are illustrated in Fig. 4 and involve the following [29].…”

Section: Recycling Of Spent Pt-re Catalystsmentioning

confidence: 99%

“…The methods used to selectively recover platinum and rhenium from spent catalysts without completely dissolving the alumina substrate vary from calcination of the catalysts to selective leaching in alkaline or acid conditions at ambient and elevated temperatures [29]. By calcining the catalyst at temperatures up to 1150°C, the γ-Al2O3 undergoes a phase transition to the chemically stable α-Al2O3 phase, lowering the dissolution of the alumina catalyst.…”

Section: Selective Leaching Of Rhenium and Platinummentioning

confidence: 99%

Assessment of supply interruption of rhenium, recycling, processing sources and technologies

Kesieme

Chrysanthou

Catulli

2019

International Journal of Refractory Metals and Hard Materials

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“…With the rapid consumption of resources, the recovery and utilization of waste superalloys have become important [3,4]. Rhenium is a kind of rare metal resource that has low global reserves and a stiff price [5]. Therefore, extracting rhenium from waste superalloys is both economically and environmentally significant.…”

Section: Introductionmentioning

confidence: 99%

Studies on Influencing Factors of Ammonium Rhenate Recovery from Waste Superalloy

et al. 2018

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The influencing factors of ammonia content and centrifugal speed on ammonium rhenate recovery from waste superalloy were systematically analyzed. It was found that proper ammonia content and centrifugal speed could promote crystal growth and a higher purity of ammonium rhenate was obtained. Moreover, the XRD patterns showed that excessive ammonia content and inappropriate centrifugal speed restrained the growth of (101) crystal plane and (112) crystal plane, which caused the crystal structural regularity and relative crystallinity to attenuate. The microscopic morphology and purity of the crystal also changed.

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Processing of deactivated platinum-rhenium catalysts

Cited by 21 publications

References 3 publications

Review: Rhenium and its smelting and recycling technologies

Review: Rhenium and its smelting and recycling technologies

Assessment of supply interruption of rhenium, recycling, processing sources and technologies

Studies on Influencing Factors of Ammonium Rhenate Recovery from Waste Superalloy

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