The spent automobile catalysts (SAC) is the major secondary source of palladium and production SAC increasing rapidly over years. price keeps rising years, which demonstrates its preciousness urgent industrial demand. Recovering from benefits a lot economic environmental protection aspects. This review aims to provide some new considerations recovering automotive by summarizing discussing both ...

Spent residuum hydroprocessing (RHDP) catalysts are hazardous waste bearing high-content vanadium and large amounts of oily pollutants. In this paper, a process featuring Fenton-like reaction alkaline leaching was proposed to recover from spent RHDP catalysts. the first step, using peroxide conducted degrade pollutants make surface catalyst becomes hydrophilic. second vanadium-containing deposi...

0021-9517/$ see front matter 2011 Elsevier Inc. A doi:10.1016/j.jcat.2011.06.016 ⇑ Corresponding authors. Fax: +1 513 556 3473. E-mail addresses: [email protected] (P. Bool [email protected] (P.G. Smirniotis). High temperature water gas shift reaction (WGS) at low steam to CO ratios has been investigated over Fe2.4Ce0.3M0.3O4 (M = Cr, Co, Zr, Hf, and Mo) type of spinels in the temperature region of ...

Spent automobile catalysts are the most important secondary resource for platinum group metals (PGMs), and their recycling is essential not only to ensure a steady supply of PGMs but also preserve natural environment. However, several factors limit efficiency PGM recovery in current processes. Specifically, represent small proportion entire catalyst difficult dissolve aqueous solutions subseque...

Rhodium (Rh) catalyst has played an indispensable role in many important industrial and technological applications due to its unique valuable properties. Currently, Rh is considered as a strategic or critical metal the scarce high-quality purity can only be supplemented by refining coarse ores with low content (2–10 ppm) far from meeting fast-growing market demand. Nowadays, exploring new prosp...