Catalyst Recycling Articles

  • Synthesis of β-Cyano ketones promoted by a Heterogeneous Fluoride catalyst

    Keywords: β-cyano ketones;heterogeneous catalysis;solvent-free conditions;sustainable chemistry;A simple protocol for the conjugate addition of cyanide group to α,β-unsaturated ketones has been developed. By exploiting solvent-free conditions, the use of Amberlist-F (Amb-F) as heterogeneous fluoride catalyst, and trimethylsilyl cyanide (TMSCN) as reactant, β-cyano ...


    By SusChem

  • Platinum group metal recovery from spent catalysts - Case Study

    The Challenge Catalyst wastes, including automotive catalytic converters and industrial catalysts, contain Precious Metals and specifically Platinum Group Metals (PGMs), which are valuable as a result of their low natural abundance, unique properties as well as the complex and costly processes that are required for their extraction and refining from primary sources. Furuya Metal Co. Ltd., ...

  • Recovery of Ruthenium and Other PGMs from Spent Petrochemical Catalysts - Case Study

    The recovery of platinum group metals from spent petrochemical catalysts has economic benefits by the protection of the supply chain of these valuable and rare metals, thereby helping to create a sustainable value chain in the petrochemical industry for catalysts. Introduction The platinum group metals (PGMs) are used extensively in catalysts for the petrochemical industry owing to ...

  • Automotive spent catalysts treatment and platinum recovery

    The recovery of platinum from spent catalysts was examined. Platinum leaching was studied considering particle size, temperature, solid–liquid and HCl/HNO3 ratio effects. Many elements together with Pt were taken from a mixed spent catalyst sample. The main components of the leach liquor were Pt (1.84 g/kg cat) and Fe (0.94 g/kg cat). Platinum was separated from the leach aqueous solution by ...


    By Inderscience Publishers

  • Recovery of nickel from spent catalyst by single- and multi-stage leaching process

    Nickel-supported catalyst is used in petroleum, fertiliser and iron industries. This research studied the possibility of recovering nickel by leaching the ground catalyst with sulphuric acid. The leaching was done in single stage and multi-stages. The results obtained in single-stage leaching showed that the percentage recovery of nickel increased with increasing acid concentration used up to 25% ...


    By Inderscience Publishers

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