Recovery of platinum from spent catalysts can meet the comprehensive recycling secondary resources. and enrichment Al2O3 carrier catalyst using matte smelting for pyrite-acid leaching process were studied. In melting process, effects pyrite, CaO, quartz sand, Na2B4O7 dosage on recovery rate Pt investigated. effect H2SO4 concentration, temperature, time, liquid/solid (L/S) ratio enriching effici...

• Recovery of platinum and palladium from spent auto-catalysts by hydrometallurgy. Best conditions for leaching: 11.6 mol L ?1 HCl, 1%vol H 2 O , 60 °C, L/S = kg 3 h. solvent extraction systems Pd Pt: Cyanex® 471X Cyphos® IL 101. Efficient stripping agents Pt 101 need further research. To ensure the supply raw materials products extreme importance in strategic sectors, recovery critical metals ...

This study reports on the microwave-assisted leaching behavior of platinum group metals (PGMs) and light rare earth elements (LREEs) from two representative end-of-life automotive ceramic catalyst materials in 6 M HCl at 150 °C with without addition 10 v/v% H2O2 solution. It was shown that situ generated headspace gas pressure-tight reactor elemental speciation spent catalysts influence leachab...

Abstract Ethanol steam reforming was studied over Ni supported catalysts. The effects of support (Al 2 O 3 , Al –ZnO, and –CeO ), metal loading, catalyst activation method, steam-to-ethanol molar feed ratio were investigated. properties catalysts by N physisorption, TPD-CO X-ray diffraction, temperature programmed reduction. After activity tests, the analyzed TOC analysis. catalytic measurement...

Abstract The influence of CuO/ZrO 2 /ZnO (Cu/Zr/Zn) catalyst modification with Mn, Ni, Ga on the physicochemical properties and activity toward hydrogen production in steam reforming ethanol (SRE) reaction has been evaluated. increase yield lowest selectivity to acetaldehyde were observed upon Cu/Zr/Zn Mn Ga. characterisation spent catalysts revealed changes phase compositions reducibility. In ...

Spent cobalt-based macroporous adsorbents are considered to be used for the hydrotreating process. Herein, spent materials from low-temperature desulfurization process were as organic sulfur catalysts. Physicochemical properties of waste characterized and performance COS conversion was evaluated at different conditions. The Co-containing exhibit considerable hydrogenation low temperature, resid...