We are looking mostly for the following type of expired or waste spent catalysts: - Spent Nickel Catalyst (from 5% and above) - Spent Copper Catalyst (from *5% and above) - Spent Zinc Catalyst (from *5% and above) - Spent Molybdenum Catalyst (from 7% and above) - Spent Vanadium Catalyst (V2O5 from 5% and above) - Spent Tungsten Catalyst (from *5% and above) ferro phosphorus Show More