PROPERTIES of spent petroleum hydrocarbon cracking catalyst and possibilities of its use to SORPTION WASTEWATER treatment
The paper represents results of the selection of lanthanum from spent catalyst of petroleum hydrocarbon cracking with mineral acids, gives science credence of methods of preparing compounds of lanthanum in the form of insoluble compounds (carbonates and hydroxides) from acid extracts. The experimental data characterize the composition and properties of the sediments and indicate the possibility of spent catalyst using as a raw material for rare earth elements production.