The performance of fixed and fluidized bed reactors in the steam reforming biomass fast pyrolysis volatiles was compared, with especial attention paying to differences observed catalysts deactivation. experiments were carried out continuous regime a bench scale unit provided conical spouted for step. They on Ni-Ca/Al2O3 commercial catalyst under optimum conditions determined previous studies, i...

Vapour phase hydrogenation of nitrobenzene is carried out over metal (Pt, Pd, Ru, Ni) supported on hydroxyapatite (HAP) catalysts at atmospheric pressure and low temperatures ranging from 225–350 °C. The time-on-stream analysis reveals that 2 wt.%Pd/HAP is quite stable up to 6 h of continuous operation and is found to be an efficient catalyst. The other metal catalysts suffer deactivation, whic...

Manganese oxide-supported palygorskite (MnOx/PG) catalysts are considered highly efficient for low-temperature SCR of NOx. However, the MnOx/PG catalyst tends to be poisoned by SO2. The effect SO2 on activity SO2-pretreated poisoning under ammonia-free conditions was explored. It determined that considerably deactivated in absence ammonia and water-washed regeneration can completely recover cat...