Production of hydrogen by steam reforming of ethanol over alumina supported nano-NiO/SiO2 catalyst

摘要: The production of hydrogen by catalytic steam reforming ethanol was carried out over alumina supported nano NiO catalyst in silica synthesized using sol–gel method. characterized SEM, TEM and BET surface area analyzer. performance the investigated three important operating parameters such as reaction temperature, feed to ratio space-time. activity tests were performed molar range 2:1 9:1 space-time from 2.78 9.25 kg h kmol−1 fed temperature 550 700 °C. A maximum yield 4.2 mol per mole reacted produced at 650 favorable condition established °C 8:1 a fed. Under these conditions, conversion, product composition H2 studied see contributions water–gas shift reaction, cracking, methane also reverse towards hydrogen. kinetic study wide different temperatures under negligible diffusional resistance. power-law model rate equation derived with acquired experimental data. parameter order estimated non-linear regression activation energy calculated be 27 kJ mol−1. good agreement obtained between predicted results.