A micro-sphere catalyst complex with nano CaCO3 precursor for hydrogen production used in ReSER proc

This paper describes the preparation and evaluation of a micro-sphere catalytic complex for the hydrogen production in a Reactive Sorption Enhanced Reforming(ReSER)process.The catalytic complex made by a spray technique has a dual function containing Ni as a catalytic material and CaO as an adsorption material used in the ReSER process.The attrition characteristics of the catalytic complex are acceptable for the commercial used.The nano CaCO3 material used as a precursor of CaO showed a desirable durability with a CO2 sorption capacity of 0.6 mol CO2/kg after 10 repeating cycles under the carbonation temperature of 600℃,a CO2 partial pressure of 0.02 MPa,and a calcination temperature of 750℃ in N2 measured by a thermal gravimetrie analyzer.The testing of the catalytic complex for ReSER showed a hydrogen yield of over 95%(v/v)in the laboratory fixed fluidized bed reactor.The catalytic system has an attractive prospect in the ReSER process for hydrogen production,especially in the fluidized mode where reactor and regenerator combined in a cycling process.