TY - GEN
T1 - Experimental and modeling study of sorption enhanced catalytic methane reforming to pure hydrogen with in situ carbon dioxide capture
AU - Halabi, M.H.
AU - Croon, de, M.H.J.M.
AU - Schaaf, van der, J.
AU - Cobden, P.D.
AU - Schouten, J.C.
PY - 2009
Y1 - 2009
N2 - This paper presents an experimental and modeling investigation for a novel technique of low
temperature high purity hydrogen production using sorption assisted catalytic methane
reforming in a laboratory – scale fixed bed adsorptive reactor. The performance of methane
steam reforming is experimentally tested over a newly developed catalyst – sorbent
materials. Rh/CeaZr1-aO2 is employed as an efficient low temperature catalyst for steam
reforming and autothermal reforming of methane. K-promoted hydrotalcites, Zr-doped K-promoted hydrotalcites, and lithium zirconate are employed as newly developed candidate
sorbents for high purity hydrogen production at temperatures lower than 550oC.
Experimental and modeled results are compared to the conventional Ni – based catalytic
reforming processes. An enhanced methane conversion of 84%, which is the equilibrium
conversion is attained using Hydrotalcites/Ni – based sorption enhanced autothermal
reforming at operational conditions of 500oC, 4.47 bar, steam/carbon ratio of 6,
oxygen/carbon ratio of 0.45 and space velocity of 3071 hr-1. The corresponding hydrogen
yield and purity on dry basis are 3.6 and 95%, respectively. The lithium zirconate – based
process demonstrated a gain of enhanced methane conversion of 99.5% and dry basis
hydrogen purity of 99.5% achieved at the same conditions. The influence of major parameters of steam/carbon, oxygen/carbon, gas and catalyst temperatures, pressure, gas
space velocity, and feed contamination is also examined.
AB - This paper presents an experimental and modeling investigation for a novel technique of low
temperature high purity hydrogen production using sorption assisted catalytic methane
reforming in a laboratory – scale fixed bed adsorptive reactor. The performance of methane
steam reforming is experimentally tested over a newly developed catalyst – sorbent
materials. Rh/CeaZr1-aO2 is employed as an efficient low temperature catalyst for steam
reforming and autothermal reforming of methane. K-promoted hydrotalcites, Zr-doped K-promoted hydrotalcites, and lithium zirconate are employed as newly developed candidate
sorbents for high purity hydrogen production at temperatures lower than 550oC.
Experimental and modeled results are compared to the conventional Ni – based catalytic
reforming processes. An enhanced methane conversion of 84%, which is the equilibrium
conversion is attained using Hydrotalcites/Ni – based sorption enhanced autothermal
reforming at operational conditions of 500oC, 4.47 bar, steam/carbon ratio of 6,
oxygen/carbon ratio of 0.45 and space velocity of 3071 hr-1. The corresponding hydrogen
yield and purity on dry basis are 3.6 and 95%, respectively. The lithium zirconate – based
process demonstrated a gain of enhanced methane conversion of 99.5% and dry basis
hydrogen purity of 99.5% achieved at the same conditions. The influence of major parameters of steam/carbon, oxygen/carbon, gas and catalyst temperatures, pressure, gas
space velocity, and feed contamination is also examined.
M3 - Conference contribution
SP - 1199-1/5
BT - Proceedings of the 8th World congress of Chemical Engineering (WCCE8), August 23 to 27, 2009, Canada, Montreal
A2 - Tanguy, P.A.
ER -