Kinetics and dynamics of methanol steam reforming on CuO/ZnO/alumina catalyst

TY - JOUR

T1 - Kinetics and dynamics of methanol steam reforming on CuO/ZnO/alumina catalyst

AU - Thattarathody, Rajesh

AU - Sheintuch, Moshe

N1 - Publisher Copyright: © 2017 Elsevier B.V.

PY - 2017

Y1 - 2017

N2 - The kinetic and dynamic behavior of the methanol steam reforming (MSR) over CuO/ZnO/Al2O3 catalyst were followed at various steam to carbon (S/C) ratio using temperature ramping and steady state input conditions. The data is required for designing a methanol reformer-internal combustion engine (ICE) system, utilizing the reforming products as fuel for ICE while using the hot exhaust gases to heat the reformer. The catalyst exhibited high activity above 200 °C for MSR and above 250 °C for methanol decomposition reactions, making methanol a good hydrogen vector. The production of undesired byproducts, methyl formate and dimethyl ether, declined with increasing S/C and vanish at S/C = 1. Rate oscillations were observed during MSR on CuO/ZnO/Al2O3 under isothermal conditions and S/C ∼1 for the first time. Oscillations with a period of 10 min in order of magnitude, were observed in all MS signals with some phase shift between them. A simple kinetic model was developed for methanol decomposition (MD) using S/C = 0 data and the rate and activation energies were determined. Calculations using S/C = 1 data assuming MD followed by WGS, show that at high temperatures the WGS is close to equilibrium.

AB - The kinetic and dynamic behavior of the methanol steam reforming (MSR) over CuO/ZnO/Al2O3 catalyst were followed at various steam to carbon (S/C) ratio using temperature ramping and steady state input conditions. The data is required for designing a methanol reformer-internal combustion engine (ICE) system, utilizing the reforming products as fuel for ICE while using the hot exhaust gases to heat the reformer. The catalyst exhibited high activity above 200 °C for MSR and above 250 °C for methanol decomposition reactions, making methanol a good hydrogen vector. The production of undesired byproducts, methyl formate and dimethyl ether, declined with increasing S/C and vanish at S/C = 1. Rate oscillations were observed during MSR on CuO/ZnO/Al2O3 under isothermal conditions and S/C ∼1 for the first time. Oscillations with a period of 10 min in order of magnitude, were observed in all MS signals with some phase shift between them. A simple kinetic model was developed for methanol decomposition (MD) using S/C = 0 data and the rate and activation energies were determined. Calculations using S/C = 1 data assuming MD followed by WGS, show that at high temperatures the WGS is close to equilibrium.

KW - Methanol decomposition

KW - Methanol steam reforming

KW - Rate oscillations

KW - Water gas shift reaction

UR - http://www.scopus.com/inward/record.url?scp=85018373802&partnerID=8YFLogxK

U2 - 10.1016/j.apcata.2017.04.012

DO - 10.1016/j.apcata.2017.04.012

M3 - 文章

AN - SCOPUS:85018373802

SN - 0926-860X

VL - 540

SP - 47

EP - 56

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

ER -