Production of high-purity hydrogen by sorption-enhanced steam reforming process of methanol-中国Betway体育网页登陆

摘要 Thesorption-enhancedsteamreformingprocessofmethanol(SESRP-MeOH)toproducehigh-purityH2wasthermodynamicallyandexperimentallystudied.ThermodynamiccalculationsshowedthatataCO2adsorptionratioof95%,productgascontains98.36%H2,32.8ppmCOundertemperatureof130°Candsteam-to-methanol(S/M)molarratioof2.However,withoutadsorption-enhanced,theproductgascontainsnearly74.99%H2with24.96%CO2and525ppmCO.Toverifythethermodynamiccalculationresults,experimentswereperformedinafixed-bedreactorloadedwithcommercialCuO/ZnO/Al2O3methanolreformingcatalystand22%K2CO3-promotedhydrotalciteasCO2adsorbent.Experimentalresultsshowedthat99.61%H2couldbeobtainedbySESRP-MeOHatreactiontemperatureof230°CandS/Mof2.UnderthesameCH3OHconversion,thereactiontemperaturedecreasedbyalmost50°CandH2concentrationincreasedofmorethan20%usingSESRP-MeOHcomparedwithsolelysteamreformingofmethanol.Thecharacterizationoftheadsorbentandcatalystshowedthattheadsorbentshowedgoodstabilitywhilethecatalystwasseriouslysinteredunderthehighregenerationtemperatureoftheadsorbent.

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Production of high-purity hydrogen by sorption-enhanced steam reforming process of methanol

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