Sorption enhanced steam reforming of methanol for high-purity hydrogen production over Cu-MgO/Al2O3 bifunctional catalysts

Fabricating Ga doped and MgO embedded nanomaterials for sorption-enhanced steam reforming of methanol

“…29 Moreover, the diffraction peak shi reduction when the Ga doping increases to 27 wt% is mainly due to the saturation of this substitution. 25 This phenomenon has been reported in other studies, and it has been proposed that ion substitution of Mg 2+ by other metal ions with a similar radius, such as Cu, Zn, and Ga, could induce the formation and exposure of basic sites of MgO, improving its CO 2 adsorption performance. 29,30 To further investigate the microstructures of the Ga-doped Cu-MgO CS, TEM and EDX mapping were conducted as shown in Fig.…”

“…20,23 To the best of our knowledge, the lowest reaction temperature currently reported is as high as 220 C for SE-SRM, and it is still difficult to achieve heat cascade utilization from HT-PEMFCs. 25 To sum up, it is necessary to exploit new-generation functionalized catalystadsorbent composites, further improving the catalytic-adsorptive performance and reducing the temperature of SE-SRM.…”

Sustainable hydrogen-rich syngas from steam reforming of bio-based acetic acid over ZnO and CeO2–ZnO supported Ni-based catalysts

“…The highest CO selectivity reaches 53.4% which is achieved at 800 C, and the corresponding H 2 selectivity is 90.5%. H 2 content is as high as 60.4% at 800 C while the CO content of 21.1% is only slightly lower than the 22.8% at 600 C. As the reforming T being raised from 500 to 900 C, the H 2 /CO ratio values show a trend of rst decreasing and then increasing, reaching a maximum value of 3.1 at 500 C. Since the complete SR of acetic acid (eqn (1)) is an endothermic reaction, increasing the T can promote the reaction to proceed in the positive direction, resulting in an increase in the yields of H 2 , CO, CO 2 , and CH 4 as the T increases from 500 to 700 C. The SR reaction process is accompanied by side reactions such as thermal decomposition (eqn (3)), water gas shi reaction (eqn (4)) and methanation reactions (eqn (5) and (6)). Further increasing T, exothermic reactions such as the water gas shi reaction and methanation reactions are inhibited, resulting in a reverse shi of the reaction equilibrium.…”

“…Hydrogen plays an important role in the synthesis of chemical substances such as pesticides, food avors, cellulose acetate, etc., 2,3 and it is also a clean fuel for fuel cells. 4,5 The total amount of H 2 required for industrial applications reaches 60 million tons per year. 6 Nowadays, hydrogen is produced in China mainly through the three technical routes: the rst is to produce hydrogen mainly through coal gasication or natural gas reforming, which is the main hydrogen production method at present; the second is to produce hydrogen through industrial by-product gas, represented by coke oven gas and chlor-alkali tail gas; the third is hydrogen production by electrolysis of water, accounting for only about 1%.…”

“…15 It need to mention that hydrogen as a high-quality clean fuel can be produced by steam reforming (SR) of acetic acid. 16 The main reactions involved in the SR reaction process are as follows: complete SR of acetic acid (eqn (1)), thermal decomposition (eqn (2) and (3)), water gas shi reaction (eqn (4)), methanation reactions (eqn (5) and (6)…”