Hydrogen production via methanol steam reforming over Au/CuO, Au/CeO2, and Au/CuO–CeO2 catalysts prepared by deposition–precipitation

Photocatalytic decompositions of methanol and ethanol on Au supported by pure or N-doped TiO2

“…The presence of Au on TiO 2 , however, markedly enhanced the photocatalytic performance of TiO 2 . After the complete conversion of C 2 H 5 OH, the photocatalyzed decomposition of CH 3 CHO came into prominence CH 3 CHO (a) ␦− = CH 4 + CO (a) ␦− (17) CO (a) ␦− + h + = CO (g) (18) The promoting effect of Au appears to be the same as that discussed for the photocatalytic decomposition of CH 3 OH. It should be borne in mind that nanosized Au is an active catalyst for the thermal decomposition of C 2 H 5 OH at elevated temperature [19][20][21][22][23].…”

“…As the generation of H 2 free of CO is one of the challenges in heterogeneous catalysis, the catalytic behavior of Au has also been tested from this aspect. It was found that supported Au particles effectively catalyze the production of H 2 in the thermal decompositions of HCOOH [6][7][8][9][10], CH 3 OH [11][12][13][14][15][16][17][18], C 2 H 5 OH [19][20][21][22][23] and CH 3 OCH 3 [24] at 423-573 K. Pure, CO-free H 2 was obtained, but only in the catalytic decomposition of HCOOH at higher temperatures [6][7][8]. A further development in this topic was the production of H 2 by photocatalytic decomposition of the above compounds over supported Au samples at room temperature [25][26][27][28][29][30][31][32].…”

The effect of gold on modern bimetallic Au–Cu/MWCNT catalysts for the oxy-steam reforming of methanol

“…Pongstabodee et al 66 studied the reduction properties of the monometallic Au and Cu and bimetallic Au-Cu catalysts supported on CeO 2 . The authors have found that Au facilitated copper oxide reduction and caused a shift of the reduction peaks to a lower temperature range.…”

Low-temperature steam reforming of methanol to produce hydrogen over various metal-doped molybdenum carbide catalysts

“…However, Cu-based catalysts have poor thermal stability when the reaction temperatures are over 300 °C due to the sintering of Cu, and they also are easily deactivated by H2S contaminates and chloride in the reactant stream [6,7]. Noble metal based SRM catalysts such as Pd/CeO2, Pd/ZnO, Pd/Ga2O3, Pd/SBA-15, Au/Ce1−xZrxO2, Au/CeO2, and Pd/Ga2O3 have also widely investigated and showed high activities at a temperature between 200-400 °C [8][9][10][11][12][13][14]. Recently, transition metal carbides such as tungsten carbide and molybdenum carbide have been attracted much attention because they show catalytic activities similar to those of noble metals in various reactions such as hydrogenation reactions, hydrocarbon isomerization, and methane and alcohol reforming [15][16][17][18].…”