Loaded nano-Au catalyst and preparation method thereof
A catalyst and nano-gold technology, applied in the field of catalyst and its preparation, can solve problems such as the evaluation of the water vapor resistance of the catalyst
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Embodiment 1
[0031] Such as figure 1 As shown, weigh 0.00415g of ferric nitrate and dissolve it in 0.5mL of deionized water to make an impregnation solution, and weigh 0.5g of γ-Al 2 o 3 Place the carrier in a beaker, pour the impregnating solution into the carrier, impregnate at 20°C for 1h, dry at 120°C for 4h, and roast at 550°C for 2h to make modified γ-Al 2 o 3 Carrier: prepare 0.5mL of chloroauric acid solution with a concentration of 1.035g / ml, and impregnate the modified carrier at 20°C for 1 hour to obtain a catalyst precursor. A sodium borohydride solution with a concentration of 0.0025 g / ml was prepared, the catalyst precursor was reduced at 20°C for 1 hour, washed with deionized water three times, filtered, and dried at 120°C for 2 hours to obtain a supported nano-gold catalyst. Wherein Au content is 0.6% (wt), Fe 2 o 3 The content is 0.5% (wt).
[0032] The catalytic performance of the prepared catalyst was evaluated according to the aforementioned test conditions, and t...
Embodiment 2
[0034] Such as figure 1 As shown, weigh 0.00515g of manganese nitrate and dissolve it in 0.5mL of deionized water to make an impregnation solution, and weigh 0.5g of γ-Al 2 o 3 Place the carrier in a beaker, pour the impregnating solution into the carrier, impregnate at 20°C for 1h, dry at 120°C for 4h, and roast at 550°C for 2h to make modified γ-Al 2 o 3 Carrier: prepare 0.5mL of chloroauric acid solution with a concentration of 1.035g / ml, and impregnate the modified carrier at 20°C for 1 hour to obtain a catalyst precursor. A sodium borohydride solution with a concentration of 0.0025 g / ml was prepared, the catalyst precursor was reduced at 20°C for 1 hour, washed with deionized water three times, filtered, and dried at 120°C for 2 hours to obtain a supported nano-gold catalyst. Wherein Au content is 0.6% (wt), MnO 2 The content is 0.5% (wt).
[0035] The catalytic performance of the prepared catalyst was evaluated according to the aforementioned test conditions, and th...
Embodiment 3
[0037] Such as figure 1 As shown, weigh 0.0059g of copper nitrate and dissolve it in 0.5mL of deionized water to make an impregnation solution, and weigh 0.5g of γ-Al2 o 3 Place the carrier in a beaker, pour the impregnating solution into the carrier, impregnate at 20°C for 1h, dry at 120°C for 4h, and roast at 550°C for 2h to make modified γ-Al 2 o 3 Carrier: prepare 0.5mL of chloroauric acid solution with a concentration of 1.035g / ml, and impregnate the modified carrier at 20°C for 1 hour to obtain a catalyst precursor. A sodium borohydride solution with a concentration of 0.0025 g / ml was prepared, the catalyst precursor was reduced at 20°C for 1 hour, washed with deionized water three times, filtered, and dried at 120°C for 2 hours to obtain a supported nano-gold catalyst. Wherein the Au content is 0.6% (wt), and the CuO content is 0.5% (wt).
[0038] The catalytic performance of the prepared catalyst was evaluated according to the aforementioned test conditions, and the...
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