Cu-based catalyst for hydrogen production through methanol reforming, and preparation method and application thereof
A reforming hydrogen production and catalyst technology, which is applied in the field of hydrogen energy, can solve the problem of poor catalytic effect of CuO, and achieve good catalytic activity, high activity, and simple preparation method
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Embodiment 1
[0048] This embodiment provides a preparation method and application of a Cu-based catalyst. The preparation method and application include the following steps:
[0049] (1) 30g of cerium nitrate, 10g of lanthanum nitrate and 4g of copper nitrate were dissolved in 400mL of water, 90g of urea was added thereto, heat treated at 90°C for 24h, filtered, washed and dried to obtain a precipitate;
[0050] (2) calcining the precipitate obtained in step (1) at 450° C. for 4 hours to obtain a precursor;
[0051] (3) Pulverize the precursor obtained in step (2), pass it through a 50-mesh sieve, weigh 500mg of the precursor and put it into a quartz tube fixed-bed reactor, feed it at 0.06mL / s and vaporize at 175°C Methanol and water, the molar ratio of methanol and water is 1:3, and then the reaction temperature is raised to 350° C. at a rate of 5° C. / min to carry out the catalyst performance test.
Embodiment 2
[0053] This embodiment provides a preparation method and application of a Cu-based catalyst. The preparation method and application include the following steps:
[0054] (1) 10 g of cerium nitrate, 20 g of lanthanum nitrate and 0.15 g of copper nitrate were dissolved in 400 mL of water, 90 g of urea was added thereto, heat treated at 85° C. for 36 h, filtered, washed, and dried to obtain a precipitate;
[0055] (2) calcining the precipitate obtained in step (1) at 400° C. for 5 hours to obtain a precursor;
[0056] (3) Pulverize the precursor obtained in step (2), pass it through a 50-mesh sieve, weigh 500 mg of the precursor and put it into a quartz tube fixed-bed reactor, feed it at 0.06 mL / s and vaporize at 150 °C Methanol and water, the molar ratio of methanol and water is 1:4, and then the reaction temperature is raised to 300° C. at a rate of 5° C. / min to carry out the catalyst performance test.
Embodiment 3
[0058] This embodiment provides a preparation method and application of a Cu-based catalyst. The preparation method and application include the following steps:
[0059] (1) 20g of cerium nitrate, 15g of lanthanum nitrate and 1.75g of copper nitrate were dissolved in 400mL of water, 90g of urea was added thereto, heat treated at 95°C for 9h, filtered, washed and dried to obtain a precipitate;
[0060] (2) calcining the precipitate obtained in step (1) at 500° C. for 3 hours to obtain a precursor;
[0061] (3) Pulverize the precursor obtained in step (2), pass it through a 50-mesh sieve, weigh 500 mg of the precursor and put it into a quartz tube fixed-bed reactor, feed it at 0.06 mL / s and vaporize at 200 °C Methanol and water, the molar ratio of methanol and water is 1:1, and then the reaction temperature is raised to 400°C at a rate of 5°C / min to carry out the catalyst performance test.
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