Preparation and application of liquid-phase dehydrogenation catalyst
A dehydrogenation catalyst and catalyst technology are applied in the field of preparation of liquid-phase dehydrogenation catalysts, and can solve the problems of high operating cost, fast catalyst deactivation and high reaction temperature
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Embodiment 1
[0036] 2g of single-walled carbon nanotubes were placed in a tubular reactor and treated with nitrogen containing 10% HCl. The gas flow rate was 300mL / min, the treatment temperature was 450°C, and the treatment time was 12h. After cooling, it was used as a catalyst carrier.
[0037]Take 0.1244mL of chloroplatinic acid solution with a concentration of 16.14mL / L, add 0.378mL of water to prepare a solution, add 2g of the above-mentioned carrier to this solution, stir, leave at room temperature for 2h, then dry at 120°C for 4h, and finally put it The catalyst was calcined at 500°C for 4 h in a muffle furnace under N2 atmosphere. The catalyst composition is shown in Table 1.
[0038] The obtained catalyst was pressed into tablets, ground into a particle size of 12-20 mesh, and 1 gram was taken for evaluation in an isothermal fixed-bed reactor. Before the evaluation, it was reduced with hydrogen. The reduction conditions were as follows: normal pressure, temperature 450°C, hydrogen ...
Embodiment 2
[0040] 2g of single-walled carbon nanotubes were placed in a tubular reactor and treated with nitrogen containing 10% HCl. The gas flow rate was 300mL / min, the treatment temperature was 450°C, and the treatment time was 12h. After cooling, it was used as a catalyst carrier.
[0041] Take 0.622mL of chloroplatinic acid solution with a concentration of 16.14mL / L, add 0.378mL of water to prepare a solution, add 2g of the above-mentioned carrier to the solution, stir, and place at room temperature for 2h, then dry at 120°C for 4h, and finally put it The catalyst was calcined at 500° C. for 4 h in a muffle furnace with N2 atmosphere. The catalyst composition is shown in Table 1.
[0042] Take 1 g of the catalyst for evaluation in an isothermal fixed-bed reactor, and reduce it with hydrogen before the evaluation. The reduction conditions and evaluation conditions are the same as in Example 1. The preparation method and test results of the catalyst are shown in Table 2.
Embodiment 3
[0044] 2g of single-walled carbon nanotubes were placed in a tubular reactor and treated with nitrogen containing 10% HCl. The gas flow rate was 300mL / min, the treatment temperature was 450°C, and the treatment time was 12h. After cooling, it was used as a catalyst carrier.
[0045] Take 0.622mL of chloroplatinic acid solution with a concentration of 32.28mL / L, add 0.378mL of water to prepare a solution, add 2g of the above-mentioned carrier to this solution, stir, and place it at room temperature for 2h, then dry it at 120°C for 4h, and finally put it The catalyst was calcined at 500° C. for 4 h in a muffle furnace with N2 atmosphere. The catalyst composition is shown in Table 1.
[0046] Take 1g of the catalyst for evaluation in an isothermal fixed-bed reactor, and reduce it with hydrogen before the evaluation. The reduction conditions and evaluation conditions are the same as in Example 1. The preparation method and test results of the catalyst are shown in Table 2.
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