A catalytic combustion catalyst for aromatic compounds and its preparation and application
A technology of aromatic compounds and catalytic combustion, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, combustion types, etc., can solve unsatisfactory catalytic performance, high light-off temperature and complete conversion temperature , low light-off temperature and complete conversion temperature, etc., to achieve the effects of carrier cost, environmental friendliness, low light-off temperature and complete conversion temperature, and excellent performance
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Embodiment 1
[0057] The native poplar (produced in Jiaozuo, Henan, peeled, cut into cylinders with a diameter (width) of 1 cm and a length of 5 cm) was immersed in an aqueous solution of chloropalladium acid with a concentration of 0.022 mol / L at room temperature for 30 days. After taking it out and drying it in a cool place, it was reduced with hydrogen at a flow rate of 30ml / min at 180°C for 2h. Finally, under a nitrogen atmosphere, the temperature was raised to 300°C at 5°C / min, kept at temperature, and subjected to surface treatment for 2 hours, then cooled down to obtain a Pd / surface carbonized poplar wood catalyst with a mass percentage of palladium of 0.23wt%, which was denoted as Pd / CP.
Embodiment 2
[0059] Compared with Example 1, the difference is only that the types of wood are different, specifically:
[0060] The original bal fir (produced in South America, peeled, cut into cylinders with a diameter of 1 cm and a length of 5 cm) was immersed in an aqueous solution of chloropalladium acid with a concentration of 0.022 mol / L at room temperature for 30 days. After taking it out and drying it in a cool place, it was reduced with hydrogen at a flow rate of 30ml / min at 180°C for 2h. Finally, in a nitrogen atmosphere, the temperature was raised to 300°C at 5°C / min, and the surface was treated for 2 hours by heat preservation, and then cooled to obtain a Pd / surface carbonized fir catalyst with a mass percentage of palladium of 0.25wt%, denoted as Pd / CC.
Embodiment 3
[0062] Compared with Example 1, the only difference is that the noble metal source is a Pt source, specifically:
[0063] The original poplar wood (same as Example 1) was soaked at room temperature for 30 days in a chloroplatinic acid aqueous solution with a concentration of 0.022 mol / L. After taking it out and drying it in a cool place, it was reduced with hydrogen at a flow rate of 30ml / min at 180°C for 2h. Finally, under a nitrogen atmosphere, the temperature was raised to 300°C at 5°C / min, held for 2 hours, and then cooled to obtain a Pt / surface carbonized poplar wood catalyst with a mass percentage of platinum of 0.23wt%, denoted as Pt / CP.
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