Preparation method and application of partially graphitized charcoal loaded nano-palladium catalyst
A technology of biochar and graphitization, applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc. Nano-palladium loss, environmental pollution and other problems, to achieve the effect of enhancing conductivity and electron transport capacity, simplifying the preparation process, and pollution-free source
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specific Embodiment approach 1
[0030] A method for preparing a partially graphitized biochar-supported nano-palladium catalyst, comprising the steps of:
[0031] Step 1. Using biochar as a carrier and a reducing agent, adding 1 g of biochar to the aqueous solution of palladium precursor according to the palladium content of 2 wt%, using an ultrasonic impregnation process, ultrasonic impregnation for 2 hours, drying in a 60°C oven for 12 hours, and ultrasonic impregnation. The power was 100W, the palladium precursor was impregnated on the biochar carrier, and dried in an oven at 60 °C for 12 h to obtain the dried impregnated biochar;
[0032] Step 2: Put the impregnated biochar after drying in step 1 into a tube furnace under nitrogen atmosphere, raise the temperature to 450°C at a heating rate of 10°C / min and keep it for 2h to carry out carbothermic reduction reaction, and finally wait for the sample to be heated in nitrogen After cooling to room temperature under the atmosphere, taking out and grinding, pa...
specific Embodiment approach 2
[0036] A method for preparing a partially graphitized biochar-supported nano-palladium catalyst, comprising the steps of:
[0037] Step 1. Using biochar as a carrier and a reducing agent, adding 1 g of biochar to the aqueous solution of palladium precursor according to the palladium content of 2 wt%, using an ultrasonic impregnation process, ultrasonic impregnation for 2 hours, drying in a 60°C oven for 12 hours, and ultrasonic impregnation. The power was 100W, the palladium precursor was impregnated on the biochar carrier, and dried in an oven at 60 °C for 12 h to obtain the dried impregnated biochar;
[0038]Step 2: Put the dried and impregnated biochar in step 1 into a tube furnace under nitrogen atmosphere, raise the temperature to 500°C at a heating rate of 10°C / min and keep it for 2h to carry out carbothermic reduction reaction, and finally wait for the sample to be heated in nitrogen After cooling to room temperature under the atmosphere, taking out and grinding, part o...
specific Embodiment approach 3
[0045] A method for preparing a partially graphitized biochar-supported nano-palladium catalyst, comprising the steps of:
[0046] Step 1. Using biochar as a carrier and a reducing agent, adding 1 g of biochar to the aqueous solution of palladium precursor according to the palladium content of 2 wt%, using an ultrasonic impregnation process, ultrasonic impregnation for 2 hours, drying in a 60°C oven for 12 hours, and ultrasonic impregnation. The power was 100W, the palladium precursor was impregnated on the biochar carrier, and dried in an oven at 60 °C for 12 h to obtain the dried impregnated biochar;
[0047] Step 2: Put the impregnated biochar after drying in step 1 into a tube furnace under nitrogen atmosphere, raise it to 550°C at a heating rate of 10°C / min and keep it for 2h to carry out carbothermic reduction reaction, and finally wait for the sample to be heated in nitrogen. After cooling to room temperature under the atmosphere, taking out and grinding, part of the gr...
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