Preparation method of three-dimensional porous carbon loaded Rh-based catalyst, product and application of three-dimensional porous carbon loaded Rh-based catalyst
A three-dimensional porous, catalyst technology, applied in the direction of catalyst activation/preparation, preparation of hydroxyl compounds, preparation of organic compounds, etc., can solve the problems that microporous carriers are easy to be blocked and affect catalytic activity, etc., and achieve good mass and heat transfer effects , improve activity, optimize the effect of interaction
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Embodiment 1
[0024] A preparation method of a three-dimensional porous carbon carrier, the steps are as follows:
[0025] (1) Preparation of carbon quantum dots: Mix 30mL acetone and 20mL 5M NaOH solution in a beaker, and control the ice bath at about 4°C, keep stirring for 120h to obtain a suspension, and then add 1M HCl to adjust the pH of the system to 7 , and then separated by high-speed centrifugation, washed several times and dried at 120°C to obtain carbon quantum dots.
[0026] (2) Three-dimensional porous carbon-based carrier material: the obtained carbon quantum dots are placed in a tube furnace, heated to 1000°C at a heating rate of 10°C / min, and heat-treated for 2h in an Ar atmosphere to make the carbon quantum dots further Carbonization, crosslinking and derivation into three-dimensional porous carbon materials (PCMs).
Embodiment 2
[0028] A preparation method for a three-dimensional porous carbon supported Rh-based catalyst for Fischer-Tropsch synthesis, the steps are as follows:
[0029] (1) Preparation of carbon quantum dots: Mix 30mL acetone and 20mL 5M NaOH solution in a beaker, and control the ice bath at about 4°C, and keep stirring for 120h to obtain a suspension, then add 1M HCl to adjust the pH of the system to 7 , and then through high-speed centrifugation and repeated washing to obtain carbon quantum dots. The washed 100 mg carbon quantum dots were redispersed in 100 mL deionized water to obtain a stable colloidal solution of carbon quantum dots.
[0030] (2) Rh ion modification on the surface of carbon quantum dots: add 1mg rhodium trichloride (0.5wt%Rh) into 1mL deionized water to disperse, then add to the above-mentioned carbon quantum dot colloidal solution, adjust with dilute hydrochloric acid (concentration is 1M) pH value to 7, stirred at 90°C for 1 h, cooled to room temperature, separ...
Embodiment 3
[0033] A preparation method for a three-dimensional nitrogen-doped porous carbon-supported Rh-based catalyst for Fischer-Tropsch synthesis, the steps of which are as follows:
[0034](1) Preparation of nitrogen-containing carbon quantum dots: Mix 1 g of N,N-diformyl-α-aminoacetophenone and 20 mL of 5M NaOH solution in a beaker, and control the ice bath at about 4 ° C, and keep stirring for 120 hours , to obtain a suspension. Then add 1M HCl to adjust the pH of the system to 7, and then separate by high-speed centrifugation and wash for many times to obtain carbon quantum dots containing nitrogen atoms. The washed 100 mg carbon quantum dots containing nitrogen atoms were redispersed in 100 mL deionized water to obtain a stable colloidal solution of carbon quantum dots containing nitrogen atoms.
[0035] (2) Rh ion modification on the surface of nitrogen-containing carbon quantum dots: add 2 mg of rhodium trichloride (1 wt% Rh) to 1 mL of deionized water to disperse, then add i...
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