A kind of preparation method and product application of nanometer alloy m-zn/nc catalyst
A nano-alloy and catalyst technology, which is applied in the field of preparation of nano-alloy M-Zn/NC catalysts, can solve problems affecting mass transfer of raw materials and products, easy coking and blockage, etc., to improve decarboxylation/decarbonylation performance, inhibit sintering and agglomeration, The effect of uniform alloy particle size
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Embodiment 1
[0040] Add 200mg of ZIF-8 carrier to 10ml of water, then add a chloroplatinic acid solution with a theoretical load of 1wt%, stir for 1 hour, add an ice bath and nitrogen protection, and prepare a sodium borohydride solution with a molar mass ten times that of the metal 2ml, it was slowly added dropwise to the metal solution, continued to stir under nitrogen for 2h after the dropwise addition, then filtered, washed, and vacuum dried at 40°C to obtain Pt / ZIF-8, then put Pt / ZIF-8 in the tube In the furnace, under a nitrogen atmosphere, the temperature was raised to 900 degrees for one hour, and the catalyst obtained after cooling to room temperature was named PtZn / NC. The loading of Pt was 6.1wt% and the loading of Zn was 5.8wt as detected by ICP. %. The specific surface area and pore volume data are shown in Table 1.
[0041] The Pt / ZIF-8 and PtZn / NC with a theoretical load of 1wt% were analyzed by transmission electron microscopy, and the results are as follows figure 1 and ...
Embodiment 2
[0044] Add 200mg of ZIF-8 carrier to 10ml of water, then add a chloroplatinic acid solution with a theoretical load of 1wt%, stir for 1 hour, add an ice bath and nitrogen protection, and prepare a sodium borohydride solution with a molar mass ten times that of the metal 2ml, it was slowly added dropwise to the metal solution, continued to stir under nitrogen for 2h after the dropwise addition, then filtered, washed, and vacuum dried at 40°C to obtain Pt / ZIF-8, then put Pt / ZIF-8 in the tube In the furnace, the temperature was raised to 700 degrees for one hour under a nitrogen atmosphere at 5 degrees per minute, and the catalyst obtained after cooling to room temperature was named PtZn / NC-700.
[0045] In a micro batch reactor (1.67cm 3 ), add 50mg of lauric acid and 5mg of catalyst PtZn / NC-700, wait until the sand bath is heated to the reaction temperature (360°C), tighten the nuts at both ends of the reactor and put it into the sand bath, react for 30min, take it out and put ...
Embodiment 3
[0047] Add 200mg of ZIF-8 carrier to 10ml of water, then add a chloroplatinic acid solution with a theoretical load of 1wt%, stir for 1 hour, add an ice bath and nitrogen protection, and prepare a sodium borohydride solution with a molar mass ten times that of the metal 2ml, it was slowly added dropwise to the metal solution, continued to stir under nitrogen for 2h after the dropwise addition, then filtered, washed, and vacuum dried at 40°C to obtain Pt / ZIF-8, then put Pt / ZIF-8 in the tube In the furnace, under a nitrogen atmosphere, the temperature was raised to 800 degrees for one hour at 5 degrees per minute, and the catalyst obtained after cooling to room temperature was named PtZn / NC-800.
[0048] In a micro batch reactor (1.67cm 3 ), add 50mg of lauric acid and 5mg of catalyst PtZn / NC-800, wait until the sand bath is heated to the reaction temperature (360°C), tighten the nuts at both ends of the reactor and put it in the sand bath, react for 30min, take it out and put i...
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