A kind of metal oxide supports gold to efficiently catalyze glycerol to prepare DHA catalyst and preparation method thereof
A double metal oxide, catalytic glycerol technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, catalyst activation/preparation, carbon-based compound preparation, etc., can solve the problem that DHA activity needs to be further improved, and achieve performance Good results
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[0014] Step A: Weigh Zn(NO 3 ) 2 ·6H 2 O, Ga(NO 3 ) 3 9H 2 O(Zn(NO 3 ) 2 ·6H 2 O, Ga(NO 3 ) 3 9H 2 The molar ratio of O is 3) dissolve in deionized water, stir and sonicate until completely dissolved, the solution is clear and transparent (solution A); weigh Na 2 CO 3 Add 200mL of deionized water (solution C) into a 1000mL four-neck flask, weigh NaOH and dissolve it in 200mL of deionized water to prepare an alkaline solution (solution B). Under magnetic stirring at room temperature, solution A and solution B were slowly dropped into a four-necked flask, and the pH value was controlled to be constant. After the metal salt solution A is completely dropped, crystallize at a constant temperature in an oil bath. The solid sample was obtained by suction filtration under reduced pressure, washed with deionized water, dried in an oven, and ground to obtain ZnGa-CO 3 -LDHs powder, dry storage.
[0015] Step B: the above-prepared ZnGa-CO 3 - LDHs were placed in a round b...
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