Ruthenium catalyst, preparation method and application in synthesizing tetrahydrofurfuryl alcohol
A technology of ruthenium catalyst and tetrahydrofurfuryl alcohol, applied in the field of ruthenium catalyst, its preparation and its application in the synthesis of tetrahydrofurfuryl alcohol, can solve the problems of high hydrogenation pressure, low hydrogenation activity, side reactions, etc., and achieve high conversion efficiency, high selectivity
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[0015] Example 1
[0016] Catalyst preparation: 1.5g FeCl 3 .6H 2 O, 0.75g RuCl with 10% ruthenium metal concentration 3 The aqueous solution and 50ml of distilled water were added to a three-necked flask and fully dissolved under mechanical stirring for 30 minutes. Then add 0.5 g of non-ionic surfactant nonylphenol polyoxyethylene ether, stir for 5 minutes, add 2.1 g of titanium dioxide carrier, and stir for 1 hour. Weigh 0.8g KBH 4 Make 30ml water solution. Under stirring conditions, start adding KBH dropwise 4 The aqueous solution is controlled to be added dropwise within 10-15min and continue stirring for 0.5h. The above solution was centrifuged, and the precipitate was washed with distilled water until neutral. The above precipitate was activated in 100 ml of a 10% sodium sulfate aqueous solution at 120° C. and 1 MPa hydrogen pressure for 3 hours. After centrifugal separation and washing with ethanol 3 times, the target catalyst in this example was obtained.
[0017] One-s...
Example Embodiment
[0022] Example 2
[0023] The preparation of the catalyst is basically the same as in Example 1, but no surfactant is used. That is, compared with Example 1, the step of "adding 0.5 g of nonylphenol polyoxyethylene ether of non-ionic surfactant" is lacking. The process of one-step hydrogenation of furfural to synthesize tetrahydrofurfuryl alcohol is the same as in Example 1. The results of the reaction are shown in Table 1.
Example Embodiment
[0024] Example 3
[0025] The preparation of the catalyst is basically the same as in Example 1, but without using any metal promoters, while adding 10% RuCl 3 The amount of the aqueous solution was changed to 0.30g. In other words, the "1.5g FeCl 3 .6H 2 O, 0.75g RuCl with 10% ruthenium metal concentration 3 "Aqueous solution" is changed to "0.30g RuCl with 10% ruthenium metal concentration 3 Aqueous solution". The process of one-step hydrogenation of furfural to synthesize tetrahydrofurfuryl alcohol is the same as in Example 1. The reaction results are shown in Table 1.
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