Ionic liquid stable monatomic catalyst as well as preparation method and application thereof
A technology for ionic liquids and catalysts, which is applied in the field of ionic liquid stable single-atom catalysts and its preparation, can solve the problems of low single-atom dispersion of noble metals, poor dispersion of active components, small single-atom dispersion, etc., to improve stability And the economy of the process, fast reaction speed, and the effect of improving catalytic performance and stability
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Embodiment 1
[0037] The ionic liquid stable single-atom catalyst described in embodiment 1, with Au 1 As the active component, cerium manganese solid solution as the carrier; Au 1 The loading capacity is 0.02%; the structural formula of the ionic liquid is:
[0038]
[0039] in:
[0040] R 1for -CH 2 CH 2 CH 2 CH 3 ;
[0041] R 2 for-NH 2 CH 3 ;
[0042] x - for OH - .
[0043] The preparation method of the ionic liquid stable single-atom catalyst described in embodiment 1 consists of the following steps:
[0044] First, disperse 1g of cerium-manganese solid solution in 50ml of deionized water, stir at room temperature for 15min, add 25ml of ammonium carbonate solution (concentration is 1mol / L) to prepare carrier suspension, and 0.1ml of chloroauric acid solution (concentration is 0.01mol / L) ) was dissolved in 25ml of deionized water, and added dropwise to the carrier suspension; heated for 1h, the resulting precipitate was washed with 70°C deionized water, and dried at 7...
Embodiment 2
[0048] The ionic liquid stable single-atom catalyst described in this embodiment 2, with Au 1 as the active component, CeO 2 as carrier; Au 1 The load is 0.02%, and the ionic liquid is the same as in Example 1.
[0049] The cerium-manganese solid solution in embodiment 1 is changed into CeO 2 , the rest of the steps for preparing an ionic liquid stable single-atom catalyst are the same as in Example 1; the obtained catalyst is used to prepare esters, the preparation conditions are the same as in Example 1, and the conversion rate of aldehydes and the selectivity of esters are detected, and the detection results are as follows Table 1 shows.
Embodiment 3
[0051] The ionic liquid stable single-atom catalyst described in this embodiment 3, with Au 1 as the active component, MnO 2 as carrier; Au 1 The load is 0.02%, and the ionic liquid is the same as in Example 1.
[0052] Change the cerium manganese solid solution in embodiment 1 into MnO 2 , the rest of the steps for preparing an ionic liquid stable single-atom catalyst are the same as in Example 1; the obtained catalyst is used to prepare esters, the preparation conditions are the same as in Example 1, and the conversion rate of aldehydes and the selectivity of esters are detected, and the detection results are as follows Table 1 shows.
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