Catalyst for directly preparing ethanol from synthesis gas and preparation method and application thereof
A composite catalyst, catalyst technology, applied in catalyst activation/preparation, preparation of organic compounds, chemical instruments and methods, etc., can solve the problems of low ethanol selectivity, low CO conversion rate, etc., to improve ethanol selectivity, The effect of high CO conversion
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0030] Preparation of CuFe@m-SiO by a coprecipitation method combined with a simple solvothermal method 2 For the core-shell composite Fischer-Tropsch synthesis catalyst, the preparation process of the CuFe precipitate is the same as that of Comparative Example 1, except that the precipitate is not dried and roasted after suction filtration and washing. Subsequently, the obtained precipitate is uniformly dispersed in an aqueous solution containing an excess of coupling agent (polyvinylpyrrolidone (PVP)) under the assistance of ultrasound, stirred overnight, centrifuged or washed by suction filtration, and then, the obtained precipitate is dispersed in an aqueous solution containing In the mixed solution of 0.4g cetyltrimethylammonium bromide (CTAB), 9.6mL ammonia water, 138mL ethanol and 110mL water, add 1.33mL tetraethyl orthosilicate (TEOS) drop by drop under stirring, at room temperature After reacting for 48 hours under the same conditions, it was filtered and washed, and ...
Embodiment 2
[0033] Prepare the Rh / CuFe catalyst by the equal volume impregnation method, at first, measure the water absorption of the CuFe Fischer-Tropsch synthesis catalyst in Comparative Example 1, then, according to the loaded amount of Rh, be 0.2wt.%, the required amount of rhodium nitrate aqueous solution impregnated on CuFe Fischer-Tropsch synthesis catalyst. The impregnated catalyst was dried in the air and then dried at 110°C for 4 hours to obtain the desired catalyst.
[0034] The activation conditions and reaction conditions of the catalyst are the same as in Comparative Example 1, and the performance evaluation results of the catalyst are shown in Table 1.
Embodiment 3
[0036] Preparation of Rh / CuFe@m-SiO by Isovolumetric Impregnation 2 Catalyst, the preparation process is the same as in Example 2, the CuFe Fischer-Tropsch synthesis catalyst used in Example 2 is replaced by the CuFe@m-SiO obtained in Example 1 2 Core-shell composite catalyst for Fischer-Tropsch synthesis.
[0037] The activation conditions and reaction conditions of the catalyst are the same as in Comparative Example 1, and the performance evaluation results of the catalyst are shown in Table 1.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More