Catalyst for preparing ethanol through acetic acid hydrogenation and preparation method thereof
A catalyst and hydrogen preparation technology, applied in the chemical field, can solve the problems of high price, difficult to improve conversion rate and selectivity at the same time, limited prospects, etc., and achieve the effects of low production cost, excellent activity and selectivity, and good repeatability
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Embodiment 1
[0029] Weigh 1.06g Cu(NO 3 ) 2 ·3H 2 O and 0.73g In(NO 3 ) 3 ·5H 2 Add O into a beaker, measure 130ml of pure water, put it into a water bath, stir at 60°C until completely dissolved, and obtain a mixed solution containing Cu and In. Take 5.0g gas phase SiO 2 Add it into the mixed solution, keep the temperature at 60°C, and keep stirring for 30 minutes to obtain a mixed solution. Dissolve 5.3g of anhydrous sodium carbonate in 500ml of water, stir to dissolve, transfer to a titration funnel, add dropwise to the above mixed solution, keep constant temperature and keep stirring during the process. Titrate until the pH value is 7.5, and the titration ends. After that, the stirring was continued for 2 h, and a solid was obtained after suction filtration, which was transferred to an oven at 120° C. for drying for 10 h to obtain solid A. Solid A was calcined at 450°C for 4 hours to obtain solid B. The solid B was pressed into tablets, and 30 to 60 mesh particles were screene...
Embodiment 2
[0033] Weigh 5.32g Cu(NO 3 ) 2 ·3H 2 O and 1.44g In(NO 3 ) 3 ·5H 2 Add O into a beaker, measure 130ml of pure water, put it into a water bath, stir at 60°C until completely dissolved, and obtain a mixed solution containing Cu and In. Take 5.0g gas phase SiO 2 Add it into the mixed solution, keep the temperature at 60°C, and keep stirring for 30 minutes to obtain a mixed solution. Dissolve 5.3g of anhydrous sodium carbonate in 500ml of water, stir to dissolve, transfer to a titration funnel, add dropwise to the above mixed solution, keep constant temperature and keep stirring during the process. Titrate until the pH value is 7.5, and the titration ends. After that, the stirring was continued for 2 h, and a solid was obtained after suction filtration, which was transferred to an oven at 120° C. for drying for 10 h to obtain solid A. Solid A was calcined at 450°C for 4 hours to obtain solid B. The solid B was pressed into tablets, and 30 to 60 mesh particles were screene...
Embodiment 3
[0036] Weigh 2.07g Cu(NO 3 ) 2 ·3H 2 O and 1.44g In(NO 3 ) 3 ·5H 2Add O into a beaker, measure 130ml of pure water, put it into a water bath, stir at 60°C until completely dissolved, and obtain a mixed solution containing Cu and In. Take 5.0g gas phase SiO 2 Add it into the mixed solution, keep the temperature at 60°C, and keep stirring for 30 minutes to obtain a mixed solution. Dissolve 5.3g of anhydrous sodium carbonate in 500ml of water, stir to dissolve, transfer to a titration funnel, add dropwise to the above mixed solution, keep constant temperature and keep stirring during the process. Titrate until the pH value is 7.5, and the titration ends. After that, the stirring was continued for 2 h, and a solid was obtained after suction filtration, which was transferred to an oven at 120° C. for drying for 10 h to obtain solid A. Solid A was calcined at 450°C for 4 hours to obtain solid B. The solid B was pressed into tablets, and 30 to 60 mesh particles were screened...
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