Preparation method and application of catalyst for isopropanol prepared through propylene hydration
A technology of isopropanol and catalyst, applied in the field of catalysis, can solve the problems of high raw material price, complicated reaction process, and high equipment requirements, achieve high activity and selectivity, simple preparation process, and improve the effect of catalytic activity.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0028] The invention provides a kind of preparation method of the catalyst of hydration of propylene isopropanol, comprising the following steps:
[0029] Step 1: Etching and expanding the pores of the carrier with a substance containing HF, then filtering, washing with water, and drying at a drying temperature of 100-200° C. and a drying time of 3-15 hours to obtain a pore-expanding carrier;
[0030] Step 2, placing the pore-expanding carrier in a 10-85 wt% phosphoric acid solution, immersing it for 1-10 hours, filtering, and drying at a drying temperature of 70-200°C and a drying time of 3-15 hours to obtain a once-immersed phosphoric acid catalyst;
[0031] Step 3, impregnating the once-impregnated phosphoric acid catalyst in 10-85wt% phosphoric acid solution, impregnating, impregnating for 2-10 hours, filtering, drying, the drying temperature is 70-200°C, and the drying time is 3-15 hours to obtain phosphoric acid groups catalyst.
[0032] The present invention also provi...
Embodiment 1
[0047] (1) Weigh 10 g of silicon macrospheres (purchased from Nanjing Heyi Chemical Co., Ltd.) and dip them in 0.4% HF solution for 4 hours, filter, wash, and dry at 150° C. for 4 hours.
[0048] (2) Get 3.5g of catalyst after hole expansion, impregnate in 50wt%H 3 PO 4In the solution, immerse for 7 hours, filter, and dry. The drying temperature is 70° C., constant temperature for 7 hours, and then 150° C. for 3 hours to obtain a phosphoric acid impregnated catalyst, which contains 49wt% phosphoric acid and 51wt% silicon macrospheres.
[0049] (3) Take 3.5g of phosphoric acid catalyst soaked once and soak it in 50% H 3 PO 4 The solution was soaked for 7 hours, filtered and dried at a constant temperature of 70°C for 7 hours, then dried at 150°C for 3 hours to obtain the final catalyst, which contained 57wt% phosphoric acid and 43wt% silicon macrospheres.
[0050] (4) Get once soaked phosphoric acid catalyst 2.0g and place in fixed-bed reactor, feed propylene and water in fi...
Embodiment 2
[0053] It has the same steps as in Example 1, except that the concentration of the HF solution is 0.6%, and the result of the catalyzed reaction by soaking the phosphoric acid catalyst once is that the conversion rate of propylene is 4.15%, and the selectivity of isopropanol is 97.9%. The final catalytic reaction result of the catalyst is that the conversion rate of propylene is 4.93%, and the selectivity of isopropanol is 99.2%.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More