Method for activating catalyst for chlorine production and method for producing chlorine
A technology of activation method and manufacturing method, which is applied in the direction of catalyst regeneration/reactivation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of catalyst activity reduction, etc., and achieve the effect of reducing catalyst cost and good catalyst activity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0049] 5 g of the degraded catalyst obtained in Reference Example 1 and 45 g of a 36% hydrochloric acid aqueous solution (manufactured by Wako Pure Chemical Industries, Ltd.) were put into a container, mixed, and allowed to stand at 25° C. for 24 hours to bring them into contact. Subsequently, the supernatant was removed by decantation, and the resulting solid was washed three times with 150 g of ion-exchanged water, and then dried at 60° C. to reach a constant weight (more than 2 hours), to obtain the activated lysate activated by the activation method of the present invention. Catalyst (activated catalyst). In addition, when the pH of the 36% hydrochloric acid aqueous solution used here was measured, it was -2.0.
[0050] Next, the catalyst activity when the reaction of oxidizing hydrogen chloride with oxygen was performed using the obtained activated catalyst was evaluated by the following method. The results are shown in Table 1.
[0051]
[0052] 1 g of the obtained c...
Embodiment 2
[0056] Instead of the 36% aqueous hydrochloric acid solution used in Example 1, 45 g of a 20% aqueous hydrochloric acid solution (prepared by diluting 25 g of a 36% aqueous hydrochloric acid solution (manufactured by Wako Pure Chemical Industries, Ltd.) with 20 g of ion-exchanged water) was used. Except that, in the same manner as in Example 1, a catalyst (activated catalyst) activated by the activation method of the present invention was obtained. In addition, the pH of the 20% hydrochloric acid aqueous solution used here was measured and found to be -1.7.
[0057] Next, the catalyst activity when the reaction of oxidizing hydrogen chloride with oxygen was performed using the obtained activated catalyst was evaluated by the same method as in Example 1. The results are shown in Table 1.
Embodiment 3
[0059] Instead of the 36% aqueous hydrochloric acid solution used in Example 1, 45 g of a 2.5% aqueous hydrochloric acid solution (prepared by diluting 3.125 g of a 36% aqueous hydrochloric acid solution (manufactured by Wako Pure Chemical Industries, Ltd.) with 41.875 g of ion-exchanged water) was used, except Otherwise, in the same manner as in Example 1, a catalyst (activated catalyst) activated by the activation method of the present invention was obtained. In addition, the pH of the 2.5% hydrochloric acid aqueous solution used here was measured and found to be 0.2.
[0060] The catalyst activity when the reaction of oxidizing hydrogen chloride with oxygen was performed using the obtained activated catalyst was evaluated by the same method as in Example 1. The results are shown in Table 1.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More