Catalyst for preparing dichlorosilane, preparation method of catalyst and preparation method of dichlorosilane
A technology for silicon dichlorosilane and a catalyst is applied to the catalyst for preparing silicon hydrogen chloride and the field of preparation thereof, which can solve the problems of easy falling off, low catalytic efficiency of the catalyst, poor adsorption effect, etc., so as to improve the catalytic activity and reduce the particle size. , the effect of increasing the dispersion
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example Construction
[0022] The invention provides a method for preparing a catalyst for preparing dichlorosilane, which comprises the following steps: Step 1: Soak activated carbon in an aqueous solution of citric acid, take it out and dry it after soaking.
[0023] In this step, before soaking the activated carbon in the aqueous solution of citric acid (2-hydroxy-1,2,3-tricarboxypropane), the activated carbon is pretreated, and the pretreatment includes weighing a certain amount of activated carbon, First use deionized water to wash the activated carbon repeatedly several times, then use ultrasonic waves to ultrasonically clean the activated carbon for 5-10 minutes, and then use deionized water to wash the activated carbon several times until the water after cleaning is clarified to obtain clean activated carbon. Then dry it. The drying can be done naturally or in an oven. For example, put the cleaned activated carbon in a blast oven and bake it at 80-120°C for 5-8 hours. The activated carbon obt...
Embodiment 1
[0043] 1. Pretreatment of activated carbon: Take 30g of activated carbon, wash it with deionized water several times until the water after washing is clear, dry it naturally, and bake it in a blast oven at 110°C for 8 hours to obtain activated carbon CA1-0;
[0044] 2. Soak the activated carbon in 200ml of 1.0mol / L citric acid aqueous solution for 10 hours, take it out after soaking, and bake it in a blast oven at 110°C for 8 hours to obtain activated carbon CA1-1;
[0045] 3. Impregnate cobalt salt: A. Prepare 0.1mol / L CoCl 2 ·6H 2 O solution 500ml, B, get 20g activated carbon CA1-1, get 240ml CoCl prepared above 2 ·6H 2 O solution in a 500ml beaker, put activated carbon CA1-1 into CoCl 2 ·In the 6H2O solution, let it stand for immersion for 8 hours. C. After the immersion, remove the excess immersion liquid, dry it naturally, and dry it in a blast oven at 120°C for 10 hours to obtain activated carbon CA1-2;
[0046] 4. Roasting: Calcining activated carbon CA1-2 at a temp...
Embodiment 2
[0050] 1. Pretreatment of activated carbon: Take 30g of activated carbon, wash it with deionized water several times until the water after washing is clear, dry it naturally, and bake it in a blast oven at 100°C for 8 hours to obtain activated carbon CA2-0;
[0051] 2. Soak the activated carbon in 300ml of 1.2mol / L citric acid aqueous solution for 8 hours, take it out after soaking, and bake it in a blast oven at 100°C for 8 hours to obtain activated carbon CA2-1;
[0052] 3. Impregnate cobalt salt: A. Prepare 0.9mol / L CoCl 2 ·6H 2 O solution 500ml, B, get 20g activated carbon CA2-1, get 300ml CoCl prepared above 2·6H 2 O solution in a 500ml beaker, put activated carbon CA2-1 into CoCl 2 ·6H 2 In the O solution, stand and soak for 20 hours. C. After the soaking is completed, remove the excess soaking liquid, dry it naturally, and dry it in a blast oven at 100°C for 8 hours to obtain activated carbon CA2-2;
[0053] 4. Roasting: Calcining activated carbon CA2-2 at a temper...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More