Catalyst for preparing chloromethane and ammonia gas and preparation method thereof
A catalyst, methyl chloride technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as less research, and achieve the effect of simple process, low cost and high catalytic performance
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[0019] Example 1
[0020] Using the supersaturated water absorption method, measure the unit grams γ-Al 2 O 3 The saturated water absorption capacity of the carrier is 0.6 ml. Pour 12ml of solution containing 1.2g of titanium dioxide into 20g of γ-Al 2 O 3 In the carrier, stir, immerse for 24 hours, dry at 120°C for 4 hours, and calcinate at 550°C for 6 hours to obtain TiO 2 With γ-Al 2 O 3 N-γ-Al with a carrier mass ratio of 0.06:1 2 O 3 , N is modifier.
[0021] Take N-γ-Al 2 O 3 As the carrier, using the supersaturated water absorption method to measure the unit grams of N-γ-Al 2 O 3 The saturated water absorption is 0.5ml. Pour 10ml of nickel nitrate solution containing 0.8g of nickel into 20g of N-γ-Al 2 O 3 In the middle, stirring, immersing for 24 hours, drying at 120°C for 4 hours, and calcining at 550°C for 6 hours to obtain Ni and N-γ-Al in the active component 2 O 3 For a catalyst with a mass ratio of 0.04:1, the catalyst is indicated as Cat, and the catalyst in Example...
Example Embodiment
[0032] Example 32
[0033] The catalyst immersion time affects the catalyst Cat14 as the probe catalyst. The difference from Example 14 is that the immersion time in the catalyst preparation process is 5 hours to 30 hours, and the catalyst is Cat32-Cat34.
[0034] Cat32~Cat34 were tested for activity according to the catalyst activity evaluation method, and the results are shown in Table 3.
[0035] Table 3 Catalytic activity of the catalyst prepared in Example 32
[0036]
[0037] Table 3 lists the activity test results of the catalyst prepared in Example 32, in which the immersion time exceeds 20 hours, the activity of the catalyst is basically stable, showing high activity, CH 3 The yield of Cl reaches more than 90%, and the conversion of methanol is more than 97%.
Example Embodiment
[0038] Example 33
[0039] The catalyst calcination temperature is affected, the catalyst Cat14 used is the probe catalyst. The difference from Example 14 is that the calcination temperature during the preparation of the catalyst is 400°C to 650°C, and the catalyst is denoted as Cat35 to Cat37.
[0040] Cat35~Cat37 were tested for activity according to the catalyst activity evaluation method, and the reaction results are shown in Table 4.
[0041] Table 4 Catalytic activity of the catalyst prepared in Example 33
[0042]
[0043] Table 4 lists the activity test comparison of the catalyst prepared in Example 33. When the calcination temperature is 550°C, the catalyst exhibits higher activity. 3 The yield of Cl reaches more than 90%, and the conversion of methanol is more than 97%.
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