A kind of ordered mesoporous structure manganese cerium titanium catalyst and its preparation method and application
A titanium catalyst and mesoporous structure technology, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve the problem of less preparation process, and achieve good anti-poisoning ability, good applicability, and good catalytic activity. Effect
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Embodiment 1
[0024] Mix and dissolve 0.013 mol of P123, 0.4 mol of cerium nitrate, and 0.12 mol of manganese nitrate into 9 mol of n-butanol (BuOH) to obtain solution A, dissolve it with an ultrasonic instrument, and slowly add 6 mol of concentrated hydrochloric acid to 1 mol of titanium Acid Tetraethyl Ester Ti(OET) 4 , reacted for 15min to obtain solution B. Solution A was slowly added dropwise into solution B, mixed and reacted at 25° C. for 3 h, and stable solution C was obtained. 40 g of solution C was spread on a petri dish, and dried at 25° C. and 80% RH for 48 hours to obtain solid D. The solid D was placed in a muffle furnace, the heating rate was 0.5°C / min, and the temperature was sintered at 400°C for 3 hours to prepare a manganese-cerium-titanium catalyst with an ordered mesoporous structure. The prepared catalyst samples were subjected to TEM morphology analysis (such as figure 1 ). The prepared catalyst sample is carried out to specific surface area BET analysis (such as ...
Embodiment 2
[0027] Mix and dissolve 0.005 mol of F127, 0.5 mol of cerium acetate, and 0.2 mol of manganese acetate into 10 mol of isobutanol to obtain solution A, dissolve it with an ultrasonic instrument, take 6 mol of concentrated hydrochloric acid and slowly add dropwise to 1 mol of isopropyl titanate In the ester, react for 20min to obtain solution B. Solution A was slowly added dropwise into solution B, and mixed and reacted at 20° C. for 4 h to obtain stable solution C. 40 g of solution C was spread on a petri dish, and dried at 20° C. and 75% RH for 24 hours to obtain solid D. The solid D was placed in a muffle furnace at a heating rate of 1°C / min, and sintered at 420°C for 4 hours to prepare a manganese-cerium-titanium catalyst with an ordered mesoporous structure. The prepared catalyst samples were subjected to TEM morphology analysis (such as image 3 ). The prepared catalyst sample is carried out to specific surface area BET analysis (such as Figure 4 ).
[0028] Catalyst...
Embodiment 3
[0030] Mix and dissolve 0.073 mol of L64, 0.42 mol of cerium nitrate, and 0.28 mol of manganese chloride into 15 mol of isopropanol to obtain solution A. Dissolve it with an ultrasonic instrument, and slowly add 6 mol of concentrated hydrochloric acid dropwise to 1 mol of tetrachloride Titanium oxide (TiCl 4 ), reacted for 20 min to obtain solution B. Solution A was slowly added dropwise into solution B, and mixed and reacted at 20° C. for 4 h to obtain stable solution C. 40 g of solution C was spread on a petri dish, and dried at 25° C. and 80% RH for 36 hours to obtain solid D. The solid D was placed in a muffle furnace, the heating rate was 5°C / min, and the temperature was sintered at 600°C for 2 hours to prepare a manganese-cerium-titanium catalyst with an ordered mesoporous structure. The prepared catalyst sample was subjected to specific surface area BET analysis, and the specific surface area of the sample was 164.5m 2 g -1 , The pore distribution is mainly distri...
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