A kind of carbon-based magnetic solid base catalyst and its application
A solid base catalyst and magnetic technology, applied in the direction of physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, fatty acid esterification, etc., can solve the problem of low magnetic saturation, easy agglomeration of catalysts, and particle size dispersion , Affecting the effect of biodiesel preparation and other issues, to achieve the effect of high magnetic saturation strength
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Embodiment 1
[0041] Carbon powder, ferric nitrate, urea and pure water are configured mixed solution A in the molar ratio of n (carbon): n (iron ion): n (urea): n (pure water)=61:12:30:350; The mixed liquid A was reacted at 150°C for 12h, and then filtered, washed and dried to obtain a mixed precipitate; the mixed precipitate was calcined at 700°C for 2h to obtain a carbon-based magnetic loading material; press m (carbon-based magnetic loading material) : m (sodium silicate): m (pure water) = 1:3:15 mass ratio to configure the mixed solution B; the mixed solution B was prepared into a jelly by rotary evaporation at 85°C for 10 hours; the jelly was prepared at 400 The carbon-based magnetic catalyst was obtained by calcining at ℃ for 2 hours, grinding and pulverizing, and passing through a 200-mesh sieve.
[0042] figure 1 A is the magnetic saturation intensity curve of the carbon-based magnetic loading material, and the magnetic saturation intensity is 109.38emu / g. figure 2 A is a scanni...
Embodiment 2
[0046] Repeat Example 1 to prepare and obtain the carbon-based magnetic solid base catalyst, the difference being: carbon powder, nickel nitrate, ammoniacal liquor and pure water are pressed by n (carbon): n (nickel ion): n (ammonia water): n (pure water) = 101:12:30:350 molar ratio to configure mixed solution A; react mixed solution A at 100°C for 1h, then obtain mixed precipitate by filtering, washing and drying; mix mixed precipitate at 1000°C Lower calcining 1h obtains carbon-based magnetic loading material; Press m (carbon-based magnetic loading material): m (sodium silicate): m (pure water) = 1:1:15 mass ratio configuration mixed solution B; Mixed solution B in The jelly was prepared by rotary evaporation at 85°C for 10 h; the jelly was calcined at 500°C for 2 h, ground and pulverized, and passed through a 200-mesh sieve to obtain a carbon-based magnetic catalyst.
[0047] Then press n (methanol): n (soybean oil)=9:1 molar ratio configuration mixed solution C; Press m (car...
Embodiment 3
[0049] Repeat Example 1 to prepare and obtain the carbon-based magnetic solid base catalyst, the difference being: carbon powder, cobalt nitrate, sodium hydroxide and pure water are pressed according to n (carbon): n (cobalt ion): n (sodium hydroxide) : n (pure water) = 21:12:30:350 molar ratio configuration mixed solution A; mixed solution A was reacted at 135 ℃ for 5h, then obtained mixed precipitate by filtering, washing and drying; mixed precipitate Calcined at 500°C for 5h to obtain a carbon-based magnetic loading material; configure the mixed solution B according to the mass ratio of m (carbon-based magnetic loading material): m (sodium silicate): m (pure water) = 1:5:15; Mixed solution B was prepared by rotary evaporation at 85°C for 10 hours to prepare a jelly; the jelly was calcined at 300°C for 2 hours, ground and pulverized, and passed through a 200-mesh sieve to obtain a carbon-based magnetic catalyst.
[0050] Then press n (methanol): n (soybean oil)=9:1 molar rat...
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