Catalyst used for resource utilization of a fixed bed aniline distillation residue and method for preparing said catalyst
a technology of aniline distillation residue and catalyst, which is applied in the preparation of amino compounds, physical/chemical process catalysts, metal/metal-oxide/metal-hydroxide catalysts, etc., can solve the disadvantages of complicated operation of fluidized bed reactors, side reactions and deactivation of catalysts, and high heat generation (hot spot) prone to occur, and achieve good catalytic activity , high activity and stability
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example 1
[0031]16 g of nickel nitrate Ni(NO3)2.6H2O, 20 g of ferric nitrate Fe(NO3)3.9H2O and 11 g of lanthanum nitrate La(NO3)3.6H2O are weighed respectively, and dissolved in 300 ml of distilled water, referred to as solution A.
[0032]15 mass % of aqueous ammonia solution (200 ml) is formulated, referred to as solution B.
[0033]17 g of sodium silicate (Na2SiO3) is weighed and dissolved in 150 ml water, referred to as solution C.
[0034]Firstly, 100 ml water in a sedimentation tank is heated to 50° C., and the solution A, B and C are added dropwise to the sedimentation tank. In the preparation process, pH and the precipitation temperature are maintained at 7.5 and 60° C. respectively. After the end of precipitation, the stirring speed and precipitation temperature are kept unchanged, and the resulting precipitate is aged for 4 h, filtered and washed to neutral. Thereafter, the precipitate is placed in an oven of 110° C. and dried for 12 h. After the end of drying, the precipitate is calcined un...
example 2
[0036]24 g of nickel nitrate Ni(NO3)2.6H2O, 20 g of ferric nitrate Fe(NO3)3.9H2O and 7 g of yttrium nitrate Y (NO3)3.6H2O are weighed respectively, and dissolved in 300 ml of distilled water, referred to as solution A. 0.7 mol / L of Na2CO3 solution is formulated, 17 g of sodium silicate (Na2SiO3) is weighed and dissolved in 300 ml Na2CO3 solution, referred to as solution B.
[0037]Firstly, water in the sedimentation tank is heated to 70° C., and the solution A and B are added dropwise to a sedimentation tank in a parallel flow. In the preparation process, pH and the precipitation temperature are maintained at 8 and 70° C. respectively. After the end of precipitation, the stirring speed and precipitation temperature are kept unchanged, and the resulting precipitate is aged for 4 h, filtered and washed to neutral. Thereafter, the precipitate is placed in an oven of 110° C. and dried for 12 h. After the end of drying, the precipitate is calcined under air atmosphere at 500° C. for 4 h, an...
example 3
[0039]20 g of nickel nitrate Ni(NO3)2.6H2O, 8 g of cobalt nitrate Co (NO3)2.6H2O and 15 g of cerium nitrate Ce (NO3)3.6H2O are weighed respectively, and dissolved in 200 ml of distilled water, referred to as solution A.
[0040]1 mol / L of NaOH solution is formulated, 17 g of sodium silicate (Na2SiO3) is dissolved in 200 ml NaOH solution, referred to as solution B.
[0041]Firstly, the solution B is poured into a sedimentation tank and heated to 70° C., and the solution A is added dropwise to the sedimentation tank slowly. In the meantime, the precipitation temperature is maintained at 70° C. After the end of precipitation, the stirring speed and precipitation temperature are kept unchanged, and the resulting precipitate is aged for 4 h, filtered and washed to neutral. Thereafter, the precipitate is placed in an oven of 110° C. and dried for 12 h. After the end of drying, the precipitate is calcined under air atmosphere at 550° C. for 4 h, and then grinded, compression molded, pulverized a...
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